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In need of help ASAP! Tysm if you respond with the answer, I really appreciate it!

What is the measure of x, in degrees

Volume of a cylinder with a radius of 13 in and height of 30 in

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