A bag contains 80 marbles: 40 are red, 20 are blue, and 20 are black. what is the probability of selecting a red or blue marble at random

if the rate of change for one linear function is positive and for another is negative can they both be either increasing or decreasing?

What is 12 times 12 plus 1

If the rise of BC is 8 and the run of BC is 2, the slope of BC is ...

Apply the distributive property to create an equivalent expression - 9⋅ (5j+k) =

Using the equation y = 3x - 5, what would the output be for an input of 2

An anthropology graduate student measures the floor of a round hut and calculates that it has an area of 12.56 square meters. What is the floors diameter?

9 times the sum of a number is - 162 what is the number

A perfect square is the square of an integer. Of the integers from 2 through 99, how many have at least one perfect square factor > 1?

0.2 with an exponent of 4

Marco is selling floral arrangements. Each arrangement uses 1 vase and 11 orchids. Each case cost Marco $4.00. Let C be the total cost of the arrangement and r be the cost of 1 orchid. Which equation should Marco use to find the total cost A.