M is the midpoint of jk, jm = 7x − 32 and mk = 89 − 4x.  if m is the midpoint of jk, what is the distance of mk?

a 45

b 11

c 13

d90

Being the midpoint, both JM and MK would be the same.

Set the two equations to equal each other and dolve for x:

7x-32 = 89-4x

Add 32 to both sides:

7x = 121-4x

Add 4x to both sides:

11x = 121

Divide both sides by 11:

x = 121 /11

x = 11

Now you have a value for x, solve for MK:

MK = 89-4(11) = 89-44 = 45

The answer is A. 45

90% rotation

step-by-step explanation:

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