3 years ago

50 POINTS!

1 answer:

7 0

2x+y=20 and -5y=6x+12 are your equations.

You can turn 2x+y=20 into y=-2x+20

Substitute this value of y into the other equation.
-5(-2x+20)=-6x+12
10x-100=-6x+12
16x=112
x=7

Substitute this value of x into the other equation.
2(7)+y=20
y=6

Your answer is x=7 and y=6.

You might be interested in

3x-4y=28 find slope intercept form

Helen [10]

First you have to subtract 3x and then divide everything by -4 to get y=3/4x-7

6 0

3 years ago

Mark wants to paint a mural. He has 1 1/8 gallons of yellow paint, 1 1/9 gallons of green paint, and 7/8 gallon of blue paint. M

Sauron [17]

Here is the set up:

(3/4)[(11/8) + (11/9) + (7/8)]

Do the math to find your answer.

3 0