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Complete the square |
2008-04-09 |
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jessica pose la question :
can you check my answer please thanks
f(x)=2x^2-4x+5
I got 2(x+2)^2-3 for when it asked to simplfy it to standard form of a quadratic
equation
Stephen La Rocque lui répond. |
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A river boat |
2008-04-09 |
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jessica pose la question :
heres a crazy riddle a river boat that travels 12 mph in still water makes a
pleasure trip to a city upstream and back in 3 hours. If the city is 10 miles aways, what is the rate of the current
Stephen La Rocque lui répond. |
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An isosceles right triangl |
2008-04-09 |
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Stephanie pose la question :
An isosceles right triangle has an area of 35 sq cm. What are the lengths of the sides?
Walter Whiteley lui répond. |
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A regular polygon |
2008-04-09 |
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chase pose la question :
name the regular polygon if the sum of the measures of the polygon is 1,440 and the measure of one angle is 144
Stephen La Rocque lui répond. |
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What is the easiest way to remember how to do percents? |
2008-04-09 |
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Amy pose la question :
what is the easiest way to remember how to do percents?
Stephen La Rocque lui répond. |
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2500mL of Phosphoric acid |
2008-04-09 |
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Trina pose la question :
If I have 2500mL of Phosphoric acid that has a fluoride concentration of 0.91% and need to increase it to 1.40% how much 49% HF do I need to add?
Harley Weston lui répond. |
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The zeros of a cubic |
2008-04-09 |
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Ryan pose la question :
what are all the zeros of f(x)= x^3-1/2x^2+1/3x-1/6
Penny Nom lui répond. |
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Complete the square |
2008-04-09 |
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jessica pose la question :
Use the technique of completing the square to put f(x)= 2x^2-4x+5
in the form f F(x)= a(x-h)^2+k were h,k=vertex of the parabola.
identify the coordinate (h,k)of the maximum or minimum point
of the associated parabola
Penny Nom lui répond. |
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cosec [arccos (1/y)] |
2008-04-09 |
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Tom pose la question :
I am having trouble with this question. For y > 1, the value of cosec [arccos (1/y)] is?
Penny Nom lui répond. |
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Side lengths and angles in a regular octagon |
2008-04-09 |
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Lori pose la question :
I am a builder and need to find the length of the sides of an octagon. I know the length between
the parallel sides (26 feet). What is the length of each side? What is the angle measurement?
Harley Weston lui répond. |
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Matrix multiplication |
2008-04-08 |
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manashi pose la question :
i. why matrix division is not possible?
ii.when we add or subtract two matrix , getting the result by addind or subtracting correspondind elements....but in case of multiplication it is not but why?
Harley Weston lui répond. |
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méthode pour trouver l'air d'un carré |
2008-04-08 |
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Mélodie pose la question :
je doit trouver au moins 4 manieres différentes de calculer l'air d'un carré.
j'en ai déja trouvée 2 mais il m'en faut le plus possible...
1. longueur x largeur
2. division en triangles, puis air des triangles et multipler par
l'air des triangles
Thierry Moisan lui répond. |
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A square garden of tulips |
2008-04-08 |
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Vincent pose la question :
Each year Brandon plants tulip bulbs in a square flower bed. This year Brandon's flower bed has 29 more bulbs than it had last year. If the flower bed is still square how many tulip bulbs are in it this year?
Penny Nom lui répond. |
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The weight of 1 litre of milk |
2008-04-07 |
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IMRAN pose la question :
WHAT WEIGHT IN KILOGRAMS DOES 1 LITRE OF MILK HAVE?
Penny Nom lui répond. |
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How many bags of mulch? |
2008-04-07 |
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MJ pose la question :
I have an area that is 35' X 50' and I want to cover it with 2" of mulch.
Do I take length X Width X depth? Bags of mulch are sold in 2 or 3 cubic feet per bag.....I just want to know how
to do the math. can you please send me the equation?
Penny Nom lui répond. |
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