Deck 12: Applied Mathematics Review

Question 1

17)Transposition of numbers in a patient's chart is an example of which type of error?

A) Systematic
B) Random
C) Blunder
D) None of the above

Answer 1

C
Blunders during measurement are errors that occur as a result of human error in algebraic or arithmetic calculations or from improper use of a measuring device.

Question 2

18)How many significant figures are there in 0.0068?

A) Two
B) Three
C) Four
D) Five

Answer 2

A
Zeroes to the left of the first nonzero digits are not significant; these zeroes merely indicate the position of the decimal point: 0.001° C has only one significant figure; 0.012 g has two significant figures.

Question 3

9)Express log?? 100 = 2 in exponential notation.

A) 1.0 ´ 102
B) 102 = 100
C) 210 = 100
D) 10 = v100

Answer 3

B
In mathematical notation, the logarithm is written logb(N)= x, where b is the base, N is the desired product, and x is the power.In exponential notation, this is written b? = N.

Question 4

15)Express 8.333 in scientific notation.

A) 8.333 ´ 10-1
B) 8.333 ´ 101
C) 8.333 ´ 100
D) Cannot be written in scientific notation

Question 5

12)Convert 2 Gy into rad.

A) 2 rad
B) 20 rad
C) 200 rad
D) 2000 rad

Question 6

7)Solve for x in the equation x?/x? = 100.

A) -10
B) ±10
C) 10
D) 1

Question 7

10)Express log? 16 = 4 in exponential notation.

A) 4 = v16
B) 42 = 16
C) 1.6 = 102
D) 24 = 16

Question 8

16)Which of the following is not a fundamental SI unit?

A) Time
B) Distance
C) Weight
D) Electrical current

Question 9

20)The relationship between distance and radiation dose follows which of the following?

A) Direct proportionality
B) Indirect proportionality
C) Inverse proportionality
D) Linear interpolation

Question 10

6)Solve for x in the equation 4(x + 6)= 6x - 16.

A) 1.6
B) 3.2
C) 4
D) 12

Question 11

5)Solve for x in the equation x² - 1 = 0.

A) 0
B) 1
C) -1
D) ±1

Question 12

11)Convert 8.25 R into the SI unit of exposure.

A) 3.20 ´ 103 C/kg
B) 3.20 ´ 104 C/kg
C) 2.13 ´ 10-3 C/kg
D) 2.13 ´ 10-4 C/kg

Question 13

8)Find the log of log453.

A) 2.656
B) 6.116
C) -19.08
D) 8.752

Question 14

1)Simplify 5x? * x.

A) 6x4
B) 5x5
C) 5x3
D) Already simplified

Question 15

2)Simplify (a²)?.

A) a10
B) a7
C) a32
D) a25

Question 16

3)Simplify 5(3b)².

A) 15b2
B) 5(9b2)
C) 45b2
D) Already simplified

Question 17

4)Solve for x in the equation 4x - 4 = 12.

A) 6
B) ±6
C) 4
D) ±4

Question 18

19)How many significant figures are there in 6,800?

A) Two
B) Three
C) Four
D) Unable to determine

Question 19

14)Express 10³ in scientific notation.

A) 103
B) 1 ´ 103
C) 1000
D) log 1000 = 3

Question 20

13)Which of the following is an example of a random error?

A) Inaccuracies in the laser positioning system
B) Patient movement
C) Human error
D) Difference in cushioning capacity of couch materials between simulator and treatment table

Question 21

21)Which of the following numeric expressions is written in scientific notation?

A) 8.333 ´ 104
B) 83.33 ´ 103
C) 833.3 ´ 102
D) 8333 ´ 101

Question 22

22)Which of the following numeric expressions is written in scientific notation?

A) 1222 ´ 101
B) 122.2 ´ 102
C) 12.22 ´ 103
D) 1.222 ´ 104