96.4k views
4 votes
Can someone answer this please l

Can someone answer this please l-example-1

2 Answers

4 votes
180=5a+18+48-a+8a-30
144=12a
a=12
The middle angle= 36 degree
Give me brilliant
User Datka
by
6.3k points
3 votes

Answer:

Explanation:

(5a + 18) + (48 - a) + (8a - 30) = 180 (Angles on a straight line)

5a + 18 + 48 - a + 8a - 30 = 180

12a + 36 = 180

12a = 180 - 36

a = 144/12

a = 12

therefore, the first angle is, 78 degree, second angle is 36 degree and third angle is 66 degree.

Therefore, the size of the smallest angle is 36 degree

User Tarun Umath
by
6.8k points
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