Joanna has 45 postcards in her postcard collection, which is 180% of the number of postcards Kyle has. How many postcards does kyle have?

Which expression is equal to 15x - 6

What is the length of the radius of a circle whose area is 100 pie (3.14) ?

A customer is owed $30.00. how many different combinations of bills, using only five, ten, and twenty dollar bills, are possible to give the customer his or her change

Given: x - 5 > - 10. Choose the solution set.

Write 75 as the sum of powers of 8, using rational exponents. 8^? x 8^? x 8^? x 8^? = 75

5. Andre is solving the equation 4 (x + 3) = 7. He says, "I can subtract from each side to get 4x = 1 and then divide by 4 to get x = " Kiran says, "I think you made a mistake." a. How can Kiran know for sure that Andre's solution is incorrect? b.

On three examinations, Dana received scores of 84, 89, and 78. What score does Dana need on the fourth examination to raise his average to 85?

You have a Spanish meeting every forth day and a math club meeting every tenth day. Today you have both meetings. In how many days will you have both meetings on the same day again?

5.2 turned into a fraction in simplest form.

A certain laptop is really popular and sells for $199.99. Since sales are so good, the store raises the price by 13%. What is the cost of the laptop after the markup?