How do you turn a positive number like 52 into a decimal?

Asimple random sample of size nequals14 is drawn from a population that is normally distributed. the sample mean is found to be x overbar equals 70 and the sample standard deviation is found to be sequals13. construct a 90% confidence interval about the population mean

How much dextrose 70% must be mixed with dextrose 5% to prepare 1,000 ml of dextrose 20%?

The functions below show the amount of money bella and sweet t had saved after earning money for doing chores. which description best compares the two functions?