06/08/13

How can i solve this by factoring?
5x^2 +8x - 69=0 x=?
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06/08/13

What is the minimum y value on the graph of y= f(x)
f(x)=x^2+8x - 4
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06/08/13

What's the vertex of this parabola in a ordered pair.
f(x) = x^2 - 10x - 1
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06/06/13

Help me with my future?
Where are physics laboratories usually located? Inside the colleges? Can you write the agreement saying that once your invention succeeds using their materials then you'll give them some profits of... more
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06/06/13

show how events are not independent
A is the event that Ny Giants football team will qualify for the championship. B is the event that they will win against Minnesota. If (A)=52% , P(B)=79% , AND P(A and B) is 4% . a.show how the... more
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06/06/13

Determine whether the line integral F*ds is path-independent?
Let R be the unit cube defined by 0<=x<=1, 0<=y<=1, 0<=z<=1, and let F(x, y, z)=(x+yz, y+xz, z+xy). Determine whether the line integral F*ds is path-independent.
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06/04/13

how do you find intersections with the functions?
I understand parametric equations for the most part, but i always have trouble with finding their intersection points. I would be glad for a second opinion. Thanks so much!
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06/04/13

How many square miles are in one mile?
A person can see for a distance of 12 miles.  How many square miles can he see? Ok.  How many square miles are in one mile?
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06/02/13

Find the rate of change?
Find the rate of change of f, df/dt, along the parametric curve x(t)=2t-1, y(t)=3-2t^2 at t=1. The answer is -8 and I need to find df/dt(1).
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05/29/13

probability question- In a proposed business venture, a businesswoman estimated there is a 55 percent chance that she will make $61000 and a 45 percent chance t
In a proposed business venture, a businesswoman estimated there is a 55 percent chance that she will make $61000 and a 45 percent chance that she will lose $66,000. Determine her expected value.  
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05/29/13

Needed help with this math problem.
Does f(x) represent a polynomial function? f(x)= 1/x^4 - 1
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05/28/13

Find the directional derivative?
Find the directional derivative of f(x, y)=xye^(-xy^2) at the point (1, 1) in the direction <2/sqrt(5), 1/sqrt(5)>. f=<ye^(-y^2), xe^(-2xy)> f(1, 1)=<e, e^-2> u=<2/sqrt(5),... more
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05/28/13

i dont know its answer
X2+X-6
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05/27/13

Assume f(x)=4x-8 and g(x)=5 what is the value of (f+g)(2) this is hard. ive tried, but i cant do this.
Assume f(x)=4x-8 and g(x)=5 what is the value of (f+g)(2) this is hard. ive tried, but i cant do this.
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05/20/13

Find the work done by the force?
A constant force F=<-1, 2, -5> acts on a particle as it moves from A(2, 4, 1) to B(-2, 1, 3). Find the work done by the force. I have trouble for finding the dot products.
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05/19/13

I need help for two questions to solve 4^3x=8 & 4^2x=7 by graphing?
I keeping getting it wrong and don't know what else to do.
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05/18/13

Find a potential function for the vector field?
Find a potential function for the vector field f(x, y)=2x/y i+(1-x^2)/y^2 j.
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05/17/13

May you please help me with word problems?
A candy shop manager mixes M&M's worth $2.00 per pound with trail mix worth $1.50 per pound to make 50 pounds of party mix worth $1.80 per pound. How many pounds of each she should use? Can... more
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05/16/13

prove (cosx-sinx)=1-2cosxsinx
How can you prove this?
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05/15/13

What was the ball's initial speed?
A spring gun at ground level fires a golf ball at an angle of 45 degrees. The ball lands 10 m away. a) What was the ball's initial speed? b) For the same initial speed, find the two firing angles... more
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05/15/13

absolute temperature means
absolute temperature is at which-a.water solidifies b.all gases become liquid c.motion of molecules become minimum d.everything solidifies  
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05/14/13

Find value = 'F'
I'm struggling with finding the correct formula for this problem. Can you please help find the value of 'F' and give me a formula: (1400-1353)/((1400*2.75)-(1353*F)) = 0.8   F = Thanks, Malcolm
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05/14/13

X square + y square= 9. Is it circle, ellipse, parabola, hyperbola
choose the correct conic section to the equation x square + y square =9
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05/12/13

word problem
Find the time required for money invested at an annual rate of 6% to double in value if the investment is compounded monthly. Round to the nearest hundredth of a year. (Hint: you will need to... more
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05/11/13

Find dz/dy at (1, ln 2, ln 3) if z(x, y)?
Find dz/dy at (1, ln 2, ln 3) if z(x, y) is defined by the equation xe^y+ye^z+2lnx-2-3ln2=0.
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