grianbuster grianbuster

08-11-2020
Mathematics

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help on this question

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Respuesta :

Аноним Аноним

08-11-2020

Answer:

y = 3

Step-by-step explanation:

PQ(5 - 12;-10 + 2) => PQ(-7;-8)

RS(8; y - 10)

because PQ⊥RS

=> (-7).8 - 8(y - 10) = 0

<=> y - 10 = -7

<=> y = 3

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