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Plotting a linear equation |
2006-10-09 |
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From Jennifer:
I am having problems explaining how to do these problems to my child .
graph:2=x-y
graph the equation: 2y+x=-3
Answered by Penny Nom. |
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One-quarter of all 3-subsets of the integers 1,2,3....,m contain the integer 5 |
2006-10-09 |
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From Hina:
If one-quarter of all 3-subsets of the integers 1,2,3....,m contain the integer 5, determine the value of m.
Answered by Steve La Rocque and Claude Tardif. |
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Metric conversion |
2006-10-08 |
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From Eve:
45.6 microliter to megaliter?
Answered by Stephen La Rocque. |
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The units digit of 12^40 |
2006-10-08 |
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From Lana:
FIND THE UNITS DIGIT OF 12 TO THE POWER OF 40.
Answered by Penny Nom. |
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The area of an oval |
2006-10-08 |
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From Bruce:
area of an oval: 60" x 120"
Answered by Stephen La Rocque. |
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Four fours |
2006-10-08 |
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From Prabh:
Find out 10 BEDMAS problems using order of operation with only four 4's in the problem. The solution must be the digits 1-10.
Example 44/44=1
Answered by Stephen La Rocque. |
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Squaring numbers |
2006-10-08 |
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From Timothy:
did anyone ever try to teach that the easiest way to find the next square in a group of numbers is to add the next odd number in the sequence. for example: 1 squared is 1, 2 squared is 4,difference of 3.the next odd number is 5 so the next square would be 4 +5 or 9
Answered by Paul Betts and Penny Nom. |
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Two problems involving density |
2006-10-06 |
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From Patricia:
1. Nick has to ship 650,000 g of substance A to Singapore. The density of substance A is 3.23g/cm^3. If the delivery charge is 0.25 centavo per cm^3,how much does he need to pay?
2.Ann ordered 150 balloons for a birthday. Each balloon has a radius of 20cm. If the density of helium is 0.124g/cm^3,how many grams of helium is needed to meet the order?
Answered by Stephen La Rocque. |
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Standard deviation |
2006-10-04 |
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From Jennifer:
I was wondering how to figure out a standard deviation if you only have the mean of the data and no other information?
Answered by Stephen La Rocque. |
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Fill in the blanks |
2006-10-04 |
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From Justin:
1. To find out about how much, you can-------------
2. The --------- ---------states that the sum is the same no matter who you group the addends.
Answered by Stephen La Rocque. |
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The volume of a hexahedron. |
2006-10-04 |
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From A student:
How do i compute volume of a generic hexahedron with all its faces being quadrilateral?
Answered by Penny Nom. |
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Filling a swimming pool |
2006-10-04 |
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From Jon:
what would be the formula to fill a swimming pool in with dirt that is 15ft wide,36ft long and is 8ft deep to 3ft deep
Answered by Penny Nom. |
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Least common denominator |
2006-10-04 |
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From Paulette:
Why is the LCD of 3/4 and 4/8 not the product of 4 and 8?
Answered by Penny Nom. |
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Angular speed |
2006-10-04 |
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From Jack:
A horse on a merry-go-round is 7m from the center and travels at a speed of 10km/h. What is its angular speed?
Answered by Stephen La Rocque. |
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How many line segments are necessary? |
2006-10-04 |
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From Varun:
If you place 35 points on a piece of paper so that no three are collinear, how many line segments are necessary to connect each point to all the others?
Answered by Stephen La Rocque. |
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