There are 10 red and blue marbles, among which r are red. How many are blue? Denote blue marbles as b

How many ways can you select 3 different toppings for a pizza with 8 toppings to choose from?

Find the area of a rectangle with the length measuring 8 km and the width measuring 5km

Sam intends to roll a six sided cube 100 times. What is the probability model he can use to predict whether or not each roll will give a result that is not a prime number?

P divided by 28 = - 26

Shelly compared the number of oak trees to the number of maple trees as a part of a study about hardwood trees in a woodlot. She counted 9 maple trees to every 5 oak trees. Later in year there was a bug problem and many trees died.

A store ordered 28 boxes holding 12 banana muffins each and five boxes holding 6 blueberry muffins each. What was the total number of muffins the store ordered?

Use substitution to solve the system of equations. y = - 2x x - 3y = 21 (3, 4) (-6, 12) (3, - 6) (-2, - 6)

Solve x/42=3/7 using two different strategies. explain each strategy

Jerry kitten grew 3cm between the age 4and 5 months. The kitten grew 2cm between the ages of 5 and 6 months. At 6 months the kitten is 19cm tall was jerry kitten at the age 4months

Find the discriminant and the number of real roots for this equation 9x^2+12x+4=0