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How much would 3 yards of stone cost? |
2007-08-21 |
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From Sue: If it costs $13.50 a ton of 3/4" stone, how much would 3 yards of stone cost? Answered by Steve La Rocque. |
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Percentage difference between a microcentury and 50 minutes |
2007-08-21 |
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From Wonder: A lecture period (50 min) is close to 1 microcentury.
Find the percentage difference from the approximation? Answered by Stephen La Rocque. |
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The surface area of a prism |
2007-08-21 |
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From Iliyas: State the area of prism with logical proof? Answered by Penny Nom. |
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The tens digit |
2007-08-21 |
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From Arul: Hi..
Please help me on this question..
Sequence 2, 7, 22,…after the first three terms, each term is three times the previous term plus 1, a(n+1)=3an + 1. What is the sum of tens digit 33rd and tens digit of the 35 term? Answered by Penny Nom. |
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Percentage change |
2007-08-21 |
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From Saleena: Hiya, my name is Saleena and I'm studying business at college. My question for you is what is the percentage change of turnover of the following supermarket.
Turnover (Millions) - ASDA
2001 -10,732
2002 -12,188
2003 -13,326
2004 - 14,318
2005 -14,865 Answered by Penny Nom. |
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A mixture problem |
2007-08-21 |
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From Arul: Hi
Please help me with this question
Seed mixture X is 40 percent ryegrass and 60 percent bluegrass by weight; seed mixture Y is 25 percent ryegrass and 75 percent fescue. If a mixture of X and Y contains 30 percent ryegrass, what percent of the weight of this mixture is X ? Answered by Stephen La Rocque. |
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Combining probabilities |
2007-08-20 |
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From Arul: Xavier, Yvonne, and Zelda each try independently to solve a problem. If their individual probabilities for success are 1/4, 1/2 , and 5/8 , respectively, what is the probability that Xavier and Yvonne, but not Zelda, will solve the problem ? Answered by Stephen La Rocque. |
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Markup |
2007-08-20 |
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From Drew: I own a manufacturing business and I need to figure out the best way to mark up our products so that we can make a profit for this year. Say for instance we have a plow that we can make for $938.00. We need to mark it up 20% so that we have some income. Do we take the $938 x 20% = $1125.60 or $938 / 80% = $1172.50? Answered by Stephen la rocque and Harley Weston. |
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A geometry problem |
2007-08-20 |
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From samhita: ABC is a triangle. Let D be a point on side BC produced beyond B such that BD=BA. Let M be the mid-point of AC. The bisector of angle ABC meets DM at P. Prove that angle BAP=angle ACB. Answered by Chris Fisher. |
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A sixth degree equation |
2007-08-20 |
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From Farzan: Dear friends
I need to solve this equation with an understandable method for high-school students :
(6.67*5.98*10^13/(R^2*2))^2 + 6.67*5.98*10^13/R = (7.27*10^-5*R)^2
please solve this problem if you have time. Answered by Harley Weston. |
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I want to fill the hole up with dirt |
2007-08-19 |
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From Roger: I have an 18 foot round hole which is 16 inches deep. I want to fill the hole up with dirt. How much dirt do I need to fill the hole?? Answered by Penny Nom. |