What is the variance of the data set?

9, 7, 6.5, 7.5, 7, 8, 5, 6, 7.5, 8

Pythagorean stack how long is this side

What is the value of the expression below? 2 [32 - (4 - 1) ] Enter your answer in the box.

Which is a zero of the quadratic function f (x) = 4x2 + 24x + 11?

What is 3 1/5 + 2 3/4

You purchased 150 feet of chain that normally sells for $0.15 per inch. You were charged $22.50 for the sale. Was the price correct?

A bag contains 5 blue marbles, and 3red marbles. A marble is randomly drawn from the bag. The probability of not drawing a black marble is. The probability of drawing a red marble is

If tan (theta) = 3/4 and theta is an acute angle, find cos (theta)

Which rational number equals 0.5?

On a piece of paper, use a protractor and a ruler to construct two equilateral triangles: one with a side length of 4 inches and one with a side length of 5 inches. Which statement is true about the two triangles?

Evaluate 12: (-6) (3) + (-2)