Susan is on the swim team. Below are four of her times swimming 100 meters.

23.07 seconds, 22.24 seconds, 23.18 seconds, 22.95 seconds

what is the difference between her best times and worst time?

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?

If john is (j) five inches shorter than anna (a) which expression represents johns height A - 5-a B - a-5 C - 5a D - a+5

Circle 1 has center (?4,?7) and a radius of 12 cm. Circle 2 has center (3, 4) and a radius of 15 cm. What transformations can be applied to Circle 1 to prove that the circles are similar? Enter your answers in the boxes.

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