Question

The interior angles of a triangie have measures 100° (4y + 25) ° , and (3y + 20) What is the value of y?

Answer 1

since the sum of all angles of a triangle is 180°

Explanation:

so 100°+4y+25°+3y+20=180°

145°+7y=180°

7y=180°-145°

7y=35°

y=5°