3x - y = 7
y= 2x +2
What’s the answer

y=20,x=9

When doing problems like this it is important to always note: whatever you do to one side of the = sign you have to do to the other side.

Step-by-step explanation:

For this problem it helps that they already give you what y equals to so you can plug y in the top equation to figure out what x is. See attachment for step by step process

news channels,news papers,and the internet

answer: .64

step-by-step explanation

set up the formula for standard deviation for this set of numbers, then simplify