تكلم مع الذكاء الاصطناعي
Deck 7: Rational Expressions and Equations
ملء الشاشة (f)
سؤال
A 
matrix that has no inverse is called singular.
matrix that has no inverse is called singular.
سؤال
If 
and 
are 
matrices then 
.
and are matrices then . سؤال
سؤال
Solve the system of linear equations. Round to the nearest hundredth. 
A) No solution
B)
C)
D)
E)
A) No solution
B)
C)
D)
E)
سؤال
The solution to the system 
is 
. (Rounded to the nearest hundredth).
is . (Rounded to the nearest hundredth). سؤال
سؤال
Solve the system of linear equations. 
A)
B)
C)
D) No solution.
E)
A)
B)
C)
D) No solution.
E)
سؤال
To find the inverse of a 
matrix we can multiply the matrix by the 
identity matrix.
matrix we can multiply the matrix by the identity matrix. سؤال
Solve the system of linear equations. 
A)
B)
C)
D) Not enough information
E)
A)
B)
C)
D) Not enough information
E)
سؤال
Solve the system of linear equations. 
A)
B)
C)
D) No Solution
E)
A)
B)
C)
D) No Solution
E)
سؤال
سؤال
سؤال
A 
matrix 
is invertible if there exists a 
matrix 
such that 
where 
also has dimension 
.
matrix is invertible if there exists a matrix such that where also has dimension . سؤال
سؤال
سؤال
If matrix 
has dimension 
and matrix 
has dimension 
the dimension of 
will be 
.
has dimension and matrix has dimension the dimension of will be . سؤال
Use the graph to find the solution(s) of a system of equations with two unknowns. 
A)
B) Infinitely many solutions
C)
D)
E) No solution
A)
B) Infinitely many solutions
C)
D)
E) No solution
سؤال
The graph below shows a system of equations. How many solutions exist for this system? 
A) 3
B) 0
C) 4
D) 2
E) 1
A) 3
B) 0
C) 4
D) 2
E) 1
سؤال
سؤال
سؤال
A chemistry class takes a survey of the number of hours they studied for an exam and the exam score. Of the students who studied less than two hours 8 students got a score below 60 3 students got a score between 60 and 80 and 1 above 80. Of the students who studied two to four hours 3 students got a score below 60 5 between 60 and 80 and 5 above 80. Of the students who studied more than four hours 2 student got a score below 60 1 between 60 and 80 and 4 above 80. Which of the following matrices organizes this data with the columns representing the number of hours students studied and the rows representing the exam score.
A)
B)
C)
D)
E)
A)
B)
C)
D)
E)
سؤال
Which one of the following is the augmented matrix for the following system of equations. 
A)
B)
C)
D)
E)
A)
B)
C)
D)
E)
سؤال
Which one of the following is the augmented matrix in row-echelon form for the system below? 
A)
B)
C)
D)
E)
A)
B)
C)
D)
E)
سؤال
A college conducted a survey of students satisfaction with three academic courses: mathematics English and science. The results are tabulated in the data matrix below. How many students rate math as average or above? 
A) 9
B) 8
C) 3
D) 11
E) 20
A) 9
B) 8
C) 3
D) 11
E) 20
سؤال
Which one of the following is the augmented matrix in row-echelon form for the system below? 
A)
B)
C)
D)
E)
A)
B)
C)
D)
E)
سؤال
Solve the system of linear equations. 
A)
B)
C)
D) No solution
E)
A)
B)
C)
D) No solution
E)
سؤال
A college conducted a survey of students satisfaction with three academic courses: mathematics English and science. The results are tabulated in the data matrix below. How many students gave a fair rating for these courses? 
A) 16
B) 18
C) 14
D) 6
E) 22
A) 16
B) 18
C) 14
D) 6
E) 22
سؤال
A college conducted a survey of students satisfaction with three academic courses: mathematics English and science. The results are tabulated in the data matrix below. How many surveys were completed? 
A) 9
B) 48
C) 18
D) 10
E) 20
A) 9
B) 48
C) 18
D) 10
E) 20
سؤال
Solve the system of linear equations. 
