Josh and Andrea each have $10.50. Josh spends all his money and buys 2 hamburgers and 3 sodas. Andrea spends
$7.50 and buys 2 hamburgers and one soda. What is the
cost of one hamburger?

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.

Jimmy can run 3.5 miles in 20 minutes. how far can ne run in one hour and ten minutes?

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.