10/16/15

Superman's speed?
I have a feat where he travels to Earth from the "end of the universe". I'm wanting to low-ball this to what we know. So what's the acceleration of Superman if he went from the observable universe... more
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10/16/15

-2, 1 - 5i; degree 3 polynomial
I don't understand how to incorporate the 1-5i to get a third degree polynomial.. I know that -2 is (x+2) but I am stumbling over 1-5i. Please Help
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10/14/15

Find dy/dx by implicit differentiation
cos(x)e^x  = 1 + sin(xy)
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10/14/15

Find dy/dx by implicit differentiation :
tan ^-1 (yx^2) = x +xy^2     p215, #17
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10/11/15

Which answer is true
Suppose that for a function f, the equation f(x)=0 has not real-number solutions.   Which of the following must be true?   A. f(x)>0 for all x in the domain of f B. f has no... more
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10/09/15

The length of a rectangle is 2 less than twice the width and the perimeter is 80. Find the dimensions of the rectangle
The length of a rectangle is 2 less than twice the width and the perimeter is 80. Find the dimensions of the rectangle
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10/09/15

An unfair coin with Pr[H] = 2/3 is flipped.
An unfair coin with Pr[H] = 2/3 is flipped. If the flip results in a head, then a marble is selected from an urn containing 5 red, 2 white, and 6 blue marbles. If the flip results in a tail then a... more
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10/06/15

Can you help with this Algebra 2 word problem
The word problem is: Roses sold for 12 pence each and daffodils sold for 4 pence each. If Jim bought 35 flowers and spent 300 pence, how many daffodils did he buy?
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10/04/15

Two trains problem
The evil villain in an action movie is using a computer to control two trains traveling toward each other on the same track. If  his demands for ransom aren't met with "t" amount of time, the... more
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10/02/15

How many pounds of candy that sells for $0.71 per lb must be mixed with candy that sells for $1.25 per lb to obtain 8 lb....
How many pounds of candy that sells for $0.71 per lb must be mixed with candy that sells for $1.25 per lb to obtain 8 lb of a mixture that should sell for $0.91 per lb?    $0.71-per-lb candy: ___... more
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10/01/15

the probability that it'll rain 40% over a 3 day period. what is the probability it will rain at least one of the 3 days?
Algebra 2. struggling again.
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10/01/15

An unfair coin with...
An unfair coin with Pr[H]=0.2 is flipped. If the flip results in heads, a student is selected at random from a class of 12 boys and 15 girls. Otherwise, a student from a different class containing... more
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10/01/15

Physics Problem: Magnitude of the gravitational force
A 1,120-kg satellite is in a circular orbit around a planet. The satellite travels with a constant speed of 3,960 m/s. The radius of the circular orbit is 3.80 × 10^6 m.Determine the magnitude of... more
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09/29/15

periodicity of functions
f(x)={x}  {x}=x-[x] Find the periodicity of the functions :  f(x)={ax} and f(x)=a{x}
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09/28/15

Probability homework help
about independent events E and F in a sample space S, but assume that Pr[E]=0.45 and Pr[F]=0.3. Compute the following conditional probabilities: (1) Pr[E′|F] (2) Pr[E|F′]
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09/27/15

Statistics Probability Question
In a neighborhood of 43 households, 17 subscribe to the New York Times, 14 subscribe to the Wall Street Journal and 5 subscribe to both. What is the probability a randomly selected household... more
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09/27/15

What is the scientific notation for 74 million
My homework for math class 
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09/27/15

Find the number of solutions in integers(x,y) of the equation x^2 y^3=6^12
help..pls.. number theory..
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09/26/15

a.Find f(2) and g(2). b.Find f(7) and g(7). c. Is there any value of x that is in the domains of both f and g such that f(x) and g(x) are not equal?,
Consider the functions f(x)= (x*x)-1/x+1 and g(x)= x-1
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09/26/15

Using the empirical rule
Suppose that the mean height of 10th grade boys is 69 inches with a standard deviation of 2 inches and that it follows a normal distribution. Using the empirical rule, determine the percentage of... more
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09/26/15

time speed and distance
walking at 5/6 of its usual speed a train is 10 minutes too late find its usual time to cover the journey   explain me
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09/26/15

time speed and distance
a man traveled from the village to the post office at the rate of 25 kmph and walked back at the rate of4 kmph if the whole journey took 5 hours 48 minutes find the distance of the post office from... more
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09/25/15

What are the steps in drawing the Contour maps for a differential equation having two stationary points..??
I have a function z= x^(3) - 6x^(2) - y^(2) and I found the stationery points to be at (0,0) and (4,0). I just need to know the procedure of drawing the contour map for this function.
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09/25/15

Five men and six women line up at the checkout counter at a store. In how many ways can they line up if we consider only their gender
I need help solving this question. 
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09/24/15

Possible Statistical Assistance
Could "someone, anyone" tell me what the probabilities are Please!!!!   Provide an example of what differentiates a “Probability” from a “Probability Distribution”. In this example identify both... more
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