Bob can type two recommendation letters in 4 hours while Bill can accomplish the same task in 6 hours. How many hours would it take them, working together, to type six letters?

A bird b is spotted flying 5,000 feet from a tree. An observer spots the bird at a distance of 13000 feet. What is the angle of depression from the bird to the observer

People with bmi less than 18.5 are often classified as underweight. What percent of men aged 20-29 are underweight by this criterion?

If c (x) = 2x^2 - 4x + 3 17. c (3a) 18. c (b^2)

762 - b + 3b + 6 - 302 + 5 + 202 + 7b

John needs to cut three strips of wood, 11 3/5 inches, 15 1/5 inches, and 9 2/5 inches long. He has a strip that is inches long. How long will the leftover piece be after he cuts what he wants?

The Chinese system presented in the text has symbols for 1 through 9, and also for 10, 100, and 1000. What is the greatest number expressible in that system?

Convert each measure to degrees. Round answers to the nearest hundredth if needed. a.) π/9 b.) - 2π/3

Include sales tax 6% an inn charges $265 per night. find the cost before taxes

A law firm has five senior and six junior partners. A committee of three partners is selected at random to represent the firm at a conference. What is the probability that at least one of the junior partners is on the? committee?

Find the circumference of each circle with the given radius or diameter. Round to the nearest tenth. Use 3.14 for T. d = 14.2 mm