3 years ago

Find y if the distance between

Mathematics

1 answer:

Helen [10]3 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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