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Identify the graph |
2008-05-05 |
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A parent pose la question :
Refer to the graph given below and identify the graph that represents the corresponding function. Justify your answer.
y = 2x
y = log2x
I can figure out what line on the graph is which equation but unsure what is meant by justify your answer.
Penny Nom lui répond. |
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Un tetraèdre régulier |
2008-05-05 |
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delabroye pose la question :
La figure ci-contre est un tetraèdre régulier :
AB = AC = BC = AD = 6cm
1) Représente un patron de ce tetraèdre
2) Calcule le volume de ce tétraèdre
Thierry Moisan lui répond. |
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BEDMAS |
2008-05-04 |
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Bernie pose la question :
Can you please solve one mathematical equation for me which is as follows. 3 squared - (5 + 16 divided by 4 times 2)
Penny Nom lui répond. |
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The distance from the chord to the centre |
2008-05-04 |
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sle pose la question :
What is the method for figuring this type of question out?
in a circle whose radius is 25, a chord has a length of 40. find the distance of this chord from the center of the circle
Penny Nom lui répond. |
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How many presses should be used? |
2008-05-04 |
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Sarah pose la question :
Hi! I am in Calculus and this problem is on my study guide and i just cant figure it out!?
A printing company had eight presses, each of which can print 300 copies per hour. It costs $5.00 to set up each press for a run and 12.5+6n dollars to run n presses for an hour. How many presses should be used to print 6000 copies most profitably? Let h equal the number of hours used to print the 6000 copies.
Harley Weston lui répond. |
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Zero divided by infinity |
2008-05-03 |
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ANNE pose la question :
There was a question about what do you get when you divide Zero by infinity. There was an example using Potatoes. Could someone please explain a little bit more in detail, so that I can help my son who has Schizophrenia understand. He is big into Mathematics and is consumed by this question.
Thankyou so much,
Anne
Penny Nom lui répond. |
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A root of a polynomial |
2008-05-03 |
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john pose la question :
here is a word problem that my teacher gave us to do can you help me understand it
Give possible formulas (in factored form) and sketch the graphs for two different polynomials that have roots -3, -1, and 2, but cross the x-axis only at x=2 and have y-intercept 4.5. What is the lowest degree such a polynomial can have? Can it have an even degree? An odd degree? Explain why.
her term "root" has completely thrown me off, i've reviewed my book and cant find what she is referring to. can anyone help?
Penny Nom lui répond. |
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Four cookies |
2008-05-03 |
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tashera pose la question :
if a serving is 5 cookies. how many servings can i make from 4 cookies?
Stephen La Rocque lui répond. |
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The inverse of a function |
2008-05-03 |
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keith pose la question :
please help me find the inverse of this function:
h(t) = 2 + 4 ln(1-5t)
Stephen La Rocque lui répond. |
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(1-i)ln(1+i) |
2008-05-02 |
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Kim pose la question :
I am stuck on the expansion of (1-i)ln(1+i)=(1-i)[ln(square root of 2)+i(3.14/4 = 2n3.14)]
Harley Weston lui répond. |
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Determinants |
2008-05-02 |
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Henry pose la question :
I have a question about solving 3x3 matrices.
The traditional way, or at least the way I've been taught, is that if one has a 3x3 matrix such as:
[ a b c ]
[ d e f ]
[ g h i ]
one solves it according to this formula:
[ei - hf) - (bi - hc) + (bf - ec) = determinant.
According to a book I'm now studying to prepare for the California CSET exam, there is another, easier, way to solve it:
[ a b c ] [ a b ]
[ d e f ] [ d e ]
[ g h i ] [ g h ]
In other words, one repeats the first two rows of the matrix and adds them to the right.
At this point, the determinant is calculated thus:
(aei) +(bfg) + (cdh) - (gec) - (hfa) - (idb).
Is this, in fact, correct?
Harley Weston lui répond. |
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Markup |
2008-05-02 |
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Sussie pose la question :
I sold an item for $75.00
It cost me $17.00
How do I calculate to come up with the Markup %?
Penny Nom lui répond. |
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How many gallons are in 1,500 liters? |
2008-05-01 |
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bambi pose la question :
[How many gallons are in 1,500 liters?
Penny Nom lui répond. |
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Division by zero |
2008-05-01 |
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Bill pose la question :
Why does multiplication have a favored status so as to make division by zero undefined?
Harley Weston lui répond. |
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1/3-5/6=1/x, solve for x |
2008-05-01 |
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Lavada pose la question :
1/3-5/6=1/x How do I solve this problem.
Penny Nom lui répond. |
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