On the written part of her driving test, Sara got 84% of the questions right. If Sara got 63 questions right, how many total questions were on the test?

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

Solve for x -2.3(r - 1.2 ) = -9.66 enter you answer as decimal.

The weight v of an object on venus varies directly with its weight e on earth. a person weighing 120 lb on earth would weigh 106 lb on venus. how much would a person weighing 150 lb on earth weigh on venus?