A)
B) No solution
C) Infinitely many solutions
D)
E)
A)
B) No solution
C) Infinitely many solutions
D)
E)
سؤال
Which one of the following is the augmented matrix in row-echelon form for the system below? 
A)
B)
C)
D)
E)
A)
B)
C)
D)
E)
سؤال
Solve the system of linear equations. 
A)
B)
C) No solution
D)
E)
A)
B)
C) No solution
D)
E)
سؤال
The augmented matrix of a system of linear equations is given below in reduced row-echelon form. What is the solution to this system? 
A)
B)
C)
D)
E)
A)
B)
C)
D)
E)
سؤال
سؤال
Solve the system of linear equations. 
A) No solution
B) Infinitely many solutions
C)
D)
E)
A) No solution
B) Infinitely many solutions
C)
D)
E)
سؤال
Which one of the following is the dimension of the given matrix? 
A)
B)
C)
D)
E)
A)
B)
C)
D)
E)
سؤال
Find the solution of the system of linear equations described by the following matrix: 
A) No solution
B)
C)
D)
E)
A) No solution
B)
C)
D)
E)
سؤال
Find the 
-entry of the following matrix. 
A) 7
B) 4
C) -1
D) 8
E) -7
-entry of the following matrix. A) 7
B) 4
C) -1
D) 8
E) -7
سؤال
Find the solution of the system of linear equations described by the following matrix. Round to nearest hundredth. 
A)
B) No solution
C)
D) Infinitely many solutions
E)
A)
B) No solution
C)
D) Infinitely many solutions
E)
سؤال
Find the solution of the system of linear equations described by the following matrix. Round to the nearest hundredth. 
A)
B)
C) No solution
D)
E) Infinitely many solutions
A)
B)
C) No solution
D)
E) Infinitely many solutions
سؤال
Find the solution of the system of linear equations described by the following matrix: 
A) No solution
B) Infinitely many solutions
C)
D)
E)
A) No solution
B) Infinitely many solutions
C)
D)
E)
سؤال
Perform the matrix operation as indicated. 
A)
B)
C) Not possible
D)
E)
A)
B)
C) Not possible
D)
E)
سؤال
A college conducted a survey of students satisfaction with three academic courses: mathematics English and science. The results are tabulated in the data matrix below. Find the scalar product 
. 
A)
B)
C) None of the above
D)
E)
. A)
B)
C) None of the above
D)
E)
سؤال
A college conducted a survey of students satisfaction with three academic courses: mathematics English and science. The results are tabulated in the data matrix below. What does the 
-entry represent? 
A) The number of students who rated all 3 courses as excellent.
B) The number of students who rated math as an average course.
C) The number of students who rated English as an excellent course.
D) The number of students who completed the survey.
E) The number of students who rated science as a fair course.
-entry represent? A) The number of students who rated all 3 courses as excellent.
B) The number of students who rated math as an average course.
C) The number of students who rated English as an excellent course.
D) The number of students who completed the survey.
E) The number of students who rated science as a fair course.
سؤال
Which one of the following is the 
identity matrix?
A)
B)
C)
D)
E)
identity matrix?A)
B)
C)
D)
E)
سؤال
Perform the matrix operation as indicated. 
A)
B)
C)
D) Not possible
E)
A)
B)
C)
D) Not possible
E)
سؤال
Perform the matrix operation as indicated. 
A)
B)
C)
D)
E) None of the above
A)
B)
C)
D)
E) None of the above
سؤال
Perform the matrix operation as indicated. 
A)
B) Not possible
C)
D)
E)
A)
B) Not possible
C)
D)
E)
سؤال
A college conducted a survey of students satisfaction with three academic courses: mathematics English and science. The results are tabulated in the data matrix below. Of the students who were surveyed regarding math what proportion rated math as excellent? 
A) 7
B) 0.41
C) 2.57
D) 0.39
E) 18
A) 7
B) 0.41
C) 2.57
D) 0.39
E) 18
سؤال
If 
and 
are matrices then 
when...
A)
is the inverse matrix of 
.
B)
is an identity matrix.
C)
and 
are 
matrices.
D)
and 
are identical matrices.
E)
and 
have the same dimension.
and are matrices then when...A)
is the inverse matrix of .B)
is an identity matrix.C)
and are matrices.D)
and are identical matrices.E)
and have the same dimension. سؤال
Perform the matrix operation as indicated. 
