Question

HELP ASAP:

What is the measure of angle A in the triangle?

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Answer 1

Answer: 50 degrees.

Step-by-step explanation:

(2x - 10) + (x + 30) + 70 = 180...combine like terms

3x + 90 = 180

3x = 180 - 90

3x = 90

x = 90/3

x = 30

m < A = 2x - 10 = 2(30) - 10 = 60 - 10 = 50

Answer 2

30

Explanation:

The sum of all the angles in a triangle is always, always, 180 degrees.

Just add the angles, then solve for x.

(2x - 10) + (x + 30) + 70 = 180

3x + 20 + 70 = 180

3x + 90 = 180

3x = 90

x = 30