What is the distance from point N to CM in the figure below? N 8.1 7.8 L 0 O A. 0.8 O B. 3.11 O C. 8.4 O D. 7.8 O E. 2.18 O F. 8.1

A

Step-by-step explanation:

answer:

p(-11, 11)

step-by-step explanation:

first plug in all the points into the midpoint formula, which is, (x, y) = (x1 + x2/2, y1 + y2/2). but since the midpoint is already given, you plug in those coordinates into the (x, y).

(-5, 7) = (1 + x2/2, 3 + y2/2)

then split it up with the variables.

-5 = 1 + x/2

7 = 3 + y/2

let's solve for x first. so first you would multiply both sides by 2 and it cancels out on one of the sides, and the other, you get -5 × 2, which is -10.

-10 = 1 + x

then subtract 1 from both sides, and you get -11 as your x. now moving onto the y values, multiply both sides by 2 and it cancels out on one side and on the other you get, 7 × 2. that would be 14.

14 = 3 + y

then subtract both sides by 3 and you should get 11 as your y.