Solve using substitution y=3x-4 2x+y=10

x=2.8

y=4.4

Step-by-step explanation:

First, you would put what y equals into the second equation in replacement of y 2x+(3x-4)=10

You would then add 4 to the side with 10 because you're canceling out the -4. 2x+3x=10+4

Then combine on both sides. 5x=14

And then divide 14 by 5 and you get 2.8

You would then put 2.8 in replacement of x and figure out the y (use any equation you'd like)

The easiest equation in this situation would be y=3x-4 so then you plug 2.8 in for x.

3(2.8)-4 and solve to get y.

You can check your answer by plugging x and y into an equation.

2(2.8)+4.4= 10

46.2+112.3

step-by-step explanation:

#15. square

step-by-step explanation:

because quadrilatural (idk how to spell it) means somthing that is not 3d or like, equal sides (or somthing like that   you know what i meanz)

hope this halps!

bai!