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x^x = 2x |
2007-02-22 |
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ramsay pose la question :
This has been bugging me for ages. How do find both real solutions to x^x = 2x? Obviously I have x=2, and there's another at about 0.35, but I can't work it out properly. Any help?
Penny Nom lui répond. |
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The size of a TV screen |
2007-02-22 |
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katie pose la question :
The ratio of height to width for a tv screen is 9 to 16. How high is a screen that is 30 in. wide? I don't know how to work this, we have to show our work.
Gabriel Potter and Penny Nom lui répond. |
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Similar triangles |
2007-02-21 |
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Vivienne pose la question :
The lengths of the sides of a triangle are 8, 15, & 17. If the longest side of a simlar triangle is 51, what is the length of the shortest side?
Stephen La Rocque and Penny Nom lui répond. |
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Surface area of a triangular prism |
2007-02-21 |
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Katrina pose la question :
What is the formula to finding the surface area of a triangular prism?
Gabriel Potter lui répond. |
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A limit |
2007-02-21 |
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Amanda pose la question :
I have tried to work out this problem by using the properties of limits and the conjugate rule to simplify but I am not real sure how to approach the problem or what they are asking for any help would be greatly appreciated. Amanda
Penny Nom lui répond. |
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Diagonals of a rectangular grid |
2007-02-21 |
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matthew pose la question :
in a rectangular grid 3600x288 (or any large rectangle with an even number of units) how can I determine the number of vertices a diagonal line will pass through?
Stephen La Rocque and Penny Nom lui répond. |
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A circle tangent problem |
2007-02-21 |
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Jason pose la question :
Please help me to solve this problem. Thank you very much. Find the equation of the circle tangent to 3x+y+14=0 and x+3y+10=0 with radius squareroot of 10.
Stephen La Rocque and Penny Nom lui répond. |
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What jobs involve using conics? |
2007-02-21 |
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Nicki pose la question :
What jobs involve using conics?
Penny Nom lui répond. |
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A two-digit number is five times its units digit. |
2007-02-21 |
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Pamela pose la question :
A two-digit number is five times its units digit. If the digits are reversed, the resulting number is 27 more than the original number. Find the original number.
Gabriel Potter and Penny Nom lui répond. |
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0.68 acres |
2007-02-21 |
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Tembir pose la question :
what is the square feet of .68 acres?
What is the perimeter of .68 acres in feet?
Penny Nom lui répond. |
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Acceleration |
2007-02-20 |
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thomas pose la question :
Don't know if this service still exists. ACCELERATION CALCULATION initial vel 0km/hr final vel 24km/hr time 3s
Stephen La Rocque lui répond. |
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Finding the equation of the circle |
2007-02-20 |
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ning pose la question :
Given the radius of a circle square root of 10 tangent to the line 3x+y+19 = 0 and passing through (0,-3), how can i solve the equation of circle? thank you...
Chris Fisher, Steve La Rocque and Penny Nom lui répond. |
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Jim had 45 marbles and he lost 11 1/9% of them |
2007-02-20 |
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Mesha pose la question :
If Jim had 45 marbles and he lost 11 1/9% of them, how many had he left?
Steve La Rocque and Haley Ess lui répond. |
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Find the area of the triangle |
2007-02-20 |
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Christina pose la question :
Graph the function f(X)= x+1/x-1 and graph the tangent line to the function at the points A:(2,3) and B:(-1,0). The point of intersection of the two tangent lines is C. Find the area of the triangle ABC.
Stephen La Rocque lui répond. |
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A common tangent line |
2007-02-20 |
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chris pose la question :
I have this problem I have been working on for days and cannot figure it out. it states: Find the two points on the curve y=x^4 - 2x^2 - x that have a common tangent line.
I know you use the first derivative to find the tangent line so if it is a common tangent line should you find two of the exact same tangent line equations at two coordinate points?
Chris Fisher lui répond. |
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