1/30 = 4/x (we put x because we don't know what number goes there) SO 1 x X = x= 4x 30+ 120 so, x=120 in.

Now we do the same to the other one.

1/30 = 3/x

1 x x = x= 3x 30 = 90 so, x=90 in.

Wait, we are not done yet. It also says to find the area of the room in sq ft.

We need to convert these numbers into feet. So divide 12 by the numbers.

90/ 12 = 7.5 120/12 = 10 Now, we can multiply to get the square feet.

inverse operation of addition

$113.42

i hope that is right.

step-by-step explanation:

answer: it actually depends on which is the independent variable and which is the dependent variable. let us say we're looking at a linear equation. y=2x+3. we theoretically could switch the equation to be x=(y-3)/2 and it would be the same line. so either a causes b or it can be that b causes a. so technically the answer is false

step-by-step explanation: