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A cylinder of jelly beans |
2008-01-08 |
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From Kelly:
We are trying to figure out how many jelly beans it will take to fill a cylinder that is 10 feet tall and has a diameter of 6"?
also, if it can be coverted to ounces and then pounds so we know how much to order.
Answered by Stephen La Rocque. |
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Exponential form |
2008-01-08 |
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From liam:
i was wondering if anyone could help me with this question and tell me how and what the did; exponetial form of 4 326 180 501
Answered by Stephen La Rocque. |
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Donuts and bagels for the first period class |
2008-01-08 |
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From Karen:
Mr. Pace bought breakfast for his first period class. Ten donuts and fifteen bagels
cost a total of $15.75. Mrs. Pace bought breakfast for her class. Five donuts and twenty
bagels cost a total of $17.00. Set up and solve a system of linear equations to determine the cost
of one donut and one bagel.
Answered by Penny Nom. |
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Unique combinations of 5 names |
2008-01-08 |
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From tony:
Hi - I have went through so many of your answers and can't find exactly what I need. I am looking to find all possible combinations of names programmatically.
Example:
If I have 5 names:
Mike
Tony
Joe
Bill
Bob
How many unique combinations can I put together (regardless of order)
For instance:
(Mike, Tony) is 1 combination
(Mike, Joe, Bob) is another combination
but (Tony, Mike) is the same as (Mike, Tony) so it would not be valid.
I am pretty good in logic and math but by no means an expert. I am a programmer and am looking to store each unique combination in a database (I will handle that part of course I just need help on the unique combinations)
Answered by Victoria West. |
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A binomial probability problem |
2008-01-08 |
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From rougi:
According to statistics of the company about 4% of the people who buy tickets do not arrive to the flight . The company sells 205 tickets to plane that has 200 places . Use the binomial distribution to calculate what is the probability that all the people who come to the flight get a place.
Answered by Harley Weston. |
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Multiplying numbers in bases other than 10 |
2008-01-08 |
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From Imaiya:
In class we've been learning about numbers with a base other than ten. For example, base 7, base 5,
and base 6. What's really stumping me is how to multiply these numbers, when they aren't a base of 10.
I've had it explained to me once, but don't seem to understand it. Here are the equations, and I've listed the first few numbers for that particular base.
Base 5: 0,1,2,3,4,10,11,12,13,14,20 etc... The Equation: 34 x 42
Base 9: 1,2,3,4,5,6,7,8,10,11,12,13,14, etc... The Equation: 56 x 78
If you could explain to me how to multiply numbers with any type of base, I'd really appreaciate it. Also
if you could show me how to do one of the questions that I listed, that would really help me =) Thanks so much,
and once again, thank you for your great site!
Answered by Stephen La Rocque. |
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Conversion |
2008-01-08 |
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From Dom:
Hi ,
Is it possible to convert 175 grams per metered squared to cm ?
tks
Dom
Answered by Stephen La Rocque. |
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Combinations |
2008-01-08 |
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From david:
is there a simple formula to follow for the number of combinations a set of numbers could have
ie.( lotto 649, 6 numbers, 1-49 range)
Answered by Penny Nom. |
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Progression arithmétique |
2008-01-08 |
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From parrot:
Bonjour je suis en 6ème et j'ai besoin d'aide pour un problème de math.
Donc voila mon problème :
Un renard a mangé 100 grains de raisins pendant une periode de 5 jours.
Chaque jour, il a mangé six grains le plus que le jour précédent.
Quel est le nombre de grains mangés le premier jour ?
Answered by Claude Tardif. |
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sinX=cos2X |
2008-01-07 |
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From Jennifer:
sinX=cos2X
how do you solve for X? I'm frustrated I've forgotten how to solve this equation.
Answered by Stephen La Rocque and Harley Weston. |
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3 digit numbers made from 1,2,3,0 |
2008-01-07 |
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From cheri:
COULD YOU GIVE ME ALL THE # COMBINATIONS I NEED 3 DIGIT NUMBERS MADE OUT OF THE NUMBERS 1, 2, 3, 0.. I CAN ONLY COME UP WITH.. IM TRYING TO MAKE PASSWORDS FOR MY FINGERPRINT LOCK I PURCHASED, AND THEY TOLD ME THERE I COULD GET 78 DIFF COMBOS,,,,, PLEASE HELP ASAP, NEED TO GET MY CUSTOMERS HOOKED UP SO THAT THEY CAN ENTER THE CLUB HELP AND THANK YOU SO SO MUCH
Answered by Victoria West. |
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How far is the jet from the lighthouse? |
2008-01-07 |
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From Natalie:
Question: A ship spots a lighthouse that is 53m high, at an angle of elevation of 7 degrees that is directly north of the ship. The same ship spots a jet travelling N62E at an altitude of 1500m with an angle of elevation of 15 degrees. How far is the jet from the lighthouse?
Natalie
Answered by Harley Weston. |
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How fast does Kim paddle in still water? |
2008-01-07 |
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From Fran:
Kim paddled a canoe 10 km upstream and then paddled back to his starting point. If the rate of the current was 2 km/h that day and the whole trip took 3.75 h, how fast does Kim paddle in still water?
Answered by Penny Nom. |
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Sigma notation |
2008-01-06 |
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From jamelia:
what is this word problem in sigma style i am so lost at this point my first time ever attempting this subject
1+2+3+4+5
Answered by Penny Nom. |
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What year were the girls born in? |
2008-01-06 |
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From Nyra:
Christmas 2004 was over and three teenagers were looking forward to their birthdays. Eric's was in February and Lisa's and Tammy's in January. Tammy is 8 weeks older than Eric, but 3 days younger than Lisa. What year were the girls born in?
Answered by Claude Tardif. |
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