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A cake must be divided evenly |
2009-01-20 |
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From kelen:
a 10 inch by 10 inch square cake must be divided evenly among 5 people. the top
and all four sides of the cake are frosted. each person must receive the same
amount of cake and the same amount of frosting. there must be no cake left over.
how can this be done?
Answered by Robert Dawson. |
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Square footage |
2009-01-20 |
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From david:
15 3 5/8 x 18 7"
Answered by Penny Nom. |
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The Golden Ratio |
2009-01-20 |
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From Vincent:
hello, my name is Vince,
I am wondering how the Golden ratio was used by early mathematicians.
What formula did they use to find it? open for anything... thank You!
Answered by Robert Dawson. |
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A triangle with sides of length 6 and 7 |
2009-01-20 |
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From bill:
If I have a triangle with sides 6 and 7,
which of the following is a possible area?
The answers are 13 and 21, but not 24.
I know this is because of a possible range of heights,
but how do I calculate the range of heights?
This is an SAT question. Thanks
Answered by Chris Fisher. |
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The number of gallons in a tank |
2009-01-19 |
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From Jim:
Hi, i need to know how many gallons of water can fit into our tank, and how to do the calculations my self. The tank is 72" round by 72" long, i would like some help. Thanks Jim.
Answered by Harley Weston. |
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The area of an isosceles triangle |
2009-01-19 |
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From faris:
how to calculate area of isosceles triangle with two angles of 45 degree and base of 6
Answered by Penny Nom. |
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Percentage increase |
2009-01-19 |
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From Destiny:
In 1990 there were 25 springs in the park. This year there are 35 springs
in the park. What is the percent increase?
Answered by Penny. |
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The volume of a prism |
2009-01-19 |
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From Mady:
What is the general equation used to find the volume of a triangular prism?
Answered by Robert Dawson and Harley Weston. |
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The area of a quadrilateral shape |
2009-01-19 |
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From craig:
how do u work out the area of a quadrilateral shape
Answered by Robert Dawson. |
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Two chords in a circle |
2009-01-19 |
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From azlaan:
prove that line joining the midpoint of 2 equal chords substain equal angle with the chord?
Answered by Robert Dawson. |
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The ratio of the measures of the three angles of a triangle |
2009-01-18 |
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From mary:
The ratio of the measures of the three angles of a triangle is 2:5:8. What is the measure of each angle of the triangle?
Answered by Robert Dawson and Harley Weston. |
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20 miles of gasoline |
2009-01-18 |
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From Roger:
I used the volume formula and found that a cylinder with a 3" radius X 8.75" height yields just over 231 cu. in. (one gallon)- doesn't seem right, but that's what I got. Then found the percent that 8.175" is to one foot and multiplied that into the number of feet in 20 miles. I'm not good at math, so I'm starting to lose myself here. The short story is I get a cylinder that is 20 miles long and only .0000387" in diameter. Is this even close to the mark?
Answered by Harley Weston. |
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A trig problem |
2009-01-18 |
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From Conor:
sinx= 6/10 ; Find the exact value of cos(squared) x / 1-tanx
Answered by Harley Weston. |
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The point of intersection of the straight lines |
2009-01-18 |
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From Kieran:
Find the point of intersection of the straight lines
y=2x+4, and y+2x-16=0
Answered by Robert Dawson and Penny Nom. |
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The dimensions of a pool |
2009-01-18 |
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From denise:
a rectangular swimming pool is three times as long as it is wide. if the perimeter of the pool is 320 feet, what are its dimensions
Answered by Penny Nom. |
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