04/23/14

Please help set up a derivative problem for business calc.
Suppose the annual cost per active-duty armed service member in a certain country increased from $80,000 in 1995 to $90,000 in 2000. In 1990, there were 2 million armed service personnel and this... more
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04/23/14

Word problem
A recording studio invest $24,000 to produce a master CD of a singing group. It cost $1.50 to make each copy of the master and cover the operating costs.1. Complete the cost chart C(d). Number of... more
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04/23/14

function help please
Let f(x)=   6x^2-6                     x^2-7x+10 (a) Write f(x) with the numerator and denominator completely factored. (b) State the domain. (c) State the vertical asymptote(s). (d) State... more
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04/23/14

Help please please
Solve (x^2-9)/x<=0 and write interval notation for the solution set. Show careful algebraic work/explanation.    
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04/23/14

Physics Question
The value of specific heat for copper is 390 J/kg⋅C°, for aluminum is 900 J/kg⋅C°, and for water is 4186 J/kg⋅C°.   (a) What will be the equilibrium temperature in degrees Celsius when a 265g... more
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04/22/14

inverses of equations
find the inverse of f(X)= 4sqrt(x-2)-8
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04/22/14

how to solve
1/2(3/4x-2/3) is subtracted from 2/3(3/4x-1/2)
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04/22/14

how to solve a slope intercept math problem
Slope 3/4 y- intercept (0, 35)
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04/21/14

What is the null and alternative hypotheses?
An SRS of 16 student subjects took a sensitivity to contrast after 3 hours facing into bright sun, both with and without eye grease. This is a matched pairs design. Here are the differences in... more
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04/21/14

Solve for the equation
I need help trying to sole tan(2x) =1- where x is more than or equal to 0 but x is less than or equal to pi
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04/19/14

finding the value of x
If y varies directly as x and inversely as z^2 and y = 3 when x = 2 and z = 4, what is the value of x when y = 6 and z - 2?   would you please show my how to solve this problem.     thanks
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04/18/14

algebra help
f(x)=x+2 g(x)=4x2-10 (f+g)(2)
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04/18/14

2sec^2x(1-sin^2x)
Use the fundamental identities to simplify the expression    
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04/18/14

helping solving for y and x
    1.  if y varies directly with x and y = 10 when x - 15, find y when x = 6   2.  if x varies inversely as y and x = 2 when y = 8, find x when y = 17   3.  if y varies directly as x and... more
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04/18/14

helping solving sum and product of roots
  1.what is the sum of the roots of the equation ax^2 + bx + c = 0     what is the product of its roots       2.  solve the equation x^3 + 2x^2 + x + 2= 0, if -2 is a root     3.  given... more
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04/17/14

Eliminate the parameter
1) x=3-2t     y=2+3t     2) x=sqrt(t)      y=1-t       3) x=4+2cos(theta)     y=1+2sin(theta)     4) x=sec(theta)     y=cos(theta)    5) x=e^2t    y=e^t                            can... more
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04/17/14

what is the positive difference between Ronald's height and the mean height?
with a height of 68in , Ronald was the shortest president of a particular club in the past century. The club presidents of the past century have a mean height of 71.4 in and a standard deviation of... more
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04/17/14

Find Sum ...
what is sum of  (1)2 + (2 )2+(3) 2+(4) 2+(5)2 ..........  (n)2
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04/16/14

whats the name of a polygon that each side is 6 feet?
Each side of the polygon measures 6 feet. Whats the name of that polygon?
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04/15/14

how do you do this step by step?
Use the given functions to find the requested function.  f(x)=7x+6, g(x)=3x^2  Find (g-f)(x)
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04/15/14

Marrisa hike at a pace of 2 miles per hour. If she hikes for 6 and 1/3 hours, how many miles did she hike?
I cant seem to convert the fraction to how many miles!
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04/15/14

Please find f(x)?
If f'(x)=-f(x) and f(1)=1, find f(x).    Answer: e^(1-x)   Please show all the work. 
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04/15/14

7x+2y=2, 6x-2y=4
7x+2y=2, 6x-2y=4
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04/14/14

Why do you multiply the two values?
Hi! I am having some trouble doing a combinations problem, which is stated below:   How many committees of five people can be selected from 8 men and 8 women if the committee must have 3 men and... more
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04/14/14

Write the equation of the circle.
Write the equation of the circle with a diameter whose endpoints are (0,7) and (0,3). 
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