A bag contains 12 red, 30 blue, 20 green, 10 yellow, and 8 black marbles. Nancy chooses 1 marble from the bag. What is the probability that the marble is red, blue, or black?

What is the value of the expression below? 2[3 (42+1) ]-23

Your house is 1030 meters from school. Your friend's house is 1.5 kilometers from school. Whose house is farther from school

When graphing pairs of similar triangles I don't know how to figure out positive and negative for the fraction of slope

How many zeros will be in the product 7x5,000 without calculating the answer explain how to use the Associative Property to find the number of zeros in the product.

A new neighborhood is being built. On one street, there are 4.16 acres available. If the builder wants to divide up the land so that he can build 8 houses with equal sized yards, how large will each lot be?

You are painting a room. After 18 minutes, 64% of the room still needs painted. How long does it take to paint the entire room? Write an equation that represents the percent y of the room that still needs painted after 3 minutes.

46,145 round to the nearest ten

There are three grades in the school. One grade has 1/3 of the students, one grade has 1/4 of the students. What fraction of students is in the remaining grade?

9 ten thousands scientific notation

The circumfrence of a circle is 16TT