Quiz about Pre-Algebra - Chapter 1 Review - Book Pgs. 33-35

Question 1

Chapter 1.1 - Solving Simple Equations

Problem #3

Solve the equation.

$$-\frac{t}{4}=-3\pi$$

Accepted Answer

$$12\pi$$

Answer

$$-12\pi$$

Answer

$$-\frac{4}{3}\pi$$

Answer

$$\frac{4}{3}\pi$$

Question 2

Chapter 1.2 - Solving Multi-Step Equations

Problem #4

Find the value of x. Then find the angle measures of the polygon. (Select all that apply.)

Accepted Answer

$$40\degree,\ \ 105\degree,\ 35\degree$$

Accepted Answer

$$x=35$$

Answer

$$x=40$$

Answer

$$40\degree,\ \ 110\degree,\ 35\degree$$

Question 3

Chapter 1.2 - Solving Multi-Step Equations

Problem #5

Find the value of x. Then find the angle measures of the polygon. (Select all that apply.)

Accepted Answer

$$x=120$$

Accepted Answer

$$60\degree,\ \ 120\degree,\ 120\degree,\ 60\degree$$

Answer

$$60\degree,\ \ 120\degree,\ 125\degree,\ 120\degree$$

Answer

$$x=60$$

Question 4

Chapter 1.2 - Solving Multi-Step Equations

Problem #6

Find the value of x. Then find the angle measures of the polygon. (Select all that apply.)

Accepted Answer

$$90\degree,\ \ 135\degree,\ 90\degree,\ 135\degree,\ 90\degree$$

Accepted Answer

$$x=135$$

Answer

$$x=120$$

Answer

$$90\degree,\ \ 135\degree,\ 125\degree,\ 90\degree,\ 70\degree$$

Question 5

Chapter 1.3 - Solving Equations with Variables on Both Sides

Problem #10

Solve the equation.

$$7t+3=8+7t$$

Accepted Answer

no solution

Answer

infinitely many solutions

Question 6

Chapter 1.3 - Solving Equations with Variables on Both Sides

Problem #11

Solve the equation.

$$\frac{1}{5}\left(15b-7\right)=3b-9$$

Accepted Answer

no solution

Answer

infinitely many solutions

Question 7

Chapter 1.3 - Solving Equations with Variables on Both Sides

Problem #12

Solve the equation.

$$\frac{1}{6}\left(12z-18\right)=2z-3$$

Accepted Answer

infinitely many solutions

Answer

no solution

Question 8

Chapter 1.4 - Rewriting Equations and Formulas

Problem #13

Solve the equation for y.

$$6y-x=8$$

Accepted Answer

$$y=-\frac{1}{6}x+\frac{4}{3}$$

Answer

$$y=\frac{1}{6}x+\frac{4}{3}$$

Answer

$$y=-\frac{1}{6}x-\frac{4}{3}$$

Answer

$$y=\frac{1}{6}x-\frac{4}{3}$$

Question 9

Chapter 1.4 - Rewriting Equations and Formulas

Problem #14

Solve the equation for y.

$$10x-5y=15$$

Accepted Answer

$$y=2x-3$$

Answer

$$y=2x+3$$

Answer

$$y=-2x-3$$

Answer

$$y=-2x+3$$

Question 10

Chapter 1.4 - Rewriting Equations and Formulas

Problem #15

Solve the equation for y.

$$20=5x+10y$$

Accepted Answer

$$y=-\frac{1}{2}x+2$$

Answer

$$y=\frac{1}{2}x+2$$

Answer

$$y=\frac{1}{2}x-2$$

Answer

$$y=-\frac{1}{2}x-2$$

Question 11

Problem #16. a.

Chapter 1.4 - Rewriting Equations and Formulas

a. The formula $$F=\frac{9}{5}\left(K-273.15\right)+32$$ converts a temperature from Kelvin K to Fahrenheit F. Solve the formula for K.

Accepted Answer

$$K=\frac{5}{9}\left(F-32\right)+273.15$$

Answer

$$K=\frac{5}{9}\left(F-32\right)-273.15$$

Answer

$$K=\frac{5}{9}\left(F+32\right)+273.15$$

Answer

$$K=-\frac{5}{9}\left(F-32\right)+273.15$$

Question 12

Problem #17. a.

a. Select the formula for the area A of a trapezoid.

Accepted Answer

$$A=\frac{1}{2}h\left(b+B\right)$$

Answer

$$A=\frac{1}{2}\left(b+B\right)$$

Answer

$$A=\frac{1}{2}h\left(b-B\right)$$

Answer

$$A=\frac{1}{2}hb$$

Question 13

Problem #17. b.

b. Solve the formula for h.

$$A=\frac{1}{2}h\left(b+B\right)$$

Accepted Answer

$$h=\frac{2A}{b+B}$$

Answer

$$h=\frac{-2A}{b+B}$$

Answer

$$h=\frac{-2A}{b-B}$$

Answer

$$h=\frac{2A}{b-B}$$

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