3 years ago

If c=48y+.99n what is y?

2 answers:

8 0

I think you have to subtract 99-48 and then you divided by 2, and then you get 25.5 as your answer. Correct me if I’m wrong, but I believe that’s the answer :)

il63 [147K]3 years ago

6 0

Y can be anything because the answer can be anything too! And if you have the subject name pls tell me maybe it’s something else so that I can help

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What are the coordinates of the triangle after a dilation with a scale factor of 2? Center it at (2, 2) .

Elodia [21]

Dilation of a point P(x,y) with scale factor s centred at (p,q) is given by
P'=(p+s*(x-p),q+s*(x-q))

Substituting
s=2, p=2,q=2
P'=(2+2*(x-2),2+2*(y-2))

P P'
(2,4) (2+2(2-2), 2+2*(4-2)) = (2, 6)
(0,6) (2+2(0-2), 2+2*(6-2)) = (-2, 10)
(-3,3) (2+2(-3-2), 2+2*(3-2)) = (-8, 4)