8853student 8853student

11-01-2021
Mathematics

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the two angles measuring (30 + 2 a)degree and (125 -a) degree supplementary to each other, then find the value of a.

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Adetunmbiadekunle Adetunmbiadekunle

16-01-2021

Answer:

The value of a is 25

Step-by-step explanation:

When two angles are supplementary, they add up to 180 degrees

Mathematically,

(30 + 2a) + (125-a) = 180

30 + 2a + 125 - a = 180

a + 155 = 180

a = 180-155

a = 25 degrees

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