Susan has 3 times as many books as Mary. Susan has 18 books. Which equation can be solved to figure out how many books Mary has?

A support wire is strung from a tree. The bottom of the wire is 24 ft from the tree. The length of the wire is 30 ft. Find each of the following values, and show all your work.

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A cylindrical water tank is 1.2 meters high and has a diameter of 4.6 meters. Approximately how much cubic meters of water will the container hold when it is half full?

If you multiply two decimals that are less than 1, can you predict whether the product will be less than or greater than either of the factors?

The prices per pound of different types of nuts are shown. write an expression that can be used to find the total cost of 2 pounds of peanuts, 3 pounds of cashews, and 1 pound of almonds, all for 20 % off.

Write the multiplication property use in the equation 100 X 1 = 100

what is 5309 divided by 43

Find angle E if angle E and angle F are supplementary, angle E = 2x + 5 and angle F = 5x - 38

How do I become better using mental math?

Alma and Blanca are playing a game where they roll a pair of fair six-sided dice and try to predict the outcomes. Blanca thinks that the probability of rolling a one and a five is greater than the probability of rolling a one or a five.