Katie has 8 black marbles, 12 clear marbles, and 10 blue marbles in a bag. If she picks one at random, what is the probability that she will pick a black marble? (Enter your answer as a fraction in its reduced form.)

Kareem inserted 2 quarters into a dryer at a laundromat, and the dryer ran for 12 minutes. At this rate, for how long would the dryer have run if Kareem had inserted 8 quarters instead? 16 minutes 18 minutes 48 minutes 96 minutes

7 divided by what equals 7.35

A machine can produce 250 items per hour. If the operator of the machine works 40 hours per week, how many items are made by this machine in one year?

How do you round 201.5276

Find the quotient and reminder: 2,697/12

Aurora's bike has wheels with a perimeter of 2.3 meters. When Aurora goes to school the wheels spin 850 times. How long is the road that Aurora does when she goes to school?

Definition of congruent

86.17 hrs divide into 30 days

2. A chain 5 links long is joined to a chain 7 links long. How many links long is the resulting chain?

Evaluate f³+11g-4h when f=3, g=2, h=11