cristabean87 cristabean87

08-11-2021
Mathematics

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A and B are vertical angles with mA= x and mB= 4x - 30.
What is mA?
Enter your answer in the box.

A and B are vertical angles with mA x and mB 4x 30 What is mA Enter your answer in the box class=

Respuesta :

sqdancefan sqdancefan

08-11-2021

9514 1404 393

Answer:

10°

Step-by-step explanation:

Vertical angles have the same measure, so ...

∠A = ∠B

x = 4x -30

30 = 3x . . . . . . . add 30-x to both sides

10 = x = ∠A . . . . divide by 3

The measure of ∠A is 10°.

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