Explain the relationship between variance and standard deviation. Can either of these measures be negative? Explain.

Which of the following are square roots of the number below? check all that apply 81 a. 18 b. - (81) ^1/2 c. 9 d. 81^1/2

What are some limitations in using a line of best fit drawn on a scatter plot to make predictions? a. There may be too much information given on the scatter plot. b. The line may represent a negative or positive correlation. c.

Solve for b. b + 3 (3 - 2b) = 1 - 2 (b + 1)

Consider the function represented by the equation x - y = 3. What is the equation written in function notation, with x as the independent variable? f (x) = y + 3 f (x) = - y - 3 f (x) = - x + 3 f (x) = x - 3

The sum of (2x^3 - 3x^2 + 4) and which polynomial results in the polynomial (5x^3 + 4x^2 - 1) ? A. (-3x^3 - 7x^2 + 3) B. (3x^3 + x^2 - 3) C. (3x^3 + 7x^2 - 5) D. (7x^3 - x^2 + 3) E. (10x^3 - 12x^2 - 4)

A right triangle has legs that are 19 in. and 23 in. What is the area of the triangle

What equation results from completing the square and then factoring x2+4x=12

In two years the value of a car chnaged from 14,000 to 11,200 what is the percent of change

What is the difference 4 1/3 - (-2/3)

Elaine is painting a fence. she knows that she needs 1 gallon of paint for each 10 feet of fencing. The fencing will enclose a rectangular yard that is 3 yards long and 2 yards wide. how much paint does Elaine need?