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

Margaret is playing a game with a standard deck of 52 cards which contains 4 jacks. The first player to select a jack gets to start the game. What is the theoretical probability that Margaret, when choosing first, will choose a jack?

Ten balls numbered from 1 to 10 are placed in a bag. Some are white and some are grey, as shown below.

The scatter plot below shows the number of DVDs Aaron sold in different months: Plot ordered pairs 1, 20 and 2, 50 and 3, 80 and 4, 110 and 5, 140 What is the approximate predicted number of DVDs Aaron will sell in the 13th month?

Solve the system of equations using substitution y=2x-4 and x + 2y=10

1 day 24 hours 60 minutes 60 seconds =? seconds 1 - 1 day - 1 hour ^. 1 minute How many seconds are in one day?

A triangle with vertices A (2, - 2), B (-1, - 1) and C (0, 2) is reflected across the y-axis and then dilated by a factor of 3 with the origin as the center of dilation. What is the x-coordinate of the A'? A. 2 B. - 6 C. - 4 D - 2

Radius of diameter 4.75 inches

The value of a house is $165,000 and it loses 4% of its value every year. A. Use the exponential decay formula below to write a function for the home's value, y, after t years. y=A (1±r) ^t B.

Timothy paid $14,850 for a used car 4 years ago. Because he did not properly maintain the car, he sold it for $3,960. What was his average annual depreciation?

What operation is being used in the equation? y - 11 = 20