We know that :
⊕ Sum of the interior angles in a Pentagon should be equal to 540°
⇒ x° + (2x)° + (2x)° + 90° + 90° = 540°
⇒ (5x)° = 540° - 180°
⇒ (5x)° = 360°
⇒ x° = 72°
Peter says if you subtract 13 from my number and multiply the difference by -6, the result is -42. What is Peters's number?
2 answers:
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