You buy 5 pairs of jeans and 10 t-shirts for 140$.your friend buys 3 pairs of jeans and 5 t-shirts for $79. write and solve a system of linear of the equation by elimination

J = jeans

T = t-shirts

You: 5j + 10t = 140

Friend: 3j + 5t = 79

To use elimination in this problem, multiply the second equation by -2 so that 10t and 5t can cancel out:

5j + 10t = 140

-6j - 10t = -158

We are left with -j = -18 or j = 18

Substitute 18 into any equation. I'll use the first equation:

5(18) + 10t = 140

90 + 10t = 140

10t = 50

t = 5

1

step-by-step explanation:

it's the only multiple of both and the least

6,250

step-by-step explanation:

to get the area, multiply 360 by 160.(57,600)

to find out how many bags of fertilizer it will take, first figure out how many square feet one bag can hold. divide 1000 by 8(125) to get the unit rate(how many square feet one pound of fertilizer can hold)and multiply it by 50(6250). if i haven't made a mistake, that is the answer.