Question

Find the sum of the interior angles, then solve for x.

Help!!

Answer 1

x=35²

Explanation:

1. Since all pentagons have a total interior angle sum of 540, add all the terms together and set them equal to 540:

`91+92+125+\left(4x-8\right)+\left(3x-5\right)=540`

2. combine like terms. (91, 92, -8, -5 and 125) (3x and 4x)

`295+7x=540`

3. subtract 295 from 540:

`7x=540-295\\7x=245`

4. Divide 245 by 7.

`(7x)/(7)=(245)/(7)\\\\x=35`

Final answer:

x = 35

Hope this helps Doonan!

Answer 2

91 + 125 + 92 +(3x-5) + (4x- 8)= 540

308 +3x -5 +4x -8 =540

7x - 295 = 540

7x = 540 -295

7x = 245

x = 245/7

x = 35

Explanation: