11/15/15

Evaluate the following integral using any Vector Calculus method
Evaluate the following integral using any Vector Calculus methodThe integral with bounds C; [(4+eyz)i+(xzeyz+2yz)j+(6z2+xyeyz+y2)k] dot dr, where C is the part of a curve on x5+y3z=25 from (1,2,3)... more
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11/15/15

The seventh term, u7, of a geometric sequence is 108. The eighth term, u8, of the sequence is 36.
 The seventh term, u7, of a geometric sequence is 108. The eighth term, u8, of the sequence is 36.   (a) Write down the common ratio of the sequence.    (b) Find u1.   The sum of the first k... more
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11/14/15

area of sphere
Had the diameter of a sphere been decreased by 2cm, its surface area would have diminished by 113.04 cm2 . Find the surface area of the sphere.
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11/14/15

Calculus Logarithms - Needs redone. Answered incorrectly
differentiate y = (x2+1)e((-x^10)+3x)
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11/14/15

Find all roots for P(x)=0; P(x)= x^3+5x^2+2x-8
I need need to find all the possible roots for P(x)=x^3+5x^2+2x-8 when P(x)=0.
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11/14/15

four less than three times a number is the same as five times a number. Find the number
four less than three times a number is the same as five times a number.  Find the number
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11/13/15

Evaluate the following indefinite integral
Evaluate the following indefinite integral:   ∫1/(x2√1-x2) dx
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11/13/15

Evaluate the following indefinite integral
Evaluate the following indefinite integral:   ∫cos2(3x) dx
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11/13/15

Evaluate the following indefinite integral
Evaluate the following indefinite integral:   ∫cos3x*sin6x dx
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11/13/15

Please help me with this question.
Differentiate y = csc(x) − cot(x).
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11/12/15

Find the volume of the solid
Find the volume of the solid generated by revolving the region in the first quadrant bounded by the graphs of y=sinx/x , x=pi/2 , and the x~axis about the y~axis.
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11/12/15

dont understand
indentify the intereval(s) on [0,2π] for which the sine function is increasing and cosine function increasing
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11/12/15

Evaluating with Vectors
For the vectors u=(-3,-2) and v=(4,-2), evaluate the following:   a) The magnitude (length) of vector u (simplified radical form) b) A unit vector in component form which has the same direction... more
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11/09/15

A 25 kg mass is lowered by a rope. If the velocity of the mass is decreasing at a rate of 5 m/s^2, what is the tension in the rope?
I did  T = mg - ma and got my answer as 125N.    The answer key says its 375N.  Why do I do T = mg + ma if the mass is being lowered?
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11/09/15

Which equations represent the line that is parallel to 3x - 4y = 7 and passes through the point (-4, -2)? Check all that apply.
I just want to know the answer
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11/09/15

3b+b/2-2=180 what does B equal?
3b+b/2-2=180 what does B equal?
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11/09/15

Need Help with Last Homework Question
Find the constant of variation k for the stated condition. y is directly proportional to x and inversely proportional to the squareroot of w, and y= 1/7 when x=6 and w=6. K= ?
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11/08/15

Determine the half-life of a sample of robindium that decays to 25% of its original amount after 2.4 hours
Determine the half-life of a sample of robindium that decays to 25% of its orginal amount after 2.4 hours
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11/08/15

Jackpot set at $190,000,000 expected value
Imagine you are doing research for a term paper in your English class and you have chosen the topic to be “The Benefits and Costs of My State's Lottery”. You find the following information for your... more
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11/08/15

A linear algebra question, please help!
Given the matrix A and the vector b below, define the transformation T : R3 → R3 by T (x) = Ax. Determine whether or not b is in the range of T. If so, find a vector x such that T(x) = b.       1... more
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11/06/15

find the domain of the function f(x)=log(x-2).
1. find the domain of the function f(x)=log(x-2).   2. evaluate log8^4 analytically.   3. use a graphing utility to solve the equation e^-x=3 lnx
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11/06/15

What is the Frequency?
Question #1 Violet light has a wavelength of 4.10 x 10-12 m. What is the frequency?     Question #2 Calculate the energy of a gamma ray photon whose frequency is 5.02 x 1020 Hz?   Question #3... more
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11/05/15

geometry side restriction of x
Triangle ABC: side AB: not given. Side BC: x+10. Side AC: 2x+4. Angles: Angle A is greater than Angle B. What are the restrictions on x?
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11/05/15

optimization problem help!
A box is constructed out of two different types of metal. The metal for the top and bottom, which are both square, costs $5 per square foot and the metal for the sides costs $4 per square foot.... more
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11/04/15

A parabola has its vertex at (2, 1) and crosses x-axis at (1, 0) and at (3, 0). Which of the follwoing equations below has this parabola for its graph?
A. y= 1 - (x-2)2 (that's supposed to be to the second power) B. y= 1 + (x+2)2 (to the second power) C. y= -1 - (x+2)2 (to the second power) D. y= -1 - (x-2)2 (to the second power)
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