10/08/16

Hypergeometric Probability Distribution
The game called Lotto sponsored by the Louisiana Lottery Commission pays its largest prize when a contestant matches all 5 of the 39 possible numbers. Assume there are 39 ping-pong balls each with... more
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10/08/16

Pre-Calculus
If f(theta) = cos theta and f(a) = 1/4, find the exact value of f(-a)
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10/08/16

What is the limit of the sequence
limit n->infinity −(7.2^n+5.5^n/7+3.5^(n+1))?
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10/07/16

Parametric Curves
a. Describe the motion of a particle with position (x, y) as t varies in the given interval.x = 4 + 3 cos t, y = 4 + 3 sin t, pi/2 ≤ t ≤ 3pi/2   b. Describe the motion of a particle with position... more
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10/07/16

Find Relative Max and Relative Min
F(x) = 18cos(2x) + 18x  on the interval (0,2pi)
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10/07/16

Alexa drew AB on a piece of a paper, and then folded the paper
Alexa drew AB on a piece of a paper, and then folded the paper so that Point A was on Point B. She claims the crease forms right angles with AB. In two or more complete sentences, explain why Alexa... more
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10/06/16

how to find the exact value of when the second derivative equals 0
Let f(x) = 9xe^x(a) Find the exact value of x so that f ''(x) = 0. so I found the second derivative to be f''(x)=9e^x(x+2). I plugged in zero and got 18, but it said that was wrong. Is there... more
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10/04/16

Find the inverse function of a half parabola
Help me find the inverse function of a half parabola -2x^2 + x - 2, where x > 1/4the homework system says f^(-1) (x) = -1/4 + √(-(x + 15/8) / 2) is not correct
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10/04/16

find the value of lim x-->4 ((f(x)-f(4))/(sqrt(2)-2))
Calculus homework, I don't understand the question though ):   It is a division, where (f(x)-f(4)) is the dividend and (sqrt(2)-2) is the denominator   The answer Choices are: 1. limit = 4... more
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10/04/16

question is based on time and work relation.
2 men and 7 boys can do a piece of work in14 days, while 3 men and 8 boys can do it in 11 days. Then find in how many days would 8 men and 6 boys do the work three time as big as the first?
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10/04/16

prob stats
How many different? 10-letter words? (real or? imaginary) can be formed from the following? letters?S, Y, E, N, A, R, Y, D, D, D
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10/04/16

Find an equation of the plane.
Find an equation of the plane.The plane that passes through the point (2, 4, 5) and contains the line x = 5t, y = 2 + t, z = 4 − t
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10/02/16

Linear algebra 3
Given the set of all vectors in R^3 such that ||U||∞ < 10 , does this form a subspace of R^3 ?
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09/30/16

for what value of c will the funciton x^6+9x^4+26x^2 +C have real roots?
I have the answer of -2, I just don't know how they got it.
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09/30/16

he set of ordered pairs represents a function. Write a rule that represents the function. ?(0?,0?), ?(1?,5?), ?(2?,40?), ?(33?,135?), ?(4,320?)
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09/30/16

Limit with sin (without hopital)
limx-->2 ( sin(2x-4)/(x-2)
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09/30/16

How do I do this limit (without hopital)
limx--> 0+ (1/sqrtx) - ( 1/sqrtx^2+x) Please show me steps. Im really confused. 
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09/30/16

Finding convergence/ divergence of a series- Calculus three
summation of (1/(n)^1/2)-(1/(n+1)^1/2)   Does this converge or diverge? I would assume it diverges but online sources say it converges with the comparison test. I don't see how that would work.   
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09/29/16

Find all solutions of the equation sqrt(3)cos(x)=sin(x)+1 in the interval [0,2pi)
Been stumped on this qusetion for a while, anyone got a simple step-by-step solution?
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09/29/16

Ideal and subring
please I want help with that     Consider the ring Mn(R) ofn x n matrices over R, a ring with identity. A square matrix (aij) is said to be upper triangular if aij = 0 for i > j and strictly... more
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09/29/16

Use difference quotent to estimate the instantaneous rate of change in the volume of sphere when given the radius.
To make a snow man, snow is being rolled into the shape of a sphere. The volume of a shpere is given by the function V(r)=(4/3)πr3, where r is the radius in cm. Use difference quotent to estimate... more
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09/29/16

Operations with Functions - h(x)=-2x,g(x)=3x+1 Find (h+g)(x/2)
The answer choices are A)x^2+1 B)x-1 C)x+2/2 D)-x+2/2   I picked A as the right answer but I'm not sure. 
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09/29/16

Derivatives of Inverse Functions
"Suppose g is the inverse function of a differentiable function f, and G(x)=1/g(x). If f(3)=7 and f'(3)=1/9, find G'(9). FInd G'(7)."   Please show all steps- thanks so much!!
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09/29/16

about 2.5% of chicago cab drivers are women. suppose 125 of thecity's cab drivers are randomly selected. Let x be the number of women in the sample.
find the binomial distribution find the mean standard deviation p (x=8)
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09/28/16

polar coordinates
Write in polar coordinates all 8-th roots of unity. Find all pairs of roots r1 and r2 such that r1 = r2
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