3 years ago

PLEASE NEED HELP....I NEED TO FINISH IN ABOUT AN HOUR....PLEASE

Mathematics

1 answer:

s344n2d4d5 [400]3 years ago

8 0

Answer: ∠R = 137°

<u>Step-by-step explanation:</u>

The opposite angles of a quadrilateral are supplementary (equal to 180°).

Since ∠P and ∠R are opposite angles, their sum is 180°

∠P + ∠R = 180°

y + 3y + 8 = 180

4y + 8 = 180

4y = 172

y = 43

∠R = 3y + 8

= 3(43) + 8

= 129 + 8

= 137

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