Answer:
im thinkin its 29
Step-by-step explanation:
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.
Assume the second number is x, then the other two are x - 2, x + 2
So x-2 + x + x + 2 = 51
-> 3x = 51
-> x = 17
56, you are dividing by -2 each time
