Which equation represents a proportional relationship that has a constant of proportionality equal to –10?

Find the solutions for a triangle with a =16, c =12, and b = 63º

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.

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?