A)
B) None of the above
C)
D)
E)
A)
B) None of the above
C)
D)
E)
سؤال
Perform the matrix operation as indicated. 
A)
B) Not possible
C)
D)
E)
A)
B) Not possible
C)
D)
E)
سؤال
A family sold jewelry during an art festival over a weekend. They sold bracelets earrings and necklaces created by 3 different family members. The matrices 
and 
tabulate the number of each piece of jewelry sold on Saturday and Sunday. The matrix 
gives the price per piece of jewelry (in dollars) for each type sold. Find 
. 
A)
B)
C)
D) Not possible
E)
and tabulate the number of each piece of jewelry sold on Saturday and Sunday. The matrix gives the price per piece of jewelry (in dollars) for each type sold. Find . A)
B)
C)
D) Not possible
E)
سؤال
Perform the matrix operation as indicated. 
A)
B)
C)
D)
E)
A)
B)
C)
D)
E)
سؤال
Perform the matrix operation as indicated. 
A)
B)
C)
D)
E) None of the above
A)
B)
C)
D)
E) None of the above
سؤال
Perform the matrix operation as indicated. 
A)
B)
C)
D)
E) Not possible
A)
B)
C)
D)
E) Not possible
سؤال
Perform the matrix operation as indicated. 
A) Not possible
B)
C)
D)
E)
A) Not possible
B)
C)
D)
E)
سؤال
Perform the matrix operation as indicated. 
A)
B) Not possible
C)
D)
E)
A)
B) Not possible
C)
D)
E)
سؤال
Perform the matrix operation as indicated. 
A)
B) Not possible
C)
D)
E)
A)
B) Not possible
C)
D)
E)
سؤال
Perform the matrix operation as indicated. 
A)
B)
C) Not possible
D)
E)
A)
B)
C) Not possible
D)
E)
سؤال
Perform the matrix operation as indicated. 
A)
B) Not possible
C)
D)
E)
A)
B) Not possible
C)
D)
E)
سؤال
Which one of the following is the variable matrix for the following systems of equations? 
A)
B)
C)
D)
E)
A)
B)
C)
D)
E)
سؤال
Write the system of equations that corresponds to the following augmented matrix: 
A)
B)
C)
D)
E)
A)
B)
C)
D)
E)
سؤال
Find the solution to the given matrix by solving the matrix equation 
. 
A) Infinitely many solutions
B) No solution
C)
D)
E)
. A) Infinitely many solutions
B) No solution
C)
D)
E)
سؤال
Two matrices can be subtracted if they have the same...
A) dimension.
B) entries on the first row.
C) number of rows.
D) number of columns.
E)
entry.
A) dimension.
B) entries on the first row.
C) number of rows.
D) number of columns.
E)
entry. سؤال
The state of New York s spending per person can be approximated by using the equation 
where s is the spending per person in dollars t years since 2000. Use the equation to find the spending per person to the nearest cent in 2009.
A) $5885.34
B) $5885.33
C) $232805.22
where s is the spending per person in dollars t years since 2000. Use the equation to find the spending per person to the nearest cent in 2009.A) $5885.34
B) $5885.33
C) $232805.22
سؤال
Find the inverse matrix of 
.
A) Not invertible
B)
C)
D)
E)
.A) Not invertible
B)
C)
D)
E)
سؤال
Evaluate the rational expression for the given value. 
for 
A) 2
B) 2.5
C)
D) undefined
for A) 2
B) 2.5
C)
D) undefined
سؤال
Your co-worker is getting married. The bride and groom charter a bus to bring the wedding guests to the lake site of the ceremony. The cost per person taking the bus is 
where c is dollars per person and n is the number of people. Find the cost per person to the nearest cent if 42 people will ride the bus.
A) $12.00
B) $16.41
C) $16.40
where c is dollars per person and n is the number of people. Find the cost per person to the nearest cent if 42 people will ride the bus.A) $12.00
B) $16.41
C) $16.40
سؤال
Find the values of the variable that must be excluded for the rational expression. 
