11/27/17

Assume that the total revenue received from the sale of x items is given by, R(x) = 30 ln (3x + 2), while the total cost to produce x items is C(x) = x/4. Find

Assume that the total revenue received from the sale of x items is given by, R(x) = 30 ln (3x + 2), while the total cost to produce x items is C(x) = x/4. Find the approximate number of items that... more

11/26/17

Sinusoidal Function

The pressure P (in pounds per square foot), in a pipe varies over time. Five times an hour, the pressure oscillates from a low of 40 to a high of 250 and then back to a low of 40. The pressure at... more

Find a sinusoidal function with the following four attributes:

(1) amplitude is 16, (2) period is 9, (3) midline is y=33 , and (4) f(3)=49 .

Satistics - determine the required sample size

An IQ test is designed so that the mean is 100 and the standard deviation is 15 for the population of normal adults. Find the sample size necessary to estimate the mean IQ score of statistics... more

What is the confidence interval estimate of the population mean μ​?

Using the sample statistics, construct a 99% confidence interval estimate of the mean body temperature of all healthy humans. Do the confidence interval limits contain 98.6 degrees°F? What does the... more

11/26/17

Assume that a procedure yields a binomial distribution with n trials and the probability of success for one trial is p.

Assume that a procedure yields a binomial distribution with n trials and the probability of success for one trial is p. Use the given values of n and p to find the mean muμ and standard deviation... more

List all the subsets of (1,2,3,4,), which do not include 3

 List all the subsets of (1,2,3,4) which do not include 3?  

Calculus and Derivatives

Given the function y = 11 sin (7 pi x - 5 y) and the point (4,0). (A) Verify that the given point is on curve. (B) Find the equation of the tangent line to the curve at the given point. (C) Find... more

Elasticity for Calculus

For a particular commodity, the demand function is q=110,000/p....Find the elasticity when p=8

11/22/17

trigonometry question

prove that (1-tan26)(1-tan266)= -4

Find the separate equation to the lines represented by the following equation

Trigonometry Identities and equation

Find the separate equation to the lines represented by the following x^2+2xy+cosecA+y^2.

Trigonometry Identities and equations

Assume that 80 percent of the adult population the united states has tested either coke or pepsi.

Assume that 80 percent of the adult population the united states has tested either coke or pepsi. For a sample of 250 adults, how many would you expect to have tasted either coke or pepsi? What is... more

11/21/17

pre calculus min/max area/perimeter

a farmer wants to build three rectangular pens of the same size next to a river so that they are separated by two fences. If she has 1,000 feet of fencing and does not fence the side next to the... more

11/21/17

Cost function

A firm is able to determine that its marginal cost, in dollars, from producing x units of an item is given by C′(x)=2100x-2.2, where x≥1. Suppose that it were possible for the firm to make... more

11/21/17

Find Cost Fucntion

The marginal cost for printing a paperback book at a small publishing company isc(p) = $0.013 per page where p is the number of pages in the bookA 620-page book has a $20.68 production cost. Find... more

ind a positive angle less than 2piπ that is coterminal with the given angle.

Find a positive angle less than 2piπ that is coterminal with the given angle. -pi/-150

how many of the 225 children sampled said chocolate chip is thier favorite kind of cookie

a simple random sample of 225 children was taken as part of a poll. among these 225 children, 47% stated that chocolate chip is their favorite kind of cookie.

Can you help with my Precalculus?

im really struggling. The question reads “How much 60% acid solution must be added to 20 ml of 30% solution to achieve a 50% acid solution?”Can you help?

Can you help with my Precalculus?

in my Precalculus homework, the question is “There has to be a rectangular area of 1680 ft sq. for my pig. There is the wall of a barn for one side. How much fencing would you need to buy?” Yes... more

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