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WILL MARK BRAINLIEST ANSWER!!!

7. The perimeter of the triangle is 145 inches. Find the length AC.

8. The perimeter of the triangle is 135 meters. Find the length AC.

9. The perimeter of the triangle is 122 feet. Find the length AB.

WILL MARK BRAINLIEST ANSWER 7 The perimeter of the triangle is 145 inches Find the length AC 8 The perimeter of the triangle is 135 meters Find the length AC 9 class=

Respuesta :

nightangelrose06

Answer:

7. D:61

8. A:57

9. A: 47

Step-by-step explanation:

Quesiton 7:

To find perimeter we add all the sides together.

x+2x+2x+5=145

Combine all the x's.

5x+5=145

To isolate the constants, subtract 5 from both sides.

5x=140

Now divide both sides by 5 to isolate the x.

x=28

The questions asks for the length of AC, so to find that we need to insert our new x.

AC= 2(28)+5

56+5=61

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