Suppose a car uses 30 gallons of gasoline for a trip of 500 miles. how many gallons would be used on a trip of 300 miles?

What is the number 321,000,000 in scientific notation? also what is the number? ?

Find the multiplicative inverse of 8-12i

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.