What are the roots of the equation x^2+4x-16=0

The controller of a chain of toy stores is interested in determining whether there is any difference in the weekly sales of store 1 and store 2. The weekly sales are normally distributed.

Find the area and the circumference of a circle with diameter 7m.

12 Tiles are being placed in front of a fireplace to create a trapezoidal hearth. The heart will have a hieght of 12 inches and bases that are 24 inches and 30 inches, How much space will the trapezoidal hearth take up

The reciprocal of 11/8 is

Hugh drove 774.4 miles. his car averaged 24.2 miles per gallon of gas. how many gallons of gas did the car use?

Which of the following expressions represents a function? { (1, 2), (4, - 2), (8, 3), (9, - 3) } y2 = 16 - x2 2x2 + y2 = 5 x = 7

Add 34 and 6 and then multiply by 3

Whats the mean of 12 2 8 6 57

Using the rate of $8 for every 2 pounds of rice, how much would a 1/2 pound of rice cost

Charlie can run at a speed of 3 yards per second. About how many miles per hour does Charlie run