02/06/15

Additional Info Provided: Suppose 750 students are admitted. What is the chance that the class size will be at least 720 students?
Hello, I'm really struggling with how to approach this problem. Thank you for any advice.   *Edited Original Question*    Sorry.....you are absolutely correct in that I didn't provide enough... more
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02/02/15

Phases and phase changes
A drop of water on a kitchen counter evaporates in a matter of minutes. However, only a relatively small fraction of the molecules in the drop move rapidly enough to escape through the drop's... more
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01/31/15

Related Rates
A lighthouse is located on a small island 3km away from the nearest point P on a straight shoreline and its light makes four revolutions per minute.   How fast is the beam of light moving along... more
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01/31/15

Find steady state solution
The governing equation: ∂Ω/∂t = (∂2Ω/∂x2)-DH(∂Ω/∂x) Find the steady-state solution Ω(x) from the boundary conditions: Ω(0) =1,Ω(1)=0
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01/30/15

How will the yield of hydrogen change if the equilibrium is disturbed
Endothermic reaction for the production of hydrogen gas CH4(g) + H2O(g) → CO(g) + 3 H2(g)?How will the yield of hydrogen change if the equilibrium is disturbed by a.Adding a catalyst. b. Increasing... more
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01/21/15

Urgent, The Fundamental Theorem of Calculus !
Use the Fundamental Theorem of Calculus to find the derivative of  f(x)= ∫ ((t^2/4)-1)^5 dt, upperbound-x^2, lowerbound= 4
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01/19/15

What is the wavelength and what is the frequency?
Standing waves are produced in a stretched rope. If the distance between successive nodes is 0.04m, what is the wavelength? If the wave travels with a speed of 84m/s, what is the frequency?
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01/19/15

Find the amplitude, period, and frequency of the resulting Simple Harmonic Motion.
A body of mass 5 kg is suspended by a spring, which stretches 0.1 m when the body is attached. It is then displaced downward as additional 0.05m and released. Find the amplitude, period, and... more
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01/19/15

I don't know how to solve this? Am I suppose to use a specific formula?
Shelby is canoeing in a river. She travels 4 miles upstream and 4 miles downstream in a total of 5 hours. In still water, Shelby can travel at an average speed of 2 miles per hour. To the nearest... more
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01/15/15

she divided them equally among the eleven there would be eight left over. If she divided them equally among the thirteen there would be three left over. What is
I need help
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01/09/15

What is the Velocity of current ?
A boat of mass 300 kg was being drifted by the current of the river i.e. the boat was moving at the same speed as the current. A boy with mass of 24 kg was standing still on the boat. Suddenly that... more
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12/30/14

Write a polynomial with zeros 2+i and -4?
Write a polynomial with zeros 2+i and -4?
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12/28/14

Division of length segments of a square by an inscribed square.
There are two squares S1 and S2 with areas 8 and 9 units respectively. S1 is inscribed within S2, with one corner of S1 on each side of S2. The corners of the smaller square divides the sides of... more
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12/26/14

help with gas perfect question ?
The photosphere of the Sun is a gaseous layer about 550 km thick. The temperature in the photosphere falls from 6500 K at the bottom to 4300 Kat the top. The pressure at the bottom of the... more
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12/26/14

can someone solve this ( cube floats question)
An open tank with square horizontal cross-section, of constant side length L, contains liquid of uniform density ρ and depth H. A solid cube ,of mass m and side length l (where l<L), is placed... more
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12/24/14

finding the parabolic path
2. A projectile follows a parabolic path whose height, in meters, is given by the function f(x) = -x^2 + 2x + 2. Find the maximum horizontal distance that the p
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12/24/14

find the number whose 7th part multipied by its 11 part gives 1,232
explain sir
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12/12/14

what is the weight of a 1200N man on earth ? whats his mass ?
I do not know how to solve this and I need help,
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12/10/14

Physics Mechanics Problem. PLEASE help!!
A ball of mass m is dropped from a height of h1 and rebouns to a height of h2. The ball is in contact with the floor for a time interval of t.  a) Show that the average net force on the ball is... more
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12/10/14

It takes janie 16 min. to clean after a party. if her husband jonnie helps it takes 10 min. to clean the den. how long would jonnie take to clean by himself?
It takes janie 16 min. to clean the den after a party. if her husband jonnie helps it takes 10 min. to clean the den. how long would jonnie take to clean the den by himself? Equation.
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12/09/14

Use linear regression to analyze the relationship between time since introduction and the natural log of snake population size.
Years after Introduction(X)       Number(Y)        (Xi - X)    (Yi - Y)    (Xi - X)(Yi - Y) 1                                                  4                  -4.5       -167.3          ... more
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12/09/14

the x and y axes are represented by horizontal and vertical lines. can they be represented by equations?
the x and y axes are represented by horizontal and vertical lines. can they be represented by equations?
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12/09/14

infinity series?? each one is hard for me :(
Find the sums of the following infinite series. Write your answer as a reduced fraction: 0.58 + 0.58^2 + 0.58^3 + ... Find the sums of the following infinite series. Write your answer as a... more
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12/07/14

Stats Probability Question. Find P(A|X), P(B|X), and P(C|X).
Suppose we have three mutually exclusive events A, B, and C such that P(A) = .4, P(B) = .4, and P(C) = .2. Also, for some event X, P(X|A) = .75, P(X|B) = .5, and P(X|C) = .5. Find P(A|X), P(B|X),... more
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12/03/14

simple math problem
Kelsi can type a report in 3 hours and Ashley takes 4 hours. How long will it take the two of them typing together?
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