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Kitty [74]
3 years ago
12

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

Mathematics
2 answers:
ser-zykov [4K]3 years ago
6 0

Answer:

x=35²

Step-by-step 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. <u>(91, 92, -8, -5 and 125) (3x and 4x)</u>

295+7x=540

3. subtract 295 from 540:

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

4. Divide 245 by 7.

\frac{7x}{7}=\frac{245}{7}\\\\x=35

Final answer:

<u>x = 35</u>

Hope this helps Doonan!

dangina [55]3 years ago
3 0

Answer:

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

Step-by-step explanation:

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