Question

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Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Answer:

7.the ratio is 4:5

4x,5x

4x+5x=180

9x=180

x=180/9

x=20

the angles are:4x=4×20=80

5x=5×20=100

8.a)the ratio is 1:4

1x,4x

1x+4x=180

5x=180

x=180/5

x= 36

the angles are :1x=1×36=36

4x=4×36=144

b)the ratio is 19:11

19x,11x

19x+11x=90

30x=90

x=90/30

x=3

the angles are:19x=19×3=57

11x=11×3=33

hope it helps you...

Thankyou......