Question

(a-30)°and (2a)° are the
measures of two supplemen-
tary angles. find the measure
of each angles​

Answer 1

Answer:

40, 140

Step-by-step explanation:

a-30 + 2a = 180

3a=210

a=70

2a= 140

a-30= 40

Answer 2

Answer:-

40° and 140°

Step-by-step explanation:

a-30° and 2a° are two supplementary angles.

As we know that the sum of two supplementary anges is equal to 180*

Therefore, a-30° + 2a° = 180°

a-30 + 2a = 180

3a - 30 = 180

3a = 180 + 30

3a = 210

a = 210 ÷ 3

a = 70

→ 1st angle (a-30) = 70 - 30 = 40°

→ 2nd angle (2a) = 2 x 70 = 140°