A researcher wants to conduct a study of the access speed of hard drives and estimate the population mean with 99% confidence. How many hard drives should he include in his sample to be accurate within 3 nanoseconds if the standard deviation of the population is known to be 8.0 nanoseconds?

What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer

Tod does not have any cookies. david gives jeff 8 cookies. then he splits half of the cookies he has left with tod. david let’s c represent the number of cookies that he starts with. he finds the number of cookies that tod has is 1/2 the difference of c and 8. write an expression to represent the number of cookies that tod has.

At 6 1/2 cents per pound of string beans how much does 7 pounds cost