Nicole has a board 88 in. long. she needs to to cut it into filt a space 80 3/8 in long

Hi my sisters and brothers can tell me the answer because i don’t understand the question

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are:

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.