A)
B)
C)
D)
A)
B)
C)
D)
سؤال
Evaluate the rational expression for the given value. 
for 
A) 0.23
B)
C)
D) undefined
for A) 0.23
B)
C)
D) undefined
سؤال
Your co-worker is getting married. A group of you agree to buy a gift together for $125. If n people share the cost of the gift the cost per person c is 
where c is in dollars per person. Find the cost per person if 5 people share the cost.
A) $125
B) $25
C) $5
where c is in dollars per person. Find the cost per person if 5 people share the cost.A) $125
B) $25
C) $5
سؤال
Find the values of the variable that must be excluded for the rational expression. 
A)
B)
C)
D)
A)
B)
C)
D)
سؤال
Which one of the following is the constant matrix for the following systems of equations? 
A)
B)
C)
D)
E)
A)
B)
C)
D)
E)
سؤال
Which one of the following is the coefficient matrix for the given system of equations? 
A)
B)
C)
D)
E)
A)
B)
C)
D)
E)
سؤال
Find the inverse matrix of 
.
A) Not invertible
B)
C)
D)
E)
.A) Not invertible
B)
C)
D)
E)
سؤال
Your co-worker is getting married. A group of you agree to pay for a luncheon for the bride. Both the bride and groom are invited to the luncheon but neither of them pays the cost of the meal. The cost per person paying for the luncheon is 
where c is dollars per person and n is the number of paying people. Find the cost per person if 12 people share the cost.
A) $21
B) $20
C) $18
where c is dollars per person and n is the number of paying people. Find the cost per person if 12 people share the cost.A) $21
B) $20
C) $18
سؤال
Find the inverse matrix of 
.
A)
B)
C) Not invertible
D)
E)
.A)
B)
C) Not invertible
D)
E)
سؤال
Evaluate the rational expression for the given value. 
for 
A) 0.25
B) 2.5
C)
D) undefined
for A) 0.25
B) 2.5
C)
D) undefined
سؤال
Find the inverse matrix of 
.
A)
B)
C) Not invertible
D)
E)
.A)
B)
C) Not invertible
D)
E)
سؤال
Find the solution to the given matrix by solving the matrix equation 
. 
A)
B)
C) No solution
D)
E)
. A)
B)
C) No solution
D)
E)
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العب
ملء الشاشة (f)
Deck 7: Rational Expressions and Equations
1
A matrix that has no inverse is called singular.
matrix that has no inverse is called singular.True
2
If and are matrices then .
and are matrices then .False
3
If the graph of a system of equations results in two parallel lines then there is/are 2 solution(s) to the system.
False
4
Solve the system of linear equations. Round to the nearest hundredth.
A) No solution
B)
C)
D)
E)
A) No solution
B)
C)
D)
E)
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5
The solution to the system is . (Rounded to the nearest hundredth).
is . (Rounded to the nearest hundredth). فتح الحزمة
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6
If a system of linear equations of 3 unknowns has infinitely many solutions then the graph of each equation is identical.
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7
Solve the system of linear equations.
A)
B)
C)
D) No solution.
E)
A)
B)
C)
D) No solution.
E)
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8
To find the inverse of a matrix we can multiply the matrix by the identity matrix.
matrix we can multiply the matrix by the identity matrix. فتح الحزمة
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9
Solve the system of linear equations.
A)
B)
C)
D) Not enough information
E)
A)
B)
C)
D) Not enough information
E)
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10
Solve the system of linear equations.
A)
B)
C)
D) No Solution
E)
A)
B)
C)
D) No Solution
E)
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11
The cost of a movie ticket at a local theater is $6.50 per child under 12 years old and $11.75 per adult. On a given day 3000 people purchased a movie ticket and the ticket costs collected totaled $26000. How many children and how many adults purchased a movie ticket that day? (Rounded to the nearest whole number.)
A) 507 children and 2493 adults
B) 1762 children and 1238 adults
C) 1500 children and 1500 adults
D) 5667 children and 8667 adults
E) 1951 children and 4951 adults
A) 507 children and 2493 adults
B) 1762 children and 1238 adults
C) 1500 children and 1500 adults
D) 5667 children and 8667 adults
E) 1951 children and 4951 adults
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12
When subtracting 2 matrices the dimensions of all matrices must be the same.
