11/17/13

Find a nonzero matrix?
Find a nonzero matrix A for which A^2=0.   Please help me with steps. Thanks.
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11/17/13

What is its resulting acceleration?
Two 5 kg masses are attached to opposite ends of a long massless cord which passes tautly over a massless frictionless pulley. The upper mass is initially held at rest on a table 50 cm from the... more
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11/17/13

how to find this equation in intercept form (-2,4)and(3,-1)
how to find this equation in intercept form (-2,4)and(3,-1)
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11/16/13

What's the downward acceleration?
Two masses are connected by a light cord which is looped over a light frictionless pulley. If one mass is 3.0 kg and the second mass is 5.0 kg, what's the downward acceleration of the heavier mass?... more
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11/16/13

What's the tension?
Two masses 5.0 and 7.0 kg are originally at rest on a frictionless surface. The masses are connected by a light cord. A second cord is attached to the 7.0 kg mass and pulled with a horizontal force... more
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11/16/13

Why the Polygon Interior Angle Sum Theorem does not apply for concave polygon?
Why the Polygon Interior Angle Sum Theorem does not apply for concave polygon?   Apparently this theorem should hold true for simple concave polygon, but your website states that "As seen in the... more
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11/15/13

Quadratic Functions.............................
Find all fixed points for the following functions by setting the function equal to x and solving the resulting equation for x   (1) f(x)=x^2-9x+25   Application of quadratic equation and... more
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11/13/13

Compute A^2 and A^3.
Compute A^2 and A^3. Make a prediction for A^5 and A^n:   A=[1, b, 0, 1] and A=[2, 2, 0, 0].   The first row: 1, b. The second row: 0, 1.   The first row: 2, 2. The second row: 0, 0.    
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11/13/13

Width of the crater in meter
Points A and B are in opposite sides of a lunar crater. Point C is 45 meters from point A. The measure if angle BAC is 114 degrees and the measure of angle ACB is 45 degrees. What is the width of... more
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11/13/13

This is solve for x:4^2x=8^3x-4
I need help for the above question please :4ˆ²Χ=8^3Χ-4
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11/12/13

Find and solve?
The parabola y=a+bx+cx^2 goes through the points (x, y)=(1, 4) and (2, 8) and (3, 14). Find and solve a matrix equation for the unknowns (a, b, c).   a+b+c=4 a+2b+4c=8 a+3b+9c=14   a=2, b=1,... more
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11/12/13

im needing help with algebra
how would you factor: 6x^2-x-2 x^2-3x+2x-6 81y^2-36
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11/11/13

Find the Binomial Series
Find the Binomial Series of g(x) = 1/(1+5x^2)4
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11/11/13

Find the Binomial Series
Find the Binomial Series of f(x) = (1-x3)-2/3
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11/09/13

What's the net force?
A person pushes a block of mass M=6.0 kg with a constant speed of 5.0 m/s straight up a flat surface inclined 30 degrees above the horizontal. The coefficient of kinetic friction between the block... more
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11/09/13

What is the coefficient of kinetic friction?
A 22 kg suitcase is dragged in a straight line at a constant speed of 1.10 m/s across a level airport floor by a student on the way to Mexico. The individual pulls with a 1.0x10^2 N force along a... more
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11/09/13

Horizontal stretches/compression?
For horizontal compressions, I know you do it if x is greater than 1, but do you divide or multiply the x value by the c value? Why would it be a vertical compression of c?   So if you had... more
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11/09/13

What is the force?
A spaceman of mass 80 kg is sitting in a spacecraft near the surface of the Earth. The spacecraft is accelerating upward at five times the acceleration due to gravity. What is the force of the... more
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11/09/13

Find the integral?
Find ∫ (sin(6x))2(cos(6x))2 dx.
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11/09/13

the diagrams shows 4 circles of equal radius touching each other.If the radius of each circle is 12 cm ,calculate the area of shaded region
there is no option here for making diagram is it?  
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11/08/13

Find dy/dt?
  Find dy/dt, given that y=x^2+4x and x=cos(3t).
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11/08/13

f(x)=x^2+7 need the domain and range of the function in interval notation
f(x)=x2 +7   need the domain and range of the interval notation  
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11/08/13

differentiate by using the chain rule
y=(2׳−7)^4
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11/07/13

using statements and proofs how to prove that in parallelogram abcd that is cut by a diagnoal line bd that the perimeter of abc is equal to the perimeter of adc
It is a parallelgram that is cut in half by a diagnoal line making two triangles
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11/06/13

What 3 by 3 matrix E?
What 3 by 3 matrix E multiplies (x, y, z) to give (x, y, z+x)?
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