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Sergio039 [100]
2 years ago
15

Find y if the distance between

Mathematics
1 answer:
Helen [10]2 years ago
5 0

Answer:

y = 6

Step-by-step explanation:

\sqrt{(10-3)^2 + (y+18)^2} = 25 \\ 49 + y^2 + 324 + 36y = 625 \\

y^2 + 36y - 252 = 0

(y-6)(y+42) = 0

y = 6 (accettable)

y = -42 (not accettable)

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