Find s20 for the series - 1 + - 3 + - 5 + - 7 + ...

A combination lock for a bicycle has four dials, each with the numbers from 1 to 6. If you have forgotten the combination that opens the lock, how long will it take you to try all the combinations, at a rate of one every 5 seconds

How does a cube root differ from finding a square root of a positive integer

Grandpa Mick opened a pint of ice cream. He gave his youngest grandchild 1/5 of the ice cream and his middle grand child 1/4 of the remaining ice cream. Then, the oldest grandchild 1/3 of the ice cream that was left after serving the others.

4 (2y-1) - 2 (2y) = 6 y=?

A sum of money is divided in ratio 3:5:9. Calculate the smallest share given that the largest share is $558

Complete the steps to factor the tens 30 x 40

Mr. Kessler bought 12 packs of toilet paper ... that's where it all went ... he spent a total of $78. If you are using the equation method to find the unit rate, which would be the independent quantity, the "x" value (the one that you want to be a

The width and length of a rectangle are consecutive integers. if the perimeter of the rectangle is 374 inches, find the width and length of the rectangle.

Which of the following describes the correct process for solving the equation 3x+6=21

Speed of Plane A = 415 mph. Speed of Plane B = 375 mph. Both planes leave from New York City at the same time. Plane A flies due North. Plane B flies due South. After 4 hours, how far is Plane A from Plane B (to the nearest mile) ?