Answer:
Step-by-step explanation:
Find c if ∠PQR = 90°?
I will ASSUME you mean point P is at (3. c)
slope of PQ is (2 - c) / (9 - 3) = (2 - c) / 6
slope of QR is (11 - 2) / (3c - 9) = 9 / (3c - 9)
perpendicular lines have negative reciprocal slopes.
(2 - c) / 6 = -1(3c - 9)/9
9(2 - c) = -6(3c - 9)
18 - 9c = -18c + 54
9c = 36
c = 4
Answer:
v= 3
Step-by-step explanation:
-19 + v = -8 ( v - 1 )
multiply -8(v - 1)= -8v + 8
-8v + 8v and then add the v with the +8v
Subtract -19 +19 and add the +19 with the +8= 27
27 divided by 9= 3
Answer:
Step-by-step explanation:
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