3 years ago

PLEASE HELP ME! :) A) A B) B C) C D) D

Mathematics

1 answer:

zheka24 [161]3 years ago

4 0

Pretty sure it's C ~~~~~~~~~~~~~~

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Free_Kalibri [48]

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10. The coordinates of C and D are 4 and -28 respectively, and F mdpt CD. Solve for:

Zigmanuir [339]

Answer:

a) mCD=7

b) mCF=7

c) mFD=7

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Step-by-step explanation:

Let the coordinates of C and D be (4,0) and (0,-28) respectively and F is the midpoint of CD

a) mCD

Slope formula

$m= \frac{y_2-y_1}{x_2-x_1}$

$m= \frac{-28-0}{0-4}$

$m= \frac{-28}{-4}$

$m= 7$

mCD=7

b) mCF

mCF=mCD

Hence mCF=7

c) mFD

mFD=mCD

Hence mFD=7

d) Coordinates of F : mid point formula

Mid points Formula

$x= \frac{x_2+x_1}{2}$

$x= \frac{0+4}{2}=\frac{0+4}{2}=2$

$y= \frac{y_2+y_1}{2}=\frac{-28+0}{2}=\frac{-28}{2}=-14$

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