How many quarts of water should be added to 6 quarts of 80% antifreeze solution to dilute it down
to 30%?

Evaluate the expression for the given value of the variable 2×(c2-5) for c=4

On saturday a souvenir shop had 125 customers.sixty four percent of the costumers paid with a credit card. how many costumers paid with cash?

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.