Answer:
x+3
Step-by-step explanation:
Area of a rectangle is
.
We know the width, W, is
and we know the area is
.
Inputting this in our formula above we get:

L is a an expression such that when you multiply it to
gives you
.
is a difference of squares and can be factored using:
.
.
So L=x-3 and W=x+3.
Answer: 3 in.
Step-by-step explanation:
Given
The base of the triangle is 
The area of the triangle is 
Solve mixed fraction
Base is

Area is

The area of the triangle is given by

Insert the values to get the height

Answer:
the answer is the second one. im not sure but try :)
Step-by-step explanation:
The answer to this is 1600