12. If Zoey has a bag of marbles containing 18 red marbles, how many blue marbles should she add to the bag so that the probability of her drawing a blue marble from the bag is / frac{1}{4}

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Solve the given system equations 4x-3y=9 10y=2x+4

A new high school opens in a thriving suburban community. The number of students signed up to attend the school in its first year is 532, and the population of students is predicted to increase at a rate of 16% per year.

1. Michael, age 16, driving his car fast down a curvy road without headlights on. 2. Carissa, age 14, having trouble keeping up with all her assignments and when they are due.

A car used 1/64 of a gallon of gas to travel a 1/4 mile. How many miles for 1 gallon

What is 5,8904 time 10,3097

The speed of a ship is given by, where d is the distance the ship travels in 3 hours. If the ship travels 48 miles in 3 hours, what is the speed of the ship? A. 12 miles per hour B. 16 miles per hour C. 45 miles per hour D. 51 miles per hour

Charles Lindbergh made a first solo airplane flight from New York to Paris. His flight covered about 3610 miles in 33.5 hours. a.) find the unit rate in miles per hour b.) find the unit rate in hours per mile c.

A salad bar offers 10 choices of toppings for lettuce. In how many ways can you choose 3 or 4 toppings. a. 210 b. 330 c. 120 d. 720

What is the area of the composite figure? A trapezoid has base lengths of 12 centimeters and 13 centimeters. The other sides have lengths of 5 centimeters and 10 centimeters.

3. What is x? E 4x + 5 H