math

Use the Ziegarnik Effect to find the perfect breaking point for your math homework.

Hello everyone. I am stuck on a work question that we are required to solve using the matrix (or Gauss-Jordan) method. "A car rental company wants to buy 100 new cars. Compact cars cost $12,000 each, intermediate size cars cost $18,000 each, full size cars cost $24,000 each, and the company...

The Sum of three times a number and 18 is -39. Find the number. I was always confused with these problems and never understood them. Any help would be much appreciated!! Thank you!

An oil tank contains 220.2 gallons of oil. Whenever the amount of oil drops below 90 gallons, an alarm sounds. If 145.3 gallons are pumped into a delivery truck, how many gallons must be pumped back into the tank in order to shut off the alarm? I'm doing a remedial math course and I need help...