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13
A matrix is invertible if there exists a matrix such that where also has dimension .
matrix is invertible if there exists a matrix such that where also has dimension . فتح الحزمة
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14
When multiplying 3 matrices the dimensions of all matrices must be the same.
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15
The following statement is an example of numerical data: "26 dogs at a given adoption center tabulated by breeds (Terriers Hounds Retrievers)."
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16
If matrix has dimension and matrix has dimension the dimension of will be .
has dimension and matrix has dimension the dimension of will be . فتح الحزمة
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17
Use the graph to find the solution(s) of a system of equations with two unknowns.
A)
B) Infinitely many solutions
C)
D)
E) No solution
A)
B) Infinitely many solutions
C)
D)
E) No solution
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18
The graph below shows a system of equations. How many solutions exist for this system?
A) 3
B) 0
C) 4
D) 2
E) 1
A) 3
B) 0
C) 4
D) 2
E) 1
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19
A solution to a system of equations with 3 unknowns is the point of intersection of 2 lines.
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20
A chemist mixes two solutions one containing 8% alcohol and another containing 25% alcohol. How many milliliters of each solution should be mixed to obtain 3 mL of a solution that contains 16% alcohol? Round to the nearest hundredth.
A) 7.24 mL of solution with 8% alcohol and 4.24 mL of solution with 25% alcohol.
B) 0.82 mL of solution with 8% alcohol and 2.18 mL of solution with 25% alcohol.
C) 3.73 mL of solution with 8% alcohol and 2.18 mL of solution with 25% alcohol.
D) 1.59 mL of solution with 8% alcohol and 4.59 mL of solution with 25% alcohol.
E) 1.59 mL of solution with 8% alcohol and 1.41 mL of solution with 25% alcohol.
A) 7.24 mL of solution with 8% alcohol and 4.24 mL of solution with 25% alcohol.
B) 0.82 mL of solution with 8% alcohol and 2.18 mL of solution with 25% alcohol.
C) 3.73 mL of solution with 8% alcohol and 2.18 mL of solution with 25% alcohol.
D) 1.59 mL of solution with 8% alcohol and 4.59 mL of solution with 25% alcohol.
E) 1.59 mL of solution with 8% alcohol and 1.41 mL of solution with 25% alcohol.
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21
A chemistry class takes a survey of the number of hours they studied for an exam and the exam score. Of the students who studied less than two hours 8 students got a score below 60 3 students got a score between 60 and 80 and 1 above 80. Of the students who studied two to four hours 3 students got a score below 60 5 between 60 and 80 and 5 above 80. Of the students who studied more than four hours 2 student got a score below 60 1 between 60 and 80 and 4 above 80. Which of the following matrices organizes this data with the columns representing the number of hours students studied and the rows representing the exam score.
A)
B)
C)
D)
E)
A)
B)
C)
D)
E)
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22
Which one of the following is the augmented matrix for the following system of equations.
A)
B)
C)
D)
E)
A)
B)
C)
D)
E)
فتح الحزمة
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فتح الحزمة
k this deck
23
Which one of the following is the augmented matrix in row-echelon form for the system below?
A)
B)
C)
D)
E)
A)
B)
C)
D)
E)
فتح الحزمة
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24
A college conducted a survey of students satisfaction with three academic courses: mathematics English and science. The results are tabulated in the data matrix below. How many students rate math as average or above?
A) 9
B) 8
C) 3
D) 11
E) 20
A) 9
B) 8
C) 3
D) 11
E) 20
فتح الحزمة
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k this deck
25
Which one of the following is the augmented matrix in row-echelon form for the system below?
A)
B)
C)
D)
E)
A)
B)
C)
D)
E)
فتح الحزمة
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k this deck
26
Solve the system of linear equations.
A)
B)
C)
D) No solution
E)
A)
B)
C)
D) No solution
E)
فتح الحزمة
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27
A college conducted a survey of students satisfaction with three academic courses: mathematics English and science. The results are tabulated in the data matrix below. How many students gave a fair rating for these courses?
A) 16
B) 18
C) 14
D) 6
E) 22
A) 16
B) 18
C) 14
D) 6
E) 22
فتح الحزمة
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28
A college conducted a survey of students satisfaction with three academic courses: mathematics English and science. The results are tabulated in the data matrix below. How many surveys were completed?
