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Golf for 16 in 7 rounds |
2012-08-16 |
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From Elizabeth:
Hello,
I am trying to sort out golfing for 16 guys for 7 rounds. However the twist is that the teams are broken down into 8 old boys vs. 8 young boys. Ideally, each of the players would only play each other once within their own team and then twice within all of the matches. Is that possible? Thanks for your help, my brain is hurting!
Answered by Victoria West. |
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The length and depth of a chord |
2012-08-16 |
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From Tim:
Can I find the radius of a circle, if I have a chord of 2400mm, and a depth
between the center of the chord and the perimeter of the circle of 150mm ?
Thanks
Tim
Answered by Penny Nom. |
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Problem solving |
2012-08-15 |
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From Sugavanas:
If length of a rectangle exceeds its width by 5 m. if the width is increased by 1m and the length is decreased by 2 m, the area of the new rectangle is4 sq m less than the area of the original rectangle. Find the dimensions of the original rectangle.
Answered by Penny Nom. |
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A tapestry rod on a curved wall |
2012-08-14 |
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From Marlyn:
I have a curved wall with a radius of 6'. I am trying to have a 36" rod made to hang a tapestry and need to figure out the degree measure of the arc.
Can you help me please?
Answered by Penny Nom. |
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The exponential function form f(x)=a^x |
2012-08-13 |
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From Lucy:
Hi,
Why does the "a" value in the exponential function form f(x)=a^x have to be negative?
Answered by Penny Nom. |
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Two altitudes of a scalene triangle |
2012-08-13 |
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From grace:
Two of the altitudes of a scalene triangle ABC have length 4 and 12. If the length of the third altitude is also an integer, what is the biggest that it can be? Justify all of your conclusions.
Answered by Chris Fisher. |
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The intersection of normal subgroups |
2012-08-13 |
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From nokks:
let (G,*) BE A Group and prove that the intresection of normal subgroups of G is itself a normal subgroup of G
Answered by Penny Nom. |
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The range of h(x) = 1/x |
2012-08-11 |
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From Lucy:
What is the range of the function: h(x)=1/x (and can you please explain why)?
Answered by Penny Nom. |
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Changing a decimal or a number to a percent |
2012-08-10 |
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From Kenneth:
When a decimal or a number is changed to a percent, the decimal or number is multiplied by 100 and then a percent sign (%) is attached.
Why is it necessary to multiply by 100?
What is the reasoning or logic for using this calculation?
Answered by Robert Dawson. |
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A function from {a,b} to {p,q} |
2012-08-10 |
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From Lucy:
How can a function relate each element of a set with exactly one element of possibly the same set?
Answered by Penny Nom. |
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The volume of half an ellipsoid |
2012-08-10 |
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From Darcy:
Hi,
I need to calculate the volume of half an ellipsoid, split horizontally along the long axis. In effect, an oval shaped mound of soil. So the bottom would be an ellipse. I have the length, width and height measurements but not the formula. Thanks!
Answered by Robert Dawson and Walter Whiteley. |
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Domain and range |
2012-08-09 |
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From Lucy:
Can two different functions have the same domain and range? Why or why not?
Answered by Penny Nom. |
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A 4 digit number |
2012-08-09 |
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From May:
The number is given as ABCD. The first digit is a quarter of the last digit. The second digit is one less than the first digit.
When the number ABCD is multiplied by four its digits appear in the reverse order. None of the digits are the same. What is the number. Pleas help because my child need help and I can not do this. Thank you.
Answered by Penny Nom. |
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The difference between two numbers is 7. |
2012-08-09 |
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From May:
The difference between two numbers is 7. When the two numbers are multiplied the answer is 60. How do I work out the two numbers,I tried solving for one unknown and substitution and can not do it. Pleas show me how to do this.
Answered by Penny Nom. |
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How high must the trailer be filled with sand? |
2012-08-06 |
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From Deb:
Your customer has ordered 67 cubic yards of sand. The inside dimensions of your trailer are 40 feet long by 7 feet wide by 9 feet high. How high must the trailer be filled with sand? (Round up to the nearest inch.)
Answered by Penny Nom. |
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