In 2016, the mean score on the AP Statistics exam was 2.80, with a standard deviation of 1.35. The mean score on the AP Calculus exam was a 2.86, with a standard deviation of 1.55. What is the combined mean and standard deviation for these exams?

Simplify 2x-2y + 5z-2x-y+3z

Solve by graphing x^2-6x+5=0

A - 3b/7=5 solve for b

You are baking donuts for your class. There are eight total students in your class and you have to bake 11 donuts. Right and solve any Quetion to find the additional number X of donuts you need to bake in order to have for donuts for each student.

Kevin goes to the grocery store and buys a box of cereal, a family size box of cereal, a candy bar, and a king sized candy bar.

If y = - 4 when x = 10, find y when x = 2.

If a = 3, b = 1, and c = -1, what does (b + c) - (c-a) equal? 4. F. G. 3 H. 0 J. - 2 K. - 4

A chef uses 3/3/4 pounds of semolina flour

13. Solve for s. 2 (s + 7) = 12

How to solve 4p (q-1) + q (1-p)