A) 9
B) 48
C) 18
D) 10
E) 20
A) 9
B) 48
C) 18
D) 10
E) 20
فتح الحزمة
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k this deck
29
Solve the system of linear equations.
A)
B) No solution
C) Infinitely many solutions
D)
E)
A)
B) No solution
C) Infinitely many solutions
D)
E)
فتح الحزمة
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k this deck
30
Which one of the following is the augmented matrix in row-echelon form for the system below?
A)
B)
C)
D)
E)
A)
B)
C)
D)
E)
فتح الحزمة
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k this deck
31
Solve the system of linear equations.
A)
B)
C) No solution
D)
E)
A)
B)
C) No solution
D)
E)
فتح الحزمة
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k this deck
32
The augmented matrix of a system of linear equations is given below in reduced row-echelon form. What is the solution to this system?
A)
B)
C)
D)
E)
A)
B)
C)
D)
E)
فتح الحزمة
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33
An investor has $45000 to invest in three types of accounts. Account A pays 4% annually Account B pays 6% and Account C pays 8%. The investor wishes to have a total return of $3000 on the investment with equal amounts invested in Account B and Account C. How much should be invested in each type of account to satisfy the investor's wishes? Round to the nearest hundredth.
A) Account A = $15000 Account B = $15000 Account C = $15000
B) Account A = $25000 Account B = $1000 Account C = $10000
C) Account A = $5000 Account B = $20000 Account C = $20000
D) There are infinitely many solutions
E) No solution
A) Account A = $15000 Account B = $15000 Account C = $15000
B) Account A = $25000 Account B = $1000 Account C = $10000
C) Account A = $5000 Account B = $20000 Account C = $20000
D) There are infinitely many solutions
E) No solution
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34
Solve the system of linear equations.
A) No solution
B) Infinitely many solutions
C)
D)
E)
A) No solution
B) Infinitely many solutions
C)
D)
E)
فتح الحزمة
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35
Which one of the following is the dimension of the given matrix?
A)
B)
C)
D)
E)
A)
B)
C)
D)
E)
فتح الحزمة
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36
Find the solution of the system of linear equations described by the following matrix:
A) No solution
B)
C)
D)
E)
A) No solution
B)
C)
D)
E)
فتح الحزمة
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37
Find the -entry of the following matrix.
A) 7
B) 4
C) -1
D) 8
E) -7
-entry of the following matrix. A) 7
B) 4
C) -1
D) 8
E) -7
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38
Find the solution of the system of linear equations described by the following matrix. Round to nearest hundredth.
A)
B) No solution
C)
D) Infinitely many solutions
E)
A)
B) No solution
C)
D) Infinitely many solutions
E)
فتح الحزمة
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39
Find the solution of the system of linear equations described by the following matrix. Round to the nearest hundredth.
A)
B)
C) No solution
D)
E) Infinitely many solutions
A)
B)
C) No solution
D)
E) Infinitely many solutions
فتح الحزمة
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40
Find the solution of the system of linear equations described by the following matrix:
A) No solution
B) Infinitely many solutions
C)
D)
E)
A) No solution
B) Infinitely many solutions
C)
D)
E)
فتح الحزمة
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41
Perform the matrix operation as indicated.
A)
B)
C) Not possible
D)
E)
A)
B)
C) Not possible
D)
E)
فتح الحزمة
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42
A college conducted a survey of students satisfaction with three academic courses: mathematics English and science. The results are tabulated in the data matrix below. Find the scalar product .
A)
B)
C) None of the above
D)
E)
. A)
B)
C) None of the above
D)
E)
فتح الحزمة
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43
A college conducted a survey of students satisfaction with three academic courses: mathematics English and science. The results are tabulated in the data matrix below. What does the -entry represent?
A) The number of students who rated all 3 courses as excellent.
B) The number of students who rated math as an average course.
C) The number of students who rated English as an excellent course.
D) The number of students who completed the survey.
E) The number of students who rated science as a fair course.
-entry represent? A) The number of students who rated all 3 courses as excellent.
B) The number of students who rated math as an average course.
C) The number of students who rated English as an excellent course.
D) The number of students who completed the survey.
