Which formula should you use for variance?

Which formula should you use for standard deviation?

in a right triangle, the hypotenuse and one of the legs are 17 and 15 respectively. Find the other leg

Solve by substitution 2y=x+1 - 2x-y=7

What is g in this equation " 1000+g = 10,000

Given a polynomial f (x), if (x + 5) is a factor, what else must be true? f (0) = 5 f (0) = - 5 f (5) = 0 f (-5) = 0

The length of a field is 120 yards and its width is 60 yards. If inch represents 25 yards, what would be the dimensions of the field drawn on a sheet of paper a. 1.7 inches by 3 inches c. 3 inches by 3 inches b. 4.8 inches by 2.4 inches d.

2x+3y=12 how do I solve?

Why is b ≠ 1 a condition for f (x) = abx (x is a exponent i cant put it for some reason) ?

The price of a bag of candy is q linear function of the amount of candy in the bag. A bag containing 25 pieces costs $0.99 and a bag containing 100 pieces costs $3.99.

Alonso paid for repairs on his car, and 3/5 of the bill was for labor costs. How much was the total bill if the cost of the labor was $79.50? Let b = the amount of the total bill. Which equation and solution is correct?

Which graph shows the inequality y<2