Question

can someone help me?? i will give them a medal!

Answer 1

For the following system, if you isolated x in the second equation to use the Substitution Method, what expression would you substitute into the first equation?

3x + y = 8
-x - 2y = -10

A) -2y + 10

B) 2y + 10

3) 2y - 10

4) -2y - 10

Answer 2

@mathstudent55

Answer 3

@Nikkeyiboo

Answer 4

can u help me nikki?

Answer 5

@Nikkeyiboo

Answer 6

LETS SEE. :)

Answer 7

For the following system, if you isolated x in the second equation to use the Substitution Method, what expression would you substitute into the first equation?

3x + y = 8
-x - 2y = -10

A) -2y + 10

B) 2y + 10

3) 2y - 10

4) -2y - 10

Answer 8

For the first one,
y=−3x+8

Answer 9

i did i think it would be B

Answer 10

@Nikkeyiboo

Answer 11

I think so too. :)

Answer 12

thank you can u help me with like 4 more? :)

Answer 13

@Nikkeyiboo

Answer 14

is B right for the first one @mathstudent55

Answer 15

The problem ask to isolate x in the second equation.

Let's start with the second equation:
-x - 2y = -10

First, add 2y to both sides:

-x = 2y - 10

Now multiply both sides by -1:

x = -2y + 10

Now compare -2y + 10 with the choices.

Answer 16

its gonna be x = 2 + 10

Answer 17

@mathstudent55

Answer 18

cause 2 times -1 is 2 and 10 tie 1 is 10

Answer 19

i mean -2 time -1 is postive 1

Answer 20

hello?
@mathstudent55

Answer 21

I have no idea what you are doing.

I already gave you the answer.
x = -2y + 10
Now compare -2y + 10 with the 4 choices.
One choice is exactly that.
Choose that one.
Hint: It's not choices B, C, or D.

Answer 22

ohh okay thank you! @mathstudent55

Answer 23

can u pease help me with like 6 more please??

Answer 24

I have a better idea.
Go over this problem as many times as it takes for you to understand it.
Then you'll be able to solve similar problems by yourself.

Answer 25

Could I have a medal?

Answer 26

That's not cool. I wasted my time trying to help and nothing.