The area of a trapezoid is calculated using the formula below, where a is the area of the trapezoid, b1 and b2 are the bases of the trapezoid, and h is the height of the trapezoid. rewrite the formula to find the base b2.

2(\frac{Area}{h} ) - b1 = b2

Step-by-step explanation:

The formula for calculating the area of a trapezoid is the following.

Area = \frac{b1+b2}{2} * h

What we are asked to find is the formula for finding b2. We can do this by rearranging the Area formula and getting b2 by itself on one side.

Area = \frac{b1+b2}{2} * h

\frac{Area}{h} = \frac{b1+b2}{2} divide h on both sides

2(\frac{Area}{h}) = b1+b2 multiply 2 on both sides

2(\frac{Area}{h} ) - b1 = b2 subtract b1 on both sides

Now we have b2 by itself on one side and the formula is rewritten to solve for b2.

step-by-step explanation:

n=9

step-by-step explanation:

7 times a number = 7n

decreased by 13 = 7n-13

same as is =

5 times the number = 5n

increased by 5 = 5n+5

7n-13 = 5n+5

2n=18

n=9