Together and Alone Word Problems

Jim can fill a pool carrrying buckets of water in 30 minutes. Sue can do the same job in 45 minutes and Tony can do the same job in 1/12 hours. How quickly can all three fill the pool together?

Budgeted Sales

Farley Company reported the following information for 2007: Budgeted Sales: September $ 240,000; October $310,000; November $290,000; December $360,000; and January $200,000. Budgeted Purchases: September $ 90,000; October $120,000; November $128,000; December $ 144,000; and January $ 88,000. -All sales are on credit. -Cus ...continues

Accounting Homework

I am having trouble with accounting. I am not really good at any type of math. If I could get some insight on this?

Prove that Binomial[2n, n] = Sum from k=0 to n of Binomial[n,k]^2

Prove that (2n choose n) = the sum from k=0 to n of (n choose k) squared.

Combinations

If 22 cyclists started the first stage of a cycling race how many diffrent winners are possible among the first 3 places?

mixed problems

please see attached document. All work must be shown.

Combination of problems. Please show all work

1. (2 pts) During the last hour, a telemarketer dialed 25 numbers and reached 7 busy signals, 3 answering machines, and 15 people. Use this information to determine the empirical probability that the next call will be answered in person. 2. (2 pts) If you roll a die many times, what would you expect to be the relative freq ...continues

Statistics problems

1. (2 pts) The objective of statistics is best described as: A) To make inferences about a sample based on information we get from a population B) To make inferences about a population based on information we get from a sample taken from the population C) To use population mean,  as an estimate of the sample mean, ...continues

Percent Margin

A submarine can withstand 300 pounds per square inch of sea pressure before buckling. If sea pressure increases by 40 pounds per square inch for every 100 feet of depth, how deep can the submarine go if it wants to maintain a 20 percent margin of safety?

Need help with correcting this problem. I am attaching my work with the problem. Please correct and on a separate sheet please highlight what I did incorrectly. Thanks!

This is a forecasting and regression analysis problem that requires the regression analysis to be done to find the slope and intercept. Also adjust the chart to show the Y variables in excel 2007. Please explain that also. Carpet City wants to develop a means to forecast its carpet sales. The store manager believes that the s ...continues