The perfect squares, 1,4,9,16,25, ..., are closed under what? A: additionB: multiplicationC: square-rootingD: none of these

Lisa paid $2.58 in sale tax on an Ohio state Buckeyes sweatshirt. The total cost was $45.57. egat was the price of the sweatshirt before taxes

Simplify the expression cos (pi-2x)

Too download movies off the internet you must pay $1.99 per movie but over time fee of $5.50. Write an expression to show the total cost

Which number is equivalent to - (-2) ?

The radius of a water molecule is about 1.4 angstroms. One angstrom is 0.00000001 cm. What is the diameter of a water molecule in centimeters?

Two Neighbors in a rural area want to know the distance between their homes in miles. What should the Neighbors use as a conversion factor to covert 4,224 to miles

A rectangle is twice as long as it is wide. it's area is 72 square units. Find the length of each side

Andrea built a circular barbecue pit with a circumference of 9 feet. She wants a rod to go across the pit to use for a rotisserie. The rod must go from one edge of the pit to the other, passing through its center.

How to find which cereal has the higher ratio of protein

Great a word problem for x+2=3x-8