If you would like to solve the system of linear equations, you can do this using the following steps:
2x - y = -1 ... y = 2x + 1
2x + y = -7 ... y = -7 - 2x
The correct result would be: y = 2x + 1, <span>2x + y = -7.</span>
Answer:

Step-by-step explanation:
We have
square with sides <em>s = 3cm</em>
four triangles with base <em>b = 3cm</em> and height <em>h = 9cm</em>.
The formula of an area of a square:

The formula of an area of a triangle:

Substitute:

The Surface Area:

Answer:The first one
Step-by-step explanation:
V rectangular prism = Area of the base *5
Answer: -2/3
3-(-1) over
-2-4
This equals 4/-6 which reduces to -2/3
To figure out the difference you would subtract 294 from 453.
So 453-294=159