Ann can build a model car in 5 hours, while Sam can build the same model in 15 hours. How many hours would it take for them to build the model together? (Set up the rational equation, and solve for x)

Find the value of x and y (3y+5) (2x+1) 85

Find the area of a rectangle with a length of 11 cm and a width of 7 cm.

Carmine took out a 28-year loan for $151,000 at an APR of 9.9%, compounded monthly, while Richie took out a 28-year loan for $116,000 at an APR of 9.9%, compounded monthly. Who would save more by paying off his loan 17 years early?

An ostrich can run at a rate of 50 miles in 60 minutes. At the rate, how Long would it take an ostrich to run 5 miles

In order to estimate the average electric usage per month, a sample of n = 81 houses was selected, and the electric usage was determined. (a) Assume a population standard deviation of 450-kilowatt hours. Determine the standard error of the mean.

Which of the following functions would not model exponential decay? August899 August899 10 months ago A. h (x) = 44 (0.89) ^2x B. j (x) = (0.34) ^x-3 C. b (x) = 876 (1) ^x D. z (x) = 7 (0.999) ^4x-2

A roller coaster with a mass of 1000 kg is shot to a speed of 30 m/s in 8 seconds. How much kinetic energy does this coaster have at the end of the 8 seconds? To receive full credit, show all of your work in the space below.

Junior has saved money in his piggybank over the winter. He wants to buy a $30 computer game. If he has 14 one-dollar bills, 16 half dollars, 12 quarters, 8 dimes, 25 nickels, and 10 pennies, how much more does he need to borrow from Dad to buy the

Find the Volume of a cylinder with a base area of 25pi inches squared, and height equal to the radius

A 3 digit number whose ones digit is three times its hundreds digit & whose tens digit is twice its hundred digit. What is the number