E) The number of students who rated science as a fair course.
فتح الحزمة
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44
Which one of the following is the identity matrix?
A)
B)
C)
D)
E)
identity matrix?A)
B)
C)
D)
E)
فتح الحزمة
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45
Perform the matrix operation as indicated.
A)
B)
C)
D) Not possible
E)
A)
B)
C)
D) Not possible
E)
فتح الحزمة
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46
Perform the matrix operation as indicated.
A)
B)
C)
D)
E) None of the above
A)
B)
C)
D)
E) None of the above
فتح الحزمة
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47
Perform the matrix operation as indicated.
A)
B) Not possible
C)
D)
E)
A)
B) Not possible
C)
D)
E)
فتح الحزمة
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48
A college conducted a survey of students satisfaction with three academic courses: mathematics English and science. The results are tabulated in the data matrix below. Of the students who were surveyed regarding math what proportion rated math as excellent?
A) 7
B) 0.41
C) 2.57
D) 0.39
E) 18
A) 7
B) 0.41
C) 2.57
D) 0.39
E) 18
فتح الحزمة
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49
If and are matrices then when...
A) is the inverse matrix of .
B) is an identity matrix.
C) and are matrices.
D) and are identical matrices.
E) and have the same dimension.
and are matrices then when...A)
is the inverse matrix of .B)
is an identity matrix.C)
and are matrices.D)
and are identical matrices.E)
and have the same dimension. فتح الحزمة
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50
Perform the matrix operation as indicated.
A)
B) None of the above
C)
D)
E)
A)
B) None of the above
C)
D)
E)
فتح الحزمة
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51
Perform the matrix operation as indicated.
A)
B) Not possible
C)
D)
E)
A)
B) Not possible
C)
D)
E)
فتح الحزمة
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52
A family sold jewelry during an art festival over a weekend. They sold bracelets earrings and necklaces created by 3 different family members. The matrices and tabulate the number of each piece of jewelry sold on Saturday and Sunday. The matrix gives the price per piece of jewelry (in dollars) for each type sold. Find .
A)
B)
C)
D) Not possible
E)
and tabulate the number of each piece of jewelry sold on Saturday and Sunday. The matrix gives the price per piece of jewelry (in dollars) for each type sold. Find . A)
B)
C)
D) Not possible
E)
فتح الحزمة
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53
Perform the matrix operation as indicated.
A)
B)
C)
D)
E)
A)
B)
C)
D)
E)
فتح الحزمة
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54
Perform the matrix operation as indicated.
A)
B)
C)
D)
E) None of the above
A)
B)
C)
D)
E) None of the above
فتح الحزمة
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55
Perform the matrix operation as indicated.
A)
B)
C)
D)
E) Not possible
A)
B)
C)
D)
E) Not possible
فتح الحزمة
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56
Perform the matrix operation as indicated.
A) Not possible
B)
C)
D)
E)
A) Not possible
B)
C)
D)
E)
فتح الحزمة
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57
Perform the matrix operation as indicated.
A)
B) Not possible
C)
D)
E)
A)
B) Not possible
C)
D)
E)
فتح الحزمة
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58
Perform the matrix operation as indicated.
A)
B) Not possible
C)
D)
E)
A)
B) Not possible
C)
D)
E)
فتح الحزمة
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59
Perform the matrix operation as indicated.
A)
B)
C) Not possible
D)
E)
A)
B)
C) Not possible
D)
E)
فتح الحزمة
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60
Perform the matrix operation as indicated.
A)
B) Not possible
C)
D)
E)
A)
B) Not possible
C)
D)
E)
فتح الحزمة
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61
Which one of the following is the variable matrix for the following systems of equations?
A)
B)
C)
D)
E)
A)
B)
C)
D)
E)
فتح الحزمة
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62
Write the system of equations that corresponds to the following augmented matrix:
A)
B)
C)
D)
E)
A)
B)
C)
D)
E)
فتح الحزمة
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63
Find the solution to the given matrix by solving the matrix equation .
A) Infinitely many solutions
B) No solution
C)
D)
E)
. A) Infinitely many solutions
B) No solution
C)
D)
E)
فتح الحزمة
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64
Two matrices can be subtracted if they have the same...
