Every student in the senior class is taking history or science. There are $200$ seniors in the class. If there are $126$ seniors taking history and $129$ seniors taking science, how many students are taking both history and science?

The largest prime factor of thirty-eight

Ashley post 17 status updates on her facebook wall each day. roberto posts 21 status updates on his facebook wall each day

A wildflower bouquet costs $4.25 at the farmer's market. A vase can be purchased for an additional $3.50. Kelly has $20 to buy a bouquet for her mother with a vase. She'd also like to buy just a bouquet for herself and another for her best friend.

Tan20*tan40 tan60*tan80=3 prove that

Rickie played eight rounds of miniature golf in June and eight rounds of miniature golf in July. He recorded his score for each round. Rickie's mother asked him if his scores varied more in June or July.

EStimate how many 12-ich rulers will be about the same length as a sheet of paper

Simplify the expression. Use the varbiables, numbers, and symbols that are shown. Drag them to the appropriate box in the polynomial. Use standard polynomial format. X (2x+3) + (x-3) (x-4)

2x+5-x=3 (2*-3) solve each equation

X^2+y-15=0 is a function

A coin is tossed 5 times. Find the probability that all are tails. Find the probability that at least 3 are tails.