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Number 5 am stuck pls help

Number 5 am stuck pls help-example-1

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Answer is a good number for you to come you have the money to go out and get it back in your the house to the call and I’ll tell him I wanna was the time of that time you
User Sirs
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Answer:

30

Explanation:

Exterior angle property: Exterior angle equals sum of interior opposite angles.

5x + 30 + 3x + 40 = 7x + 80

5x + 3x + 30 + 40 = 7x + 80

8x + 70 = 7x + 80

Subtract 70 from both sides

8x = 7x + 80 - 70

8x = 7x + 10

Subtract 7x from both sides

8x - 7x = 10

x = 10

7x + 80 = 7*10 + 80 = 70 + 80 = 150

7x +80 +∠ ACB = 180 {linear pair}

150 + ∠ACB = 180

∠ACB = 180 - 150 = 30

User Peshmerge
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