3 years ago

Please help, I don’t understand how to get this please explain. Ill give brianliest.

Mathematics

2 answers:

Ulleksa [173]3 years ago

7 0

Answer:

D 22.5CM

Step-by-step explanation:

Slav-nsk [51]3 years ago

7 0

Answer: B

Step-by-step explanation: Just take a look at the big triangle and the little triangle, and then look at that side of the triangle you are looking for on the little one and use common sense to find the answer.

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Hi,

Step-by-step explanation:

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PR=11.9350...

PQ²=QR²+PR²-2*QR*PR*cos(R)

cos(R)=(12²+142.444...-15²)/(2*12*11.9350...)=0,21451112....

angle R=77,61315...°≈77.6°

angle P=180°-51°-77.6°≈51,4°

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