04/22/14

What is the probability that a random sample of 17 persons will exceed the weight limit of 3,434 pounds?
The weight of people in a small town in Missouri is known to be normally distributed with a mean of 186 pounds and a standard deviation of 29 pounds. On a raft that takes people across the river, a... more
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04/22/14

Find the surface area of a cone that has a slant height of 20 ft and the radius of the base is 10ft
The cone has a slant height of 20ft and the crock base has a radius of 10ft (use pi=3.14) I basically need to find the height of the cone and then I'll be able to solve it
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04/22/14

how to slope 3/4 y- intercept (0, 35)
The slope is 3/4, the y intercept is
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04/21/14

Kx^2-16x+32=0
Solve for k if the roots of the equation kx^2-16x+32=0 are equal.
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04/17/14

Input and Output math
These are the numbers for the input; 0,1,3,4 and the output are; 4,3,1,0,   1) identify the domain of this function. 2) identify the range of this function. 3) give the corresponding ordered... more
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04/17/14

Proving Other Trigonometric Identities
Prove that:   1 + cos x =     sin x        sin x        1 - cos x
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04/16/14

the question is in the description part.
Question: suppose that a password for a computer system must have at least 8, but no more than 12, characters, where each character in the password is a lowercase english letter, a digit, or one of... more
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04/16/14

how many dimes and quarters do i have if i have 5 more quarters than dimes totalling 5.10. how do i turn 5.10=.10x+.25(x+5) into a system of equation
how to make a system of equations out of the word problem that would give me the points to graph and the systems to solve by process of elimination, substitution and graphing it. the word problem i... more
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04/16/14

Estimate the number of students enrolled in a community college in 2015.
In 2010, there were 1918 students enrolled in a community college; over the next several years, the admissions office anticipates that the enrollment will increase at a constant rate of 130 student... more
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04/16/14

probability
An NBA player makes a successful free-throw 85% of the time.  Find the probability that he is successful exactly 6 times in 7 attempts.  
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04/16/14

finite math
A club consisting of 6 men and 8 women will choose a committee of 5.  In how many ways can the committee be chosen if it must contain at least 1 man
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04/14/14

Sums and Arithmetic Series Quick Questions
Jenny decides to raise money for her local charity by encouraging people to lay quarters on the floor of a classroom in the shape of an equilateral triangle. She puts one quarter in the first row,... more
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04/13/14

decision variable, objective function, constraint
The Charm City Company has three plants to produce HDTVs. These plants ship HDTVs to four markets. The following table summarizes the shipping costs (in dollars) from a plant to a market, the... more
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04/12/14

decision variable, objective function, constraints
An advertising campaign for a new product will be conducted in Baltimore area and can use TV, radio, magazines, and internet advertisements. Information about each medium is shown below. Medium  ... more
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04/11/14

Decision variables, objective function, and constraints.
A brokerage firm has just been instructed by one of its clients to invest $350,000 of her money. The analysts at the brokerage firm are considering the following options for investment:            ... more
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04/10/14

Calculating force
At a building site, an iron girder of mass 400 kg is suspended from a crane by a steel cable. Assume that the cable has a circular cross-section of diameter 24 mm.a.What is the tensile force in... more
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04/07/14

For samples of the specified size from the population described, find the mean and standard deviation of the sample mean  x
The mean and the standard deviation of the sampled population are, respectively, 113.9 and 32.1. n = 6
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04/06/14

(a) Formulate a linear programming problem to minimize total cost for this transportation problem.(b) Solve the linear programming formulation from part (a) by
                              Nashville     Miami         Charleston        Supply __________________________________________________________________ Tucson                        900         1200... more
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04/06/14

question about earth science processes
process 1.  6 C02 + 6 H20 → C6H1206 + 6 02   process 2.  C6H1206 + 6 02 → H20 + 6 C0 2 + energy   process 3.  C6H1206 → energy + 2 CH 3CHOHCOOH   process 4.  C6 H12 06 → energy + 2 CO2 + 2... more
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04/02/14

probability
A basketball player makes a successful free throw 86% of the time. Using the Normal approximation to the binomial, estimate the probability that he makes between 30 and 40 successful shots in 50... more
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03/31/14

probability
The weight of smelt is a normal variable with mean 1.5 ounces and standard deviation of 0.2 ounces. Find the probability that a randomly selected  smelt weighs more than 1.348 ounces.
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03/31/14

The mean length of angelfish (a popular tropical fish for aquariums) is 11.4 cm with a standard deviation of 1.5 cm. Assuming that the length of angelfish is a
The mean length of angelfish (a popular tropical fish for aquariums) is 11.4 cm with a standard deviation of 1.5 cm. Assuming that the length of angelfish is a normal random variable, find the... more
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03/31/14

find Pr[63.04=X=70.96]
Given a normal random X with mean 64 and a standard deviation 3, find Pr[63.04≤X≤70.96]
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03/31/14

find Pr[X=66.86]
Given a normal random variable X with the mean 62 and a standard deviation 3,  find Pr[X≤66.86]
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03/31/14

probability
The acidity of human blood is measured on a pH scale and is a  normal random variable. The mean pH of blood is 7.2 with a standard deviation of 0.15. Find the probability that random selected... more
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