02/22/16

For a random variable X with density ce^x, 0 = x = 2, find the constant c and find EeX
 find the constant c and the expected value of x 
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02/18/16

Quadratic function y=x^2+8x+12 .turn it in as factored form
Quadratic function y=x^2+8x+12 .turn it in as factored form? And plot x on the horizontal axis.
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02/17/16

the volume of the cube is a function of the side length. does this situation represent a linear or nonlinear function?
a cube has a side length of s meters. the volume of the cube is represented by the expression s cubed. the volume of the cube is a function of the side length. does this situation represent a... more
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02/15/16

There are 10 contestants in a race. You want to determine how many ways there are for a 1st, 2nd, and 3rd place winner to place
. Do NOT type a number. Just tell me whether you will calculate a Permutation (P) or Combination (C). Just type the letter. Example: If you think it's a Combination, type: C
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02/12/16

Survey Statistic Problem
I have no idea how to solve this. Someone please explain to me.   427 different women were randomly selected and asked what they buy online, and 162 of the women says clothes.    If 10... more
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02/10/16

what is the number of posible outcomes when tossing 6 coins at once?
What is the number of possible outcomes when tossing 6 coins at once?  
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02/03/16

statictics
an inspector must select three tests to perform in a certain order on a manufactured part.He has a choice of 9 tests.How many ways can he perform 3 differnt tests?
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02/02/16

Help please?!?
A ball player hits a home run, and the baseball just clears a wall 20.0 m high located 117.0 m from home plate. The ball is hit an an angle of 35° to the horizontal, and air resistance is... more
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02/01/16

Speed of light and rotations per minute is very small objects
I have an object/sphere that is 4 millionth of a meter in diameter and is rotating per minute at 600 million rpm. My question is how fast is it moving with respect to the speed of light?
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02/01/16

A model rocket is launched from the roof of a building. Graph the function a) when will the rocket be at 20 feet?
The height of the rocket is given by the function h(t)=-16t^2+v_0 t+h_0, where v_0 is initial vertical velocity of 55 ft/sec and h_0 is initial height of 4 feet.   b) when does the rocket reach... more
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01/30/16

An object is pulled across a rough surface with a force of 10 N. If the object moves with a constant velocity and the surface has a coefficient of kinetic frict
An object is pulled across a rough surface with a force of 10 N. If the object moves with a constant velocity and the surface has a coefficient of kinetic friction of 0.2, what is the magnitude of... more
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01/27/16

Viewing a polynomial's integer values
I'm working on a project that requires polynomials meeting at integers. I currently need a polynomial that goes through the point (70,302), has a degree above 4, and has at least one other point... more
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01/24/16

someone throws a ball upwards with a velocity of 11m/s from a height of 1.2m. For what times is the height of the ball greater than 3m?
Here is the height formula   h= -4.9t2 + v0t + h0
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01/20/16

Describe the relationship between the graphs of f and g. F(x)=cos x & g(x)=-3 cos x also f(x)=sin x g(x)=2+sin x. How am I suppose to answer these?
I have the describe the relationship between the graphs of F and G?? I don't fully understand?
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01/20/16

Only 7 our of the 9 children in the town were actually good all year. If there are 189 children in the town, how many were actually good?
I dont understand how to do it at all to be honest
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01/15/16

Differential Equations Model
Given the equation for sprinter velocity, dv/dt = M(u - v)/t   This is an ODE of 1st order and it's LINEAR, right?
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01/13/16

A 0.3m x 0.5m x 0.02m book lying on its title face exerts a pressure of 0.5 pascals. What is its mass?
Show work please
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01/13/16

Factor 54+27 by using GCF
I dont get it!!
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01/13/16

If Scott has 5 green marbles, 2 purple marbles, 8 red marbles adn 6 green marbles, what is the probability that he will not draw a blue marble?
it is a hard question
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01/12/16

Two spheres have identical charges and are 0.75 m apart. The force between them is 0.30 N. What is the magnitude of the charge on each sphere?
Please help!
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01/10/16

convert the following parametric equations into a rectangular equation x=-2sinT y=2cosT
convert the following parametric equations into a rectangular equation x=-2sinT y=2cosT
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01/06/16

2sqrt4y-2sqrt9y+10sqrty
How to work the problem it's a radical expression so "sqrt" is √ square root
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01/05/16

AP Physics (rotational motion question)
The drum shown in the figure has a radius of .4 meters and a moment of inertia of 2.3 kgm^2 about an axis perpendicular to it through its center. The frictional torque at the drum axle is 3 Nm. A... more
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01/05/16

Only need a quick answer in standard form. thanks, Algebra 2 equation
Find an equation of the line passing through (3, 5) and parallel to the line x-3y=10
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01/03/16

In one school, 5/6 of the sixth-graders take a foreign language. Of these students 2/5 take French. What fraction of students take French?
Confused on how the steps to get the answer 1/3, so kind of need to see this to explain to daughter where she went wrong.
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