3 years ago

-x+2y=9 -7x-2y=-1 Solve each system by elimination

1 answer:

5 0

X - 2y = - 9
7x + 2y = 1

x - 2y = - 9
(+)
7x + 2y = 1
___________
8x = - 8

x = - 1

- 1 - 2y = - 9
2y = 8
y = 4

i am a mathematics teacher. if anything to ask please pm me

You might be interested in

Your school is putting on a prom fashion show, and you are in charge of building a platform to serve as a stage. Main stage is a

rodikova [14]

The answer would be tewlce

7 0

3 years ago

Jon thinks of a number between 1 and 10.The cube of the number is equal to the square of double the number.What is number jon is

siniylev [52]

Answer:

Step-by-step explanation:

4^2=8 8^2=64

4^3=64

6 0

3 years ago

Read 2 more answers

Which equation would you use to solve the following situation?

Igoryamba

Answer:p=7

Step-by-step explanation:because 4 x 7 =28

4 0

3 years ago

F(x)=x+3 ;find f (x+1)

nataly862011 [7]

Answer:

x+4

Step-by-step explanation:

(x+1)+3

8 0

3 years ago

Evaluate the expression 2(8 − 4)2 − 10 ÷ 2.

Darina [25.2K]

2(8-4)2-10/2, 8 - 4 is 4 so then times that by 2 and you'll get 8 then multiply that by 2 to get 16, after that you need to subtract it by ten which is 6 then divide it by 2 to get 3.

Hope this helped

6 0

3 years ago