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The surface area of an ellipse |
2008-02-25 |
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From paritosh:
how is the surface area of a elliptical dome be calculated when the two diameters are 55 metres and 35 metres and the height of the structure is 13.4 mts?
Answered by Harley Weston. |
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Handshakes at a twenty person party |
2008-02-25 |
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From Chris:
Twenty people have gathered at a party. Find the number of handshakes when each person shakes hands with everyone else at the party.
Answered by Penny Nom. |
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The base of an isosceles triangle |
2008-02-24 |
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From tahrima:
find the base of an isosceles triangle whose area is 12sq.cm and the length of 1 of the equal sides is 5 cm.
Answered by Stephen La Rocque. |
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Counting in base 5 |
2008-02-24 |
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From Jana:
my name is Jana, i really need help with a maths question at school. Im confused about how to count up from1-20 in a base-5 format! I'm in year 5 and i really don't get all the complicated stuff.
Answered by Stephen La Rocque. |
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9 employees require 15 days to complete a task |
2008-02-24 |
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From Alyssa:
if 9 employees require 15 days to complete a task, how long would it take to do the same work if there were 3 additional employees?
Answered by Penny Nom. |
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Pea gravel |
2008-02-24 |
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From Linda:
I have a space of 16 feet by 8 feet. I want to fill it with pea gravel 6 inches deep. If the bags of pea gravel are
.53 cubic foot. How many bags would I need. Thanks so much.
Answered by Stephen La Rocque. |
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lim sin 4x/sin 6x as x approaches zero |
2008-02-22 |
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From josh:
lim sin 4x/sin 6x
x approachs 0
Answered by Stephen La Rocque and Harley Weston. |
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Comparing fractions |
2008-02-21 |
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From Melissa:
Hello i am a sixth grader,
On my homework sheet there is the question : 5/45 _ 9/81
But it says to Compare the fractions. Use <,>, or = and i find it difficult to answer,
please help me find a simple way to answer questions like this.
Answered by Stephen La Rocque and Penny Nom. |
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Fact family |
2008-02-21 |
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From Anand:
Can you think of a fact family that has only two facts? Write the fact family
Answered by Penny Nom. |
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Actural cost, selling price and commission |
2008-02-21 |
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From LiSa:
I have a question about a few things if anyone can answer...
ex.
actual cost (AC) = $1000
selling price (SP) = $
amount earned for company (C) = 15% of... selling price?
commission 1 (C1) = 2.5%
commission 2 (C2) = 2.5%
How would you calculate how much the company's commission amount would be as well as the amounts for the other 2 that get 2.5%? And what would the selling price be? (the 15% $ + 2.5% $ + 2.5% $ ?)
Is the 2.5% taken from the original amount? I am soooo confused!
If anyone could help, that would be great!
Answered by Harley Weston. |
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The diagonal of a rectangle |
2008-02-21 |
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From tim:
is there a formula for finding the diagonal of a rectangle?
Answered by Penny Nom. |
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Algebraic fractions |
2008-02-21 |
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From sergio:
how to simplify
(x^2 +5x+6)/(x^2 - 4) x (x^2 -5x+6)/(x^2-9)
Answered by Stephen La Rocque. |
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10 - 3 + 2 |
2008-02-21 |
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From Amrit:
what 10-3+2
is it 5 or 9
Answered by Penny Nom. |
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Row echelon form |
2008-02-21 |
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From cOCO:
USE ELEMENTARY ROW OPERATIONS TO WRITE THE MATRIX BELOW IN ROW
ECHELON FORM.
1 1 8 - 2
2 -1 1 11
2 1 14 -11
Answered by Penny Nom. |
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8% simple interest for 6 years |
2008-02-20 |
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From Tiffany:
cindy puts 5,025 in a bank account that earns a simple interest rate of 8%. How much money will be in the account at the end of 6 years?
Answered by Stephen La Rocque and Penny Nom. |
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