a well-designed boiler evaporates 8.5 pounds of water per pound of coal burned. find how many pounds of coal would be necessary to evaporate 68 pounds of water.

The population in a city in 2005 was 18000. by 2010, the city's population had grown to45000. ecomomists have determined that the population growth follows an exponential mode. if they are correct what is the projected population for 2015

How to factor the function: f (x) = 2x^3+14x^2+24x

The commission Gary earns is proportional to the cost of the shoes he sells. Gary earns 15% in commission for every $150 worth of shoes he sells.

Later 7 students joined group 2 (41 students) and one student left to join group 1. (44 students) Now 20 students play trombone and 7 more students play trumpet as play saxophone. How many students play each instrument?

Vanson has a bunch of boxes that are all the same. He stacked 4 boxes, measured the stack, and found that it was 3 feet high ...

The shoe store is having a sale. All items are 30% off the regular price, and the store will pay 1/2 of the sales tax. Sales tax is 8%. How much would you pay for pair of shoes, if the regular price is $50.00?

If there are four boys and two girls in a family what is the ratio of boys in the family to children in the family

What is the quotient of 40,561 divided by 47 (in steps)

Is the lcm of a pair of numbers ever equal to one of the numbers? explain with an example

What is the best measurement unit for an elephant? ...