When –3 is multiplied by the sum of a number and 8, the result is –21. find the number. a. 3 b. –1 c. 8 d. –2

Aparallel system functions whenever at least one of its components works. consider a parallel system of n components, and suppose each component works independently with probability 0.5. find the conditional probability that component n works given that the system is working

The perimeter of a stage is 116 feet. it is 17 feet wide. how long is it?

If my mom gets $13.05 an hour, and she works from 3: 30 to 10: 45 in the morning, how much money does my mom make?