08/21/16

Perform the indicated operation - Show Work Please!
f(t) = -t - 4 g(t) = t^3 - 3 Find f(g(t^2))   Final Answer is meant to be -t^6 - 1
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08/11/16

quadratic formula
Discuss how each of the methods (completing the square, and factoring) can actually be easier and more efficient for solving certain types of quadratic equations?   Explain why it is important to... more
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08/09/16

Converting Normal distribution to Lognormal
Let's say I have a random variable that is normally distributed with the mean of "a" and variance of "b". How can I get an equivalent lognormal distribution's parameters in terms of "a" and "b"?
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08/09/16

What is the math used for the picking of powerball numbers
I want to know what is the math used for the picking of powerball numbers in the lottery 
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08/09/16

Solving quadratic equation using quadratic formula
x2 + x/5 - 2/3=0 A=1 B=1/5 C=-2/3  
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08/05/16

help with the integral of tan
Okay, so my but shows e^ integral tanx to be e^ln|secx|.    as far as I know, the integral of tanx is -ln|COSx|.    how do they do that?
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08/04/16

the sum of the ages of father and his son is 45
the sum of the ages of father and his son is 45. years five years ago the product of their ages was 34. the ages of the son and father are respectivly   father age is f son age is s   f+s=45  ... more
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08/04/16

Math Help!
The cost of a pogo stick is $20, and the amount of tax due is $1.60. If the amount of tax is directly proportional to the cost of the storage unit, what is the tax rate?
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08/04/16

statistics
womans height are normally distributed with mean 63.6 in. and a standard deviation 2.5 in. If the U.S Army changes the height requirement so that all women are eligible except the shortests 3% and... more
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07/18/16

convert each of the following equation from rectangular to polar.It is best to have the equation in the form r=
convert each of the following equation from rectangular to polar.It is best to have the equation in the form r=.   1.x=2   2.2x-3y=5   3.x^2+y^2=10   4.x^2-y^2=4   5.x^2+(y-1)^2=1
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07/13/16

sin(4x)-sin(6x)=0
Solve for 0<x<2pi  
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07/13/16

sin(4x)-sin(2x)=0
Solve for 0<x<2pi
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07/06/16

Determine the equation of the circle that passes through the origin and is concentric with the circle x^2-6x-y^2-4y+4=0
This is a precalculus question aa nd I am having trouble on it
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06/29/16

solve the trig equation 1.cosx-cos^3(x)=0 2.csc=1/2 3.cos^2(x)-3sinx-3=0
solve the trig equation 1.cosx-cos^3(x)=0 2.csc=1/2 3.cos^2(x)-3sinx-3=0
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06/29/16

Find x and y in complex numbers
(x+yi)4=-7-24I Find x and y  In complex numbers
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06/22/16

Simplify. Sin^2?cos^2?-cos^2?
I have to simplify that particular expression. But I thought that maybe the cos would cancel. I'm not sure what to do
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06/22/16

Prove the following is true:
Prove that the indefinite integral from 0->pi/2 of cos^10(x) dx = 9/10 times the indefinite integral from 0->pi/2 of cos^8(x) dx   This problem showed up on one of the old exams and I fear... more
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06/18/16

C.D.F ,F(x)
The random variable X has pdf given by f(x)=(1+x),-1<x≤0 and f(x)=(1-x),0<x<1      &   and  f(x)=(1+x),-1<x<0 and f(x)=(1-x),0<x<1    && Could you help me how... more
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06/18/16

L HOPITALS and derivative
ive got 3 questions   lim x approaches positive 1 (sq rt of x^2 - 1) / (arcsecx)   lim x approaches 0  2arctan3x^2 / 7x^2     initial value prob   dy/dx=1/(x^2+1) -1     I NEED HELP... more
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06/18/16

Factorise x2+y2+z2-xy-yz-zx
As omega ina comex number. In a simple way for school grade student
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06/08/16

exponential equation questions
1.Evaluate log264+log327×log41/254 2.solve for x 2log4(x+4)-log4(x+12)=1 3.solve the equation (cube root256^2)×16^x=64^x-3 4.3x=9^(x^2-1/2) solve for x
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06/07/16

John flipped a fair coin 120 times. It landed tails up sixty-five times
What is the experimental probability that the coin will land tails yo the next time he flops the coin? Show your work. 
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06/07/16

Functions and graphs
a point P in the first quadrant lies on the parabola y=x^2. Express the coordinates of P as functions of the angle of inclination of the line joining P to the origin
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06/07/16

Combinatorics and Permutations
If a license plate has three letters followed by two numbers and ending with either a P or a D, how many plates can be made that are all different.Do not use any commas in your answer. (An example... more
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06/07/16

Find the standard deviation of the following binomial probability experiment:
Find the standard deviation of the following binomial probability experiment:A student guesses at all four multiple choice questions on a quiz where there are five choices for each question. There... more
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