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Varvara68 [4.7K]
2 years ago
14

PLZ HELP ITS DUR RIGHT NOW AND PLZ ANSWER TRUTHFULLY

Mathematics
1 answer:
yuradex [85]2 years ago
5 0

Answer:

x=141

Step-by-step explanation:

(n-2)•180 = Sum of all the interior angles

n = # of sides

(7-2)•180

5•180

900= Sum of all the interior angles

Add all the angles and equal them to 900

125+122+131+x+7+x+107+x-15=900

Add all the numbers up first on the left side

477+3x=900

3x=423

x=141

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Step-by-step explanation:

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