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larisa86 [58]
3 years ago
7

identify an equation in point slope form for the line perpendicular to the y=-1/2x+11 that passes through (4,-8). a. y+8=1/2(x-4

) b. y-4=2(x+8) c. y-8=1/2(x+4) d. y+8=2(x-4)
Mathematics
1 answer:
Solnce55 [7]3 years ago
3 0

Answer:

d. y+8=2(x-4)

Step-by-step explanation:

There are 2 important parts to this question. First, understanding which slopes are perpendicular. The negative reciprocal of a number will be perpendicular to it. So, since the original slope is -1/2 the new slope should be 2.

Then, remember what the point-slope formula is. The point-slope formula is: y-y_{2}=m(x-x_{2}). So if you plug in the point and slope the new equation looks like, y--8=2(x-4). Then, simplify for the final answer of y+8=2(x-4).

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The given expression is

\rm \dfrac{2}{x^2-36} - \dfrac{1}{x^2 +6x} = \dfrac{2}{(x+6)(x-6)}-\dfrac{1}{x(x+a)}\\\\= \dfrac{bx}{x(x+6)(x-6)}-\dfrac{x-c}{(x+6)(x+6)x}\\\\= \dfrac{dx-x+e}{x(x+6)(x-6)}\\\\= \dfrac{x+f}{x(x+6)(x-6)}\\\\= \dfrac{g}{x(x-6)}

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2 years ago
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4 0
3 years ago
Which ratios form a proportion.?<br> A)3/15,12/55<br> B)8/24,12/35<br> C)5/18,25/90<br> D)4/11,16/25
Yuliya22 [10]
Answer is C!

Ok I got to organize the info...
3/15 and 12/55
3*2...
Aha
3*4 equals 12 but not 15...
A: No

B:
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No

GAUTIE
Sorry...
It's C
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5*5=25
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Hope that helps you!
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