Deck 29: Expressions and Equations

Question 1

The expression 4 x + 4 represents the length of the shortest side of a triangle . The longest side is 1.5 times the length of the shortest side. What is the length of the longest side in terms of x?

Answer 1

6 x + 6

Question 2

Solve the equation 56 = z - 13.8 for the variable z .

Answer 2

69.8

Question 3

The sides of a regular heptagon are equal. If the length of each side is expressed as 4.2 H + 2, what is the perimeter of the heptagon in terms of H .

Answer 3

29.4 H + 14

Question 4

The circumference of the circular base of a cylinder is 52.8 inches. What is the diameter to the nearest thousandth of an inch? Use 3.1416 as the value of pi.

Question 5

A certain screw has 14 threads. This is 1/8 as many threads as there are on a second screw. If S represents the number of threads on the second screw, what is the value of S?

Question 6

Equations are used to solve problems where one or more quantities are not known.

Question 7

Evaluate the expression 2D - 7, where D = 11.

Question 8

Symbols make it possible to develop mathematical formulas and equations.

Question 9

A rectangular prism is 21 3/32 inches wide. The length (L) is 23 11/16 inches longer than its width. What is the value of L in inches?

Question 10

Evaluate the expression 5(2 a + b ) + 3, when a = 1; b = 5.