If x - 10 = - 15, then find the value of 5x - 30

In a 3 hour examination of 320 questions, there are 40 mathematics problems. if twice as much time should be allowed for each math problem as each of the other questions, how many minutes should be spent on math problems

Billy invests £800 for 5 years in a savings account. By the end of the 5 years he has received a total of £96 simple interest. Work out the annual rate of simple interest.

Multiply the following numbers and write the answer in scientific notation: (3.45 * 107) * (6.25 * 105). A. 2.16 * 10-2 B. 2.16 * 102 C. 2.16 * 1013 D. 2.16 * 1035

Two of the angles in a triangle measures 7 and 18 what is the measure of the third angle

A manufacturer buys Bolts from A supplier the bolts cost $0.17 each but the manufacturer made a deal with the supplier and gets 4,000 bolts for $595.50 to the nearest cent how much money does a manufacturer save on 4,000 bolts with this deal

Alex and Peter win some money and share it in the ratio 3:5. Alex gets £33. How much did Peter get?

What are the steps for this equation?: 6x-5=3x+4

A waether forecast predicts a 30% chance of rain for each of the next 3 days. Describe a way to stimulate the chance that it will rain the next three days

For his birthday party, Perry mixed together 3 gallons of Jackson's fruit punch, and 2 gallons of Bonanza's fruit punch. Jackson's fruit punch contains 20% fruit juice, and Bonanza's fruit punch contains 55% fruit juice.

Your parents allow you to borrow a car to get to your part-time job, but you have to pay for a tank of gas each month. Gasoline costs $2.76/gallon and the tank takes 15 gallons.