12/12/13

let A,B,C and D be the four rational zeros of the function defined by p(x)= 3x^4-8x^3-11x^2+28x-12 Compute (1+A)(1+B)(1+C)(1+D)
problem of the week final answer must be in the form of (1+A) (1+B) (1+C) (1+D) using the function p(x)= 3x^4-8x^3-11x^2+28x-12
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12/12/13

The perimeter of a rectangular floor is 180 feet. Find the dimensions of the floor if the length is five times the width
The perimeter of a rectangular floor is 180 feet . Find the dimensions of the floor if the length is five times the width.   The floor has a length of ?feet and a width of ? feet.
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12/09/13

A helicopter goes 270 miles with the wind in the same time it can go 180 miles against the wind. The wind speed is 6 miles/hour. Find the speed with no wind.
I would like to know step by step as to how to set it up and solve. Thank you
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12/08/13

A store sells cashews for $6.00 per pound. and peanuts for $2.50 per pound...
 A store sells cashews for $6.00 per pound and peanuts for $2.50 per pound. The manager decides to mix 20  pounds of peanuts with cashews and sell the mixture for $4.00 per pound . How many pounds... more
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12/08/13

quadric functions and parobolas
the profit (p) in dollars, for a company modeled by the function p(x) = -750x^2 +15,000x, where x is the number of items produced. For which value of x will the company lose money.   a.... more
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12/08/13

At what time will they be together at point B for the first time?
This is the whole problem I need help with: Tyler and Amanda both start walking at 12 noon. Tyler walks from A to B, back to A and back and forth at a constant speed of 3 mph. Amanda walks from B... more
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12/05/13

I need to solve for x and give an exact answer. Exponential equation
5*2^x=70   I get this far: 2^x=70/5  
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12/05/13

system of linear equations: Matrices
Carletta has $10,000 to invest. as her financial consultant you recommend that she invest in treasury bills that yield 6%, treasury bonds that yield 7%, and corporate bonds that yield 8%. Carletta... more
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12/04/13

Last statistics question of the semester for extra credit and I am done. Any help will be appreciated. Thank you
The number of hours worked per week by medical residents is normally distributed with a standard deviation of 4.8 hours. We want to test the claim that the mean number of hours worked per week by... more
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12/04/13

the slope-intercept form of the line passing through the point (3,-6) and parallel to the line y=-4x+3
how do you do this? i need help, a lot of help bc i don't know how to do this omg 
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11/27/13

a question about the laffer curve
One real world application of a rational function is the Laffer Curve, as made famous by economist Arthur Laffer. According to Laffer, the elasticity of taxable income for the government changes in... more
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11/26/13

The marginal cost of a product can be thought of as the cost of producing one additional unit of output. For example, if the marginal cost of producing the ...
The Marginal cost of a product can be thought of as the cost of producing one additional unit of  output. For example, if the marginal cost of producing  the 50th product is $6.20, it cost $6.20 to... more
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11/26/13

How many rolls of each coin does he have?
There are 50 dimes in a roll of dimes, 40 nickels in a roll of nickels, and 40 quarters in a roll of quarters. Rob has 12 rolls of coins with a total value of $70.00. He has 3 more rolls of nickels... more
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11/25/13

I need help with this phyics homework
a car is submerged in 8.0 feet of water. assuming the area of one door(including window) is 10.0 ft^2. what is the pressure on the door?
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11/21/13

The length of a rectangle is less than twice the width, and the area of the rectangle is . Find the dimensions of the rectangl
The length of a rectangle is 1 ft less than twice the width, and the area of the rectangle is 21ft2 . Find the dimensions of the rectangle
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11/21/13

Algbrea 2 Math
A cube has a surface area of 6x^2+48x+96.  Find the length of the side?
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11/21/13

Algbrea 2 Math
Factor the following completely   x^3+5x^2+4x+20=
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11/20/13

How much per pound did the 50 pounds of seed cost?
This is the complete question: A pet store owner mixed two different bird seeds. She mixed 20 pounds of a seed that costs $2.25 per pound with 50 pounds of another seed. If the mixture of seeds... more
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11/20/13

Find the tension?
Luke Autbeloe twirls a 750 gram mass on the end of a 0.82 meter string. Find the tension at the top and bottom of the orbit. Assume the mass's velocity at both top and bottom is 3.7 m/s.
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11/20/13

How do I solve conic sections?
 y2=8x-32.
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11/19/13

Find height of a projectile
Height of a Projectile. A stone is thrown directly upward from a height of 30ft with an initial velocity of 60ft/sec. The height of the stone t seconds after it has been thrown is given by the... more
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11/19/13

what force (N) would the window have to withstand?
A medium-sized beer company which recently hired you is experimenting with extremely long, vertical tanks for storing freshly fermented product. As fate would have it, on your first day of work you... more
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11/19/13

How much money would Garrett have to invest at 10% so that that combined interest rate for both investments was 7% over the year?
This the complete question I need help with: Garrett invested $12,000 at an annual interest rate of 6%. How much money would Garrett have to invest at 10% so that that combined interest rate for... more
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11/17/13

What is its resulting acceleration?
Two 5 kg masses are attached to opposite ends of a long massless cord which passes tautly over a massless frictionless pulley. The upper mass is initially held at rest on a table 50 cm from the... more
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11/10/13

The flow rate of blood through a 2.00 ? 10-6 m radius capillary is 3.80 ? 10-9 cm3/s.
(a) What is the blood velocity? (This small velocity allows time for diffusion of materials to and from the blood.) (b) Assuming all the blood in the body passes through capillaries, how many of... more
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