Why do repeating decimals have a 9 denominator?

If you were to roll the dice one time what is the probability it will not land on 4?

One card is drawn from a standard deck of cards. What is the probability it is an ace or red?

Solve 7.8*10^ (-4) - 2.4*10^ (-7)

Given the function f (x) = 3x + 1, evaluate f (a + 1)

Christina is saving money to buy a bike that cost 189 he saves 99 so far he plans on saving $10 each week and how many weeks will he have enough money to buy the bike use a bar diagram to solve arithmetically then use an equation to solve

Why is square root of 2 irrational?

If a 28 ft rope is cut into two sections with one section 3 times as long as the other section, how long is the shorter piece?

A fair number cube, labeled with 1 through 6 is rolled four times. What is the probability of rolling a 6 all four times?

Alex can run 24miles in 3 hours. What is his average speed in miles per hour?

A 400 gallon swimming pool is being drained. After three hours, 250 gallons have been drained. If the rate of drainage continues, how long will it take to drain the pool? A. 1.875 hours B. 4.8 hours C. 5.2 Hours D. 33,333.33 hours