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A problem with numbers |
2008-05-18 |
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From Peter:
When a certain number N is divided by d, the remainder is 7. If the original number N is multiplied by 5 and then divided by d, the remainder is 10, find d
Answered by Stephen La Rocque and Penny Nom. |
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Which is larger, 727464^512693 or 624610^518548? |
2008-05-18 |
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From Yahweh:
Lets say I have two very large numbers in the form of a^b:
727464^512693 and 624610^518548
I want to calculate which number is larger, but its unreasonable to type these numbers into a spreadsheet to get an answer right away. How could I determine the larger or the two numbers efficiently?
Answered by Stephen La Rocque. |
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The wedges in a circle graph |
2008-05-18 |
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From Libby:
I don't understand how to do this word problem:
The cafeteria workers distributed a survey to the student body asking students to pick 1 from a list of 5 choices for their favorite lunch. The circle graph below gives the results of the survey for the students who responded. What is the measure, in degrees, of the central angle for each choice?
And there is a pie chart that has food choices with these percentages: 25%, 20%, 15%, 10%, and 30%
Answered by Leeanne Boehm and Penny Nom. |
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sinx+cos(x+30degrees)=0 |
2008-05-17 |
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From geeta:
sinx+cos(x+30degrees)=0
Answered by Stephen La Rocque. |
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1/2 of infinity |
2008-05-16 |
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From Pamela:
Hello. My question was posed to me by my husband, who says he knows the answer and that there is an answer....I have tried to research it myself but to no avail. Here is the question, as he posed it to me.
?? = 1/2 of infinity.
Answered by Stephen La Rocque, Penny Nom and Claude Tardif. |
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A right angled triangle |
2008-05-16 |
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From bryan:
The sides of a right angled triangle are x, x+1, x+2 cm. Find the perimeter.
Answered by Penny Nom. |
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Girls, cats and kittens |
2008-05-16 |
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From leria:
There are 7 girls in a bus.
Each girl has 7 backpacks
In each backpack, there are 7 big cats
For every big cat, there are 7 little cats.
How many legs are there in the bus? One hint? it's a 6 digit number
Answered by Penny Nom. |
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The length of an arc |
2008-05-16 |
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From Don:
I am trying to determine the length of an arch with a two foot backset from 32 foot frontage.
Answered by Harley Weston. |
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The sides of a rectangle |
2008-05-16 |
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From bill:
The area of the rectangle is 170 sq.ft. the width is unknown and the length is the width plus 7 ft.
I set it up like this w(w+7)=170 and this is where I get lost. Thanks, Bill
Answered by Penny Nom. |
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Fencing around a playground |
2008-05-15 |
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From Vanessa:
If the playground is a rectangle with it's width 10ft shorter than it's length,
and it can be enclosed by exactly 140ft of fence,
what is the length and width of the playground?
Answered by Penny Nom. |
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cos3A=-1/3 find cos6A |
2008-05-15 |
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From mike:
cos3A=-1/3 find cos6A
Answered by Penny Nom. |
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The area of a trapezoid |
2008-05-15 |
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From Ashley:
what is the formula for area of a trapezoid
Answered by Penny Nom. |
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Tyres in a shipping container |
2008-05-14 |
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From Carlene:
I need to work out how many tyres will go in a shipping container.
The shipping container is 10 foot long, 8 foot wide and 8.6 foot high.
The tyre is 175 millimeters across and it is 14 inches in tyre thickness.
How many tyres will fit in my container?
Answered by Stephen La Rocque. |
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Filling a cistern with two pipes |
2008-05-14 |
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From ramya:
two pipes P and Q would fil a cistern in 30 mins and 40 mins respectively.
both pipes being opened. find when the first pipe be turned off so that the cistern may be just filled in 20 mins.
options:
1. after 10 mins
2. after 15 mins
3. after 20 mins
4. after 25 mins
Answered by Stephen La Rocque. |
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Percentage difference |
2008-05-14 |
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From sam:
if you move 3,626 packages in 2008 and moved 3,202 in 2007 what percet difference do you have from 2008/2007.
Answered by Penny Nom. |
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