A) dimension.
B) entries on the first row.
C) number of rows.
D) number of columns.
E) entry.
A) dimension.
B) entries on the first row.
C) number of rows.
D) number of columns.
E)
entry. فتح الحزمة
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65
The state of New York s spending per person can be approximated by using the equation where s is the spending per person in dollars t years since 2000. Use the equation to find the spending per person to the nearest cent in 2009.
A) $5885.34
B) $5885.33
C) $232805.22
where s is the spending per person in dollars t years since 2000. Use the equation to find the spending per person to the nearest cent in 2009.A) $5885.34
B) $5885.33
C) $232805.22
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66
Find the inverse matrix of .
A) Not invertible
B)
C)
D)
E)
.A) Not invertible
B)
C)
D)
E)
فتح الحزمة
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67
Evaluate the rational expression for the given value. for
A) 2
B) 2.5
C)
D) undefined
for A) 2
B) 2.5
C)
D) undefined
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68
Your co-worker is getting married. The bride and groom charter a bus to bring the wedding guests to the lake site of the ceremony. The cost per person taking the bus is where c is dollars per person and n is the number of people. Find the cost per person to the nearest cent if 42 people will ride the bus.
A) $12.00
B) $16.41
C) $16.40
where c is dollars per person and n is the number of people. Find the cost per person to the nearest cent if 42 people will ride the bus.A) $12.00
B) $16.41
C) $16.40
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69
Find the values of the variable that must be excluded for the rational expression.
A)
B)
C)
D)
A)
B)
C)
D)
فتح الحزمة
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70
Evaluate the rational expression for the given value. for
A) 0.23
B)
C)
D) undefined
for A) 0.23
B)
C)
D) undefined
فتح الحزمة
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71
Your co-worker is getting married. A group of you agree to buy a gift together for $125. If n people share the cost of the gift the cost per person c is where c is in dollars per person. Find the cost per person if 5 people share the cost.
A) $125
B) $25
C) $5
where c is in dollars per person. Find the cost per person if 5 people share the cost.A) $125
B) $25
C) $5
فتح الحزمة
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72
Find the values of the variable that must be excluded for the rational expression.
A)
B)
C)
D)
A)
B)
C)
D)
فتح الحزمة
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73
Which one of the following is the constant matrix for the following systems of equations?
A)
B)
C)
D)
E)
A)
B)
C)
D)
E)
فتح الحزمة
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74
Which one of the following is the coefficient matrix for the given system of equations?
A)
B)
C)
D)
E)
A)
B)
C)
D)
E)
فتح الحزمة
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75
Find the inverse matrix of .
A) Not invertible
B)
C)
D)
E)
.A) Not invertible
B)
C)
D)
E)
فتح الحزمة
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76
Your co-worker is getting married. A group of you agree to pay for a luncheon for the bride. Both the bride and groom are invited to the luncheon but neither of them pays the cost of the meal. The cost per person paying for the luncheon is where c is dollars per person and n is the number of paying people. Find the cost per person if 12 people share the cost.
A) $21
B) $20
C) $18
where c is dollars per person and n is the number of paying people. Find the cost per person if 12 people share the cost.A) $21
B) $20
C) $18
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77
Find the inverse matrix of .
A)
B)
C) Not invertible
D)
E)
.A)
B)
C) Not invertible
D)
E)
فتح الحزمة
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78
Evaluate the rational expression for the given value. for
A) 0.25
B) 2.5
C)
D) undefined
for A) 0.25
B) 2.5
C)
D) undefined
فتح الحزمة
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79
Find the inverse matrix of .
A)
B)
C) Not invertible
D)
E)
.A)
B)
C) Not invertible
D)
E)
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افتح القفل للوصول البطاقات البالغ عددها 271 في هذه المجموعة.
فتح الحزمة
k this deck
80
Find the solution to the given matrix by solving the matrix equation .
A)
B)
C) No solution
D)
E)
. A)
B)
C) No solution
D)
E)
فتح الحزمة
افتح القفل للوصول البطاقات البالغ عددها 271 في هذه المجموعة.
فتح الحزمة
k this deck
فتح الحزمة
افتح القفل للوصول البطاقات البالغ عددها 271 في هذه المجموعة.
