Ahummingbird may flap its wings anywhere from 64,800 to 280,800 times in an hour. round the smaller number to the nearest ten thousand.

Arectangular prism is 3 meters long, 6 meters wide, and has a height of 9 meters. what is its surface area?

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

Apublic library wants to place 4 magazines and 9 books on each display shelf. the expression 4s+9s represents the total number of items that will be displayed on s shelves. simplify the expression