03/09/14

Find the minimum value?
Find the minimum value of the slope of the curve y=x^5+x^3-2x.   Answer: -2   Please show all your work. 
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03/07/14

Concave Mirrors
Light from a star is collected by a concave mirror. How far from the mirror is the image of the star if the radius of curvature is 150 cm?
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03/07/14

What is the focal length of the mirror, the length of the image, and the magnification?
When a butterfly of body length 4.2 cm is 10 cm from a concave mirror, its image is 15 cm behind the mirror.
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03/06/14

Chemistry Help Please!
For the reaction: CO(g)+NH3(g)<->HCONH2(g) The equilibrium constant is: K=0.207 at 400 K.If a reaction vessel is filled with initial concentrations 2.15M of CO and 2.70M of NH3 and the... more
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03/05/14

find the dimensions of the carton with that value that uses the least amount of material
a carton has a large rectangle with square bottoms that have a volume of 6000 cubic inches
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03/04/14

Find slope and concavity (if possible) at the given value of the parameter ?
1, x = t2 + 5t +4 , y= 4t , t=o 2, x = cosθ, y = 3sinθ , θ=0  
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02/26/14

im having trouble with some math problems can you help
the question is write the equation of the hyperbola with the given foci and vertices.  foci:(6,0), (-6,0)  vertices: (4,0)(-4,0)
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02/24/14

Air Resistance
1. Give three factors that affect the amount of air resistance an object experiences, and describe how each factor influences air resistance (will the air resistance go up, or go down if that... more
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02/22/14

Find the area?
The tangent line to the graph y=e^(2-x) at the point (1, e) intersects both coordinate axes. Find the area of the triangle formed by this tangent line and the coordinate axes?   Answer: 2e    
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02/21/14

Answer the following questions ( true or false)
Answer the following questions (true or false) 1. Arg (0) is undefined  2. Arg z1/z2= Arg z1-Arg z2, if z1 ≠0, z2≠0 3. Arg z= Arg z + 2pieK (K=0, ±1, ±2, ±3) and if z ≠0 4. Arg z1z2= Arg z1+... more
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02/19/14

how do you find the value of x in this matrix equation?
2    4    4 2    x    -10   =740 -5   9    3
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02/18/14

find the coordinates of the points at which the line with equation y= 3x - 1 intersects curve with equation y^2 - xy = 15
simultaneous sum
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02/09/14

You toss a coin 50 times and find that the outcome was heads 20 times and tails 30. What is the theorectical probability that the next toss will have an outcome
You toss a coin 50 times and find that the outcome was heads 20 times and tails 30. What is the theoretical probability that the next toss will have an outcome of tails?
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02/08/14

Logarithms
Given that log2x=p and log4y=q, express x2y in terms of p and of q.       Ans: 22p+2q     Thank You :)
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02/06/14

the expression 2x^3 - x^2 +ax+ b gives a remainder 14 when divided by (x-2) and a remainder -86 when divided by (x+3).find the values of a and b..
it is yet another a remainder theorem problem i request u to solve it....thankyou very much
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02/05/14

The full question is under the description.
2 people on bikes riding towards eachother. One is riding at 15 mph and the other is riding at 20 mph. the dog is running back and fourth between the 2 bikes at 38 mph. at what point would the dog... more
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02/04/14

graph rational function
The following rational function  f(x)=(2x-1)/(x-1) has horizontal asymptote y= has vertical asymptote x= y intercept is y= x intercept is x=  
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01/29/14

what is the speed of the river current
a motor boat can go 24 miles downstream in the same amount of time that it takes to go 12 miles upstream. the boats speed in the still water is 12 mph. 
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01/29/14

Find the center verice foci and asyptote of the hyperbola?
x^2/36 - y^2/64   Do i have to squre 36 and 64 to get the vertex and foci?
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01/24/14

The area of a circle is 16 pi square inches. What is the area, in square inches, of the largest square that can be drawn within this circle.
I don't know how to start.  
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01/21/14

What number, between 5 and 5000, are we able to divide with no decimals or remainder for the problem below?
A rich collector of gold coins has left a will giving instructions stating how his coins are to be distributed to his butler and family (5 children and 5 grandchildren) after his death. His... more
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01/21/14

help solving slope intercept form of line
I need help on solving this question.   Find the equation in slope intercept form of the line that is the perpendicular bisector of the segment between (-3,4) and (3,-8) and list the... more
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01/17/14

If the average is flat yet the median is increasing, what does that say about a series of numbers
 If the average is flat yet the median is increasing, what does that say about a series of numbers.    
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01/16/14

I Need MAJOR HELP i dont know how to do any of these our long term sub can not explain to me in away i understand please help!
Okay so my sheet say, "write the equation for each parabola in standard form and finf the vertex of the parabola"   My Equations are like this:   1.  y=(x+4)(x-2)  
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01/12/14

help in solving by completing the square
I am trying to solve 2x^2 + 3x =20 by completing the square.   I rewrote it to be 2x^2 - 3x + 20 = 0   then started with 2x^2/2 + 3x/2 + 20/10 =   x^2 - 3/2x + 10 = 0   how do I continue?
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