Question

Solve the following system of equations. 9x + 5y = -154 4x + y = -22

Answer 1

the system is

9x + 5y = -154
4x + y = -22

right?

Answer 2

or no?

Answer 3

type here @jazzykaila33

Answer 4

where it says "type your reply"

Answer 5

okay sorry

Answer 6

Joanna went school supply shopping. She spent $27.72 on notebooks and pencils. Notebooks cost $1.96 each and pencils cost $1.14 each. She bought a total of 20 notebooks and pencils. How many of each did she buy?
4 notebooks; 16 pencils
6 notebooks; 14 pencils
9 notebooks; 11 pencils
11 notebooks; 9 pencils

Answer 7

that's fine, but what about the first one?

Answer 8

the question got deleted so I cant pull it back up, sorry for the difficulties

Answer 9

oh, I see, that's fine

Answer 10

let

n = # of notebooks
p = # of pencils

Answer 11

"She bought a total of 20 notebooks and pencils."

so which equation can we form?

Answer 12

sorry the site glitched

Answer 13

I'm back

Answer 14

let

n = # of notebooks
p = # of pencils

"She bought a total of 20 notebooks and pencils."

so which equation can we form?

Answer 15

see here @jazzykaila33

Answer 16

got it!

Answer 17

ready

Answer 18

not so sure but i think its standard form we can use Ax+by=c

Answer 19

we have n notebooks and p pencils

we have a total of 20 notebooks and pencils

so what can we do with n and p to get 20?

Answer 20

add?

Answer 21

yes, add n and p to get 20

n+p = 20

Answer 22

which variable do you want to isolate?

n? or p?

Answer 23

um. lets do n

Answer 24

ok so we have n+p = 20

to isolate n, we need to move that p over

Answer 25

how do we do this?

Answer 26

make the numbers x out by subtracting its opposite?

Answer 27

well just subtracting

Answer 28

yes