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Sierpinski Pyramid |
2015-12-14 |
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From victor:
Is a tetrix (a Sirpienski Pyramid/Tetrahedron) its own hyperplane?...alternatively, is it a hyperplane?
Answered by Robert Dawson. |
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The positive root of sin(x) = x^2 |
2015-12-13 |
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From Kemboi:
Find the positive root of the equation sin(x) = x^2
Answered by Penny Nom. |
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Linear equations in two variables |
2015-12-13 |
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From priya:
I have problem in solving these equations please help me today itself very urgent:
I)2x+y=y
II)pie*x+y=9
Answered by Penny Nom. |
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The dimensions of a rectangle given its area and aspect ratio |
2015-12-13 |
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From colum:
Can you work out the length and width of a rectangle where you know only the area and aspect ratio
Answered by Penny Nom. |
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Constructing a cross country district schedule |
2015-12-13 |
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From David:
Retired math teacher trying to help son-in-law schedule a cross country district schedule. The would like to have four tri-meets each week for five weeks and one week of dual meets. The score the tri-meets as three duals, i.e. 1v2, 2v3, 1v3 constitutes one tri-meet. After many hours, not sure its possible, but I have forgotten a great deal! Thanks
Answered by Victoria West. |
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Building a dreamcatcher |
2015-12-10 |
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From Faye:
I have been asked to build a dreamcatcher, which is round into a 3x3foot area. What would the circumference be that I would need to make the hoop? I am thinking it is 9.42 feet long but am not good in math.
Answered by Penny Nom. |
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Matthew skateboards around the school |
2015-12-09 |
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From Abigail:
Matthew skateboards 4km each hour.
How long will it take him to skateboard around the school yard measuring 300m by 200m.?
Thank you.
Answered by Penny Nom. |
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The line of intersection of two planes |
2015-12-09 |
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From Rabz:
Determine the vector equation for the intersection between the two given planes
2x+7y equal to 14,x+z equal to 7
Answered by Penny Nom. |
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The original price before a discount and taxes |
2015-12-09 |
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From Michelle:
Good day,
I would like to know if there is a particular equation to validate the following information:
I had to find the original cost of an item sold for 759.36$ before a 25% discount and 13% taxes.
I know we must use separate question to obtain the answer but I am unsure how to write the equation to validate my answer.
Answered by Penny Nom. |
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20 golfers playing a 20 week season |
2015-12-07 |
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From Jeff:
We have 20 golfers playing a 20 week season. We play in foursomes. How best to set foursomes so everyone can play with every without playing with the same person multiple times?
Answered by Victoria West. |
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Travelling in opposite directions |
2015-12-06 |
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From Roselyn:
Jenny and Mark commute to work, travelling in opposite directions. Jenny leaves the house at 8 AM, and averages 35 kph. Mark leaves at 8:15 AM, and averages 40 kph.At what time will they be 40 kilometers apart?
Answered by Penny Nom. |
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Compacted and uncompacted soil |
2015-12-05 |
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From J.H.:
I am negotiating with a company to sell them land that they would use for excavating soil to be used in construction. I would like to value the land based on the volume of soil they are likely to remove. I have seen several answers, giving the calculation based on 43,650 sq. ft./acre x number of acres x number of feet in depth, divided by 27 to convert the number to cu. yds. However, that is the number when compacted. They pay $.50/yd. of soil removed, but that yd. is not compacted. How do you calculate the number of yds. of uncompacted soil in 1 acre of land?
Answered by Harley Weston. |
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A word problem with percentages |
2015-12-05 |
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From Caedryn:
After giving 25% of her stickers away, May had 50% as many stickers as Rose. If they had 200 stickers altogether at first, how many stickers did Rose have?
Answered by Penny Nom. |
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A schedule for a league with 15 teams |
2015-12-05 |
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From Zac:
Hello,
I have a league schedule question. We have a league where we have say have 15 teams. Each team is to play each other twice during a 10 week session.
However each team tries only to play 3 matches(teams) per night(week).
How would we set up a random schedule for the 10 week session?
Answered by Victoria West. |
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Drawing an arc |
2015-12-04 |
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From hassan:
how to draw a curve long 1m with an angle of 22.5?
Answered by Penny Nom. |
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