Please help I will give brainlest or whatever!! Which expression is equivalent to 6(z + 7)?

A.42 + 6

B. 7(z+6)

C. 7(6+z)

D. 6z + 42

Please help!!

What is the first step of an indirect proof of a number that is divisible by two

Thompson and thompson is a steel bolts manufacturing company. their current steel bolts have a mean diameter of 127 millimeters, and a variance of 36. if a random sample of 35 steel bolts is selected, what is the probability that the sample mean would differ from the population mean by greater than 0.5 millimeters? round your answer to four decimal places.

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