There are 18 students in me. alvarezs art class. Throughout the year every student must pair up with every other student to complete a project. How many projects will be finished?

Aria has $2.70 worth of dimes and quarters. She has twice as many dimes as quarters. Determine the number of dimes and the number of quarters that Aria has.

What is 6^2/3 in radical form

Some reports claim that the Dunkin' Donuts chain sells 950 million donuts in five months. At this rate, how many donuts would The chain of shops so in one year?

What is the difference in the areas of a circle with radius 14 ft and a circle wit radius 10 ft? round your answer to the nearest square meter. a) 75 ft^2 b) 160 ft^2 c) 302 ft^2 d) 537 ft^2

Subtract (4x^2 + x + 8) - (2x^2 + 3x - 1)

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?