Total # Posts: 27
You have a mass of 69 kg and are on a 57-degree slope hanging on to a cord with a breaking strength of 135 newtons. What must be the coefficient of static friction to 2 decimal places between you and the surface for you to be saved from the fire?
July 6, 2016
A jar contains 7 red balls, 5 green balls, 4 blue balls, and 3 white balls. A sample of size 7 balls is selected at random without replacement . Find t the probability that sample contains two red balls, 2 green balls, 2 blue balls, and 1 white ball.
December 26, 2014
Jana is going to install ceramic tiles in her kitchen. It measures 13' 3" by 12' 6". How many square feet of tile does Jana need? a.) 142.38 square feet b.) 143 square feet c.) 140.625 square feet Can you please show me how you got your answer
March 13, 2014
a rock is thrown straight up in the air from an initial height of ho, in metres, with the initial velocity vo, in metres per second. The height in metres above the ground after t seconds is given by h(t) = -4.9t^2 + vo + ho. Find an expression for the time it takes the rock to...
November 29, 2013
The profit p(x) of a cosmetics company in thousands of dollars is given by P(x) = -5x^2 + 400x - 2550, where x is the amount spent on advertising, in thousands of dollars. What amount must be spent on advertising to obtain a profit of at least $4 000 000?
November 29, 2013
The width of a rectangle is x inches long. The length of that rectangle is 5 inches less than Twice the width. If the perimeter measures 26 inches, what is the measure of the length and width of the rectangle. Show all the work and the algebra you used to solve this problem.
April 11, 2012
Probability!!! PLEASE help!!
A survey of Chaicago sports fans asked them 3 questions about which they prefer. Each fan must give exactly 1 answer to each question. Given a choice between the Cubs and White SOx, 40% chose cubs. Between the Bulls and Blackhawks, 57% chose bulls. between wildcats and maroons...
May 2, 2011
A pure monopolist sells output for $4.00 per unit at the current level of production. At this level of output, the marginal cost is $3.00, average variable costs are $3.75, and average total costs are $4.25. The marginal revenue is $3.00. What is the short-run and long-run ...
March 22, 2011
My 7th grade daughter has the following math problem and gets zero help from her "language arts" teacher who gave out this problem: WANT X BE ________ CAREER Each letter in this question stands for a 1-digit #. No 2 letters may stand for the same #. Find the value ...
March 8, 2011
Break Even Analysis Healthy Foods Inc. Product 50 lb. bags Price $12.50 Per bag Fixed Costs $68,000 Variable Costs $0.15 Per lb. Annual Interest Exp $7,500 a. What is the break-even point in bags? b. Calculate the profit or loss on 12,000 bags and 25,000 bags. c. What is the ...
June 11, 2010
1.United States and Mexico have two industries; call them, L-intensive (LIN) and K-intensive (KIN). They have two factors of production: labor and capital. US is a capital abundant country and Mexico is a labor abundant country. At the initial equilibrium, US exports KIN ...
March 22, 2010
A power boat of mass 460 kg is cruising at a constant speed of 8.9 m/s. The propeller provides a drive force of 765 N. The driver of the boat shuts off the engine, and the boat coasts to a halt. Assume -- contrary to fact -- that the resistive force due to the water is ...
October 2, 2009
medical codding and billing
Can someone plesae help me. I need to to answer these four quetions. I got something, but I'm not sure if Igot it right. The questions are, How can eliminating abbreviations reduce errors?. Should written policies be developed for abbreviation usage? If yes, what should ...
August 2, 2009
Economics (& Public Policy)
I'm an idiot, but please let me know where to begin here. This is a distance learning course, and I CANNOT contact the professor, and cannot make sense of it in the textbook. If someone can please look at this and let me know where to begin, I thank you VERY much. "...
March 22, 2007
Which of the following is most likely to be an insulator and why? copper plastic steel aluminum most metals are conductors. Most non-metals are insulators. Decide which in your list is not a metal. Just thought i'd learn some science
January 3, 2007