55, 65, 70, 70, 72, 85, 90, 90, 93, 100 find the mean absolute deviation.

2x+3y=12 x-y=6 solve the following system equations

Apair of ordinary dice is rolled. what is the probability that each die will show a number higher than 4. 1. (1/36) 2. (1/12) 3. (1/6) 4. (1/4) 5. (1/3)

1. the wheeling bridge in west virginia is about 307 meters long. if you walk with a stride of about meter, about how many steps would it take you to cross this suspension bridge?