If y varies directly as x, and y is 400 when x is r and y is r when x is 4 what is the numeric constant of vanation in this relation

A study of three hundred teenagers found that the number of hours they spend on instant messaging sites each week is normally distributed with a mean of 13 hours. The population standard deviation is 5 hours.

Remodeling is the process of taking apart walls and rooms to make the home feel different

James has 4 3/4 feet of rope he plans to cut off what and 1/2 feet from the rope how much rope well you have left

Use properties to find sum or product. 4 + (6+21)

Math - the difference between of six times a number and 7 is - 49 anyone know the answer?

Ian has 12.2 ounces of ketchup he uses 1/20 of the ketchup every time he has buafflo burger how many ounces of ketchup are left after ian has eaten 4 burgers

Marsha counted 24 birds at the wildlife refuge, and Aamir counted 86 birds. What is the ratio of Aamir's Burge to Marshall's birds in simplest form?

What is the solution to y=0.7x for the replacement set x=[2]?

What are the Pythagorean Triples?

Kalin jogs 8 meters in two seconds. At this rate, how many meters will he jog in 1 second