Topic: post list of topics
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	Filling holes with stone dust		2020-07-30
		From Zach: I’m looking for amount of stone dust needed for thirteen holes with a 3ft depth and 12in diameter with a 4x4 post. I would need the measurement in KG. Answered by Harley Weston.
	Signs at 1/3 mile intervals		2020-05-03
		From Heather: The butterfly garden in St. Thomas gardens is a three mile loop at every 1/3 there is a sign along the loop to mark each 3rd of a mile along the loop if Melanie is standing next to the 7th sign at what mile is she? Answered by Penny Nom.
	Forty foot and 9 spacers		2019-06-28
		From Christopher: Ok I've got forty foot and 9 spacers one each end and 7 between what is the distance between the seven in the middle Answered by Penny Nom.
	Pre tax and post tax percentages		2018-05-22
		From Tom: Hi, I work in a clothes shop which can also do mail-orders. My Head Office has sent a report with which we can check the records we keep in store tally with those at HO. According to that report we have taken £2578.25 in orders, excluding VAT (20%), which would therefore be £3093.91 including VAT (2578.25+20%=3093.91). According to my records, we have taken £3179.32 including VAT, which would be £2543.45 excluding VAT (3179.32-20%=2543.45). Why is it that the difference between the VAT inclusive figures (3179.32-3093.91) is +£85.41, but the difference between the VAT exclusive figures (2543.45-2578.26) is -£34.81? Now, I can see from the report that 1 order has not been recorded by HO, and I know that our average order value is around £30, so the -£34.81 makes sense. But surely both figures should be a minus, regardless of whether they include VAT? I'm sure there is an obvious answer, but I just cannot see it! Any help would be gratefully received. Thanks, Tom Answered by Penny Nom.
	Which term of this sequence has value 8?		2016-07-20
		From Lauren: Hi there Which term in the sequence -2; -5/3; -4/3 ; -1; ... has a value of 8. Since term 2 and 3 of this sequence contain fractions which can be converted to recurring decimals. What is the best way to work out the common difference here. I do however understand that to work out the nth term of an arithmetic series, the following formula Tn = a + (n-1)d. In this series a = -2 Answered by Penny Nom.
	The sum of the angles of a triangle		2016-02-24
		From Sophia: Does every triangle add up to 180 degrees? (Such as a unique triangle) Answered by Penny Nom.
	Which term of the series 2+7+12+...is 152?		2016-02-01
		From francis: whice term of the series 2+7+12+...is 152? Answered by Penny Nom.
	A 330 foot long fence		2015-02-15
		From Marsha: I am putting up a fence 330 feet long and want to put the t post every 4 feet how many t post do i need? Answered by Penny Nom.
	A fence post problem		2015-02-08
		From Nicole: In Susan's rectangular garden plot, she put 12 posts on the long sides and 8 posts on the short sides. How many posts did she use altogether? (The answer is not 40.) Answered by Penny Nom.
	Reducing the size of a poster by a scale factor of 1/3		2014-04-01
		From deeshon: eric is making a smaller copy of a poster that measures 20.4 cm wide by 34.2 cm long.he reduces the original by a scale factor of 1/3.what are the dimensions of the copy Answered by Penny Nom.
	Euclid's Parallel Postulate		2013-08-20
		From Justin: Hello there, I was wondering is Euclid's Fifth Parallel Postulate of parallel lines never intersecting, undecidable or essentially undecidable? Thank you so much for any help you can provide! Answered by Robert Dawson.
	Fence post holes		2012-07-19
		From Gerry: Hello, I'm digging 30 8" dia holes, 5 ft deep for fence posts that are 4"x 4" Can you please help me figure out how much stone dust I should order for all 30 holes. Thanks Answered by Penny Nom.
	A clock takes 3 seconds to strick the hour of 3 o'clock		2012-03-09
		From saptarshi: [ A clock takes 3 seconds to strick the hour of 3 o'clock. How many seconds will it take to strick 9 o'clock?] Answered by Robert Dawson.
	The volume of a compost pile		2009-12-11
		From Tim: I have a pile of compost that is78 feet long by 18 feet wide at base by 9 feet tall to a point. At the width it looks like a triangle I'm looking for the square yards Thanks Answered by Penny Nom.
	Zip codes, postal codes and 5 digit codes		2008-07-08
		From Mike: Sorry if you have answered this before but I don't understand the explanations I have seen. How many possible combinations are in a 5 digit code (like a Zip Code). Is there an equation that can be used for this type of question? Answered by Penny Nom.
	A pen with 40 post on each side		2008-03-18
		From Manpreet: how many post do you need to make a pen with 40 post on each side Answered by Penny Nom.
	How many locations for the lampposts are possible?		2007-01-21
		From Madeeha: Maria's backyard has two trees that are 40 feet apart, as shown in the accompanying diagram. She wants to place lampposts so that the posts are 30 feet from both of the trees. Draw a sketch to show where the lampposts could be placed in relation to the trees. How many locations for the lampposts are possible? Answered by Penny Nom.
	The dimensions of a poster		2006-03-08
		From Sonu: poster measures 150cm by 180cm is enlarged in the ratio 8:5 find the length and breath of the enlarged poster. Answered by Stephen La Rocque.
	A rope around a post		2002-07-15
		From Nic: My daughter who is in the 10th grade asked me this ?, you have a pole 45 inches high, 22inches around. You have a rope 1/2 thick, how many feet of rope would you use to go from top bottom of pole to top. Answered by Penny Nom.
	Three problems		2001-10-28
		From Brenda: Joseph is planting bushes around the perimeter of his lawn. If the bushes must be planted 4 feet apart and Joseph's lawn is 64 feet wide and 124 feet long, how many bushes will Joseph need to purchase? The cost of a long distance phone call is $1.50 for the first two minutes and $0.60 for each additional minute. How much will Maria pay for a 24 minute phone call? Find the next three numbers in the pattern. 1,3,7,15,31,___,____,___. Answered by Penny Nom.
	The height of the lamppost		2001-10-02
		From Werner: I am working on question 51,section 3.7 ,page 191 of Stewart's Single Variable Calculus. The question involves a lamp post which is casting a shadow around the eliipse whose formula is x2 + 4*y2 = 5. I have found the derivative of the elllipse both explicitly: x/4(((5-x2)/4)0.5) and implicitly : y' = - x/(4*y). Answered by Harley Weston.
	A lampost and its shadow		2000-12-24
		From Laura: A lamppost line EC casts a shadow line AC. A 30 cm ruler line DB has been moved from A so that it's shadow falls just within the shadow of the lamppost. Suppose the length of the ruler's shadow is 42 cm. What is the slope of the imaginary line AE? Suppose the lamppost's shadow is 15 m. long. How tall is the lamppost? Answered by Penny Nom.

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