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Sergio039 [100]
3 years ago
8

13 R S 12 What's the length of QR? A) 1 B) 17.7 C) 6.7 OD) 5

Mathematics
1 answer:
ANEK [815]3 years ago
8 0

Answer:

5

Step-by-step explanation:

This is a right triangle, so we can use the Pythagorean theorem

a^2+b^2 = c^2

where a and b are the legs and c is the hypotenuse

QR^2 + 12^2 = 13^2

QR^2 +144 =169

QR^2 = 169-144

QR^2 =25

Take the square root of each side

QR = sqrt(25)

QR =5

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