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The amount of a washing machine |
2008-04-07 |
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From Eddy:
we have a washing machine with a specific cylinder size, which we could calculate the volume as a regular cylinder formulas. The question is, if we fill the washer cylinder with water at a specific height on water , example 15 cm height, how can we find the volume of water at that specific height?
Answered by Penny Nom. |
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What fraction of 45 is 10? |
2008-04-06 |
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From Scott:
45 x fraction? = 10
Answered by Penny Nom. |
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Énigme |
2008-04-06 |
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From Frédérique:
Tu es dans une pièce ou il y a 3 interrupteurs reliés a 3 lumières dans une autre pièce que tu ne vois pas.Comment fais-tu pour savoir a quelle lumière chacun des interrupteurs est relié si tu ne peux aller voir dans l'autre pièce qu'une seule fois!Merci a l'avance!!!
Answered by Claude Tardif. |
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The sum of some 5 digit numbers |
2008-04-05 |
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From Tom:
There are 120 five-digit numbers that use all the digits 1 through 5 exactly once. What is the sum of these 120 numbers?
Answered by Penny Nom. |
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How much do the pumpkins weigh? |
2008-04-05 |
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From Jose:
Mr. Appleberry brought in pumpkins for science class, one for each group.
The fist task wa to weigh the pumpkins, but the scales they had wouldn't register
any weight under 7 pounds, and it seemed that two ot three pumpkins were under
that weight. The class decided that they could weigh the pumpkins two at a time,
so they weighed each pumpkin with each of other pumpkins.
The weights registered on the scale were:
7 pounds
8 pounds
9 pounds
10 pounds
11 pounds
12 pounds
How many pumpkins were there, and how much did each weigh?
Answered by Penny Nom. |
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Composition of functions: feet, inches and yards |
2008-04-05 |
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From Coya:
write a function f(x) that converts feet to inches.Now write a function g(x) that converts yards to feet. Explain what the composite function f(g(x)) means. Then evaluate f(g(x)) for x = 3,6, and 9.
Answered by Stephen La Rocque. |
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1-(1-P)^75=0.05 |
2008-04-05 |
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From Amy:
1-(1-P)^75=0.05
Answered by Stephen La Rocque and Penny Nom. |
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A volume of revolution |
2008-04-04 |
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From ted:
Consider the region bounded by y=x^2 + 1, y=5-3x and y=5. Sketch and
shade the given region; then set up but dont evaluate teh integrals to find
the following:
a) The volume of the solid generated by rotating the region about the line
y=5
b) the volume of the solid generated by rotating the region about the y-axis
Answered by Penny Nom. |
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Compatible numbers |
2008-04-04 |
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From dawn:
Need help. Estimate the quotient. Tell what compatible numbers you used.
817divided by 4 =
Answered by Penny Nom. |
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100 yards of cloth |
2008-04-04 |
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From Leroy:
(100 yards of cloth 48 inches = how many square yards)
Answered by Penny Nom. |
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Combien d'éleves fréquentent cette école? |
2008-04-04 |
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From Jeff:
Une ecole compte sept fois plus d'éleve que d'enseignants et enseignantes .De plus , le nombre de membres du personnel non enseignant correspond a la moitié du nombre d'enseignats et enseignantes . Si l'on tient compte de l'ensemble des éleves , du personnel enseignant et du personnel non enseignante , on dénombre 714 personnes . Combien d'éleves fréquentent cette école?
Answered by Antoine Letarte. |
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The angle between the hands on a clock |
2008-04-04 |
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From Kristin:
The question I need help with is : Bobo looked at the clock at 1:25. What was the precise measure of the angle formed by the hour and minute hands of the clock? Assume that each of the clock hands moves at a constant rate continuously around the face of the clock. Thus, in any given fractional part of an hour, each hand will move that same fractional part of an hour's worth of movement.
Answered by Stephen La Rocque. |
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lim as x approaches infinite of 5x + 2/x-1 |
2008-04-04 |
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From Jordan:
how to solve this.
lim as x approaches infinite of 5x + 2/x-1
Answered by Stephen La Rocque and Harley Weston. |
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Finding the radius when only given chord length |
2008-04-03 |
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From Lorraine:
There are two chords in a circle, an 8 inch chord and a 10 inch chord. The 8 inch chord
is twice the distance from the center as the 10 inch chord. What is the radius?
Answered by Stephen La Rocque. |
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The shortest distance from a point to a line |
2008-04-03 |
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From Katherine:
How do I find the shortest distance from the point (3,5) to the line x = -2
Answered by Stephen La Rocque. |
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