Me with the question quick. will give first person brainliest.

Remark

In this section, it's a very good idea to make yourself a formula page. Every time you answer a question, write down the formula you used. Usually the sample questions will do that for you. Follow them carefully.

Key word: midpoint.

Formula

x1 = -6

x2 = 3

y1 = 1

y2 = - 2

Solve

midpoint = (- 6 + 3)/2 , (1 - 2)/2

midpoint = - 3/2, -1/2

D

Problem 7

Remark

I'm going to do no more than outline the answer. The formula is the same.

0,0 does not affect the outcome at all.

x1 = 4

y1 = 6

x2 = 0

y2 = 0

Midpoint = (4 + 0)/2, (6 + 0)/2

Midpoint = 4/2, 6/2

Midpoint = (2,3)

B

just sum

10 + 10 = 20

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,