Answer:18.4
Step-by-step explanation:
First what we gonna do is solve for y.
x+5y=28 Subtract 5y both sides.
-5y -5y
x=-5y+28 Then you have to replace x with the equation.
2(-5y+28)+3y=21 Multiply.
-10y+56+3y=21 Combine like terms and subtract 56 both sides.
-56 -56
-7y=-35 Divide -7 both sides.
y=5 Simplify.
x=-5(5)+28 Multiply and add.
x=-25+28
x=3
Heres your answer x=3 and y=5.
Answer:
<em>start with y</em>
y
<em>add 7</em>
y+7
<em>multiply by 3</em>
3(y+7)
<em>subtract 6</em>
3(y+7)-6
<u>therefore the answer is:</u>
3y + 21 - 6
=
3y + 15 or 3(y+5)
It is most likely 14 units so it would be A. I think.
Volume is length x width x height. It measures how much space it can hold inside of a shape.
