A textbook store sold a combined total of 480 history and math textbooks in a week. The number of history textbooks sold was two times the number of math textbooks sold. How many textbooks of each type were sold?

Jean traveled the first 100 miles in 5 hours. Then she doubled her speed for the last part of the trip. If the total trip was 300 miles, how many hours did it take Jean to travel the last part?

Add: (-6 - n + 2n2) + (8 - 3n - 10n2) -2 - 4n - 8n^2 2 - 2n - 8n^2 2 - 4n - 8n^2 -2 - 2n - 8n^2

My friends students were wondering what 105 times what Equuleus 210

Elena and Gary have a talk show on tv. Elena has been in 525 episodes of the show, and gary has been in 325 episodes. What is the ratio of episodes with Gary to episodes with Elena?

Interval 20-29 what's the frequency

Anne is taping 7 boxes for storage. She uses feet of tape to close each box. How much tape will Anne need to tape the boxes? Express your answer in simplest form. A. 7 1/2 feet B. 10 1/2 feet C. 11 feet D. 12 feet

Farah rolls a fair dice and flips a fair coin. What is the probability of obtaining a 5 and a head?

If the cos = 6/10 & tan = 8/6 what is sin?

On a standard IQ test, the scores are normally distributed with a mean of 100 and a standard deviation of 20. a) If you score 140, in which percentile are you? b) If you score 90, in which percentile are you?

What is the smallest number? 32%, 0.2, 2/5, 55%