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A cyclist a jogger and a fly |
2012-06-04 |
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From Emd:
A cyclist & a jogger are 20 miles apart.
Cyclist goes 20 mph & jogger 7mph towards each other.
A fly starts on nose of cyclist & flies at 20 mph from cyclist to jogger &
back & forth until they meet.
How far has the fly travelled?
Answered by Penny Nom. |
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A parabola |
2012-06-04 |
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From Madeline:
In a parabola, I need to know what "a" b and c determine. I think that a determines the width of the parabola, but I am not exactly sure what b, and c do.
Answered by Robert Dawson. |
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Translation of a graph |
2012-06-02 |
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From Sean:
the information is thus:
$f(x)=3(x+1)^2-2$
I wish to translate up 2 units and move 2 units right.
Answered by Penny Nom. |
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An octagonal home |
2012-05-29 |
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From Jan:
Lot size is 30' by 30' will a 1,165sq ft. Octagon home fit on lot? I don't know the wall size's only the total size of building? Thank You for have this?
If this won't fit what size in sq ft will fit?
Answered by Penny Nom. |
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Golf 16 |
2012-05-29 |
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From marknp:
16 players only want tp play with one player each one time
Answered by Victoria West. |
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The volume of a wedge |
2012-05-28 |
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From olwethu:
volume of wedge that have side 3,3 cm and 6,2 cm and 20 cm long?
Answered by Penny Nom. |
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The area of a semicircle |
2012-05-28 |
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From Rebecca:
how do you find the area of a semi circle and then how do you add the area of a semi circle and the area of a rectangle?
Answered by Penny Nom. |
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Multiples |
2012-05-28 |
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From Kenneth:
If I understand correctly , a multiple is a product of two numbers. For example some of the multiples of 6 are 6, 12, 18, 24, 30, etc. I just multiplied 6 by 1, 2, 3, 4, 5, etc.
Are the multiples of a fraction, for example, 2/3, determined in the same way? Are they 2/3, 4/3, 6/3, 8/3, 10/3, etc., or are they instead, 2/3, 4/6, 6/9, 8/12, 10/15, etc.?
Or do fractions have no multiples?
Answered by Penny Nom. |
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Division in base eleven |
2012-05-27 |
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From Zoe:
How do you divide numbers that are in base 11?
For example;
9A7A6A divided by A
Answered by Penny Nom. |
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6/49 |
2012-05-25 |
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From Mark:
Can you explain why the lotto 6/49 (a lottery of 49 numbers and 6 slots) is a combination and not a permutation?
It seems to me that it would a permutation given that the numbers are written in numeric "order" when you look them up in the newspaper.
I realize that 49P6 is orders of magnitude larger than 49C6. But I am confused about the reasoning behind it.
Answered by Robert Dawson. |
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Finding the circumcentre |
2012-05-24 |
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From Glen:
Hi,
I'm having trouble finding the circumcentre of these 3 co-ordinates- A(1,1) B(10.5,1) and C(6,6).
I understand what circumcentre is but I cannot work out where it is.
Thanks very Much,
Glen
Answered by Chris Fisher. |
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Eight character words |
2012-05-20 |
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From KiranReddy:
i have a requirement that , i need to generate 8 digit word [mix of 26 small letters and 0-9 digits , both are repeatable]
Please give me the count of such words we can generate
Answered by Penny Nom. |
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A 10 inch circle using 2x4s |
2012-05-19 |
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From Ralph:
I want to form a 10" circle with 4"high pieces of 2 x4's. If each 2x4 piece sit next to each other,What degree would I have to cut
each side of the 2x4's, and how many would I need to form a 10 inch circle. I know there is a formula for this out there somewhere.
Answered by Harley Weston. |
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How fast am i driving? |
2012-05-18 |
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From bozenga:
How fast am I driving if I cover 40 feet in .1 seconds (1/10th of a second)?
Answered by Penny Nom. |
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Romeo and Juliet live 40 miles apart |
2012-05-18 |
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From Abigaíl:
Romeo and Juliet live 40 miles apart. Romeo jogs 8mph, while Juliet “fast walks” at 4mph. They leave their houses at the same time and journey toward each other.
a) How many hours after they start will they meet?
b) Approximately how many miles from Romeo’s house is their meeting point?
Answered by Penny Nom. |
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