The area of a trapezoid is given by the formula a=1/2(b1+b2)h where b1 is parallel to base b2 and h is the height solve the formula for b2

For the rule of 78, for a 12-month period, the last term in the sequence is 12 and the series sums to 78. for an 10 month period, the last term is and the series sum is . for a 15 month period, the last term is and the series sum is . for a 20 month period, the last term is and the series sum is

The u-drive rent-a-truck company plans to spend $13 million on 320 new vehicles. each commercial van will cost $25 comma 000, each small truck $50 comma 000, and each large truck  $80 comma 000. past experience shows that they need twice as many vans as small trucks. how many of each type of vehicle can they buy?

Apackage of five erasers cost 0. $.39 at this rate how many how much would 60 erasers cost in dollars and cents