Answer:
x=64
y=40
Step-by-step explanation:
2x+x-12=180
3x=192
x=64
3y+y+20=180
4y=160
y=40
As the slope of parallel lines are equL therefore slope of required line is -1/6
These problems are called literal equations(just so you know)
S=L-rL
First, you subtract L from both sides:
S-L=-rL
The commutative property of multiplication states that you can change the order of 2 different numbers being multiplied together and still keep the equation/expression equivalent to the first. We can change r and L around like this:
S-L=-Lr
now we divide both sides by -L:

We can still simplify this, though, by splitting up the fraction on the left:

which is equal to:

for the final step, the double negative becomes a positive:

there is the final simplified answer for r
The area formula for a rectangle = Length x Width
Let length = L and width = W.
We also know that the length is 3 yards longer than twice it's width.
SO this means L = 3 PLUS 2 times W
L = 3 + 2W
Now plug that into the area formula and we get:
Area = (3 + 2W) x W
You'll need to multiply everything in the brackets by W.
So what would (3 + 2W)x W = ?