Pat kept track of the number of hours that he spent at the park each week for several weeks. He spent 10, 4, 1, and 5 hours. What is the mean number of hours that Pat spent at the park each week? O A. 20 hours O B. 9 hours O C. 5 hours O D. 4 hours​

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

What is the rotational symmetry of a wheel

The final cost of a sale is determined by multiplying the price on the tag by 75%. which best describes the function that represents the situation?