Question

Use the given angle measures to answer the following questions.

m∠A = 40°
m∠B = 5x°
Part A: If Angle A and Angle B are vertical angles, what is value of x?

A. 8
B. 10
C. 28
D. 35

Answer 1

8

Explanation:

40÷5=8

Answer 2

`\Huge\boxed{A.8}`

Explanation:

Hello There!

If you didn't know vertical angles are congruent

That being said we can use this equation to solve for x

40 = 5x

Objective: Isolate the variable using inverse operations

To get rid of the 5 we divide each side by 5

40 / 5= 8

5x/5=x

we're left with x=8

To check our answer we can plug in 8 to x and if it equal 40 then the answer is correct

5(8) = 40

So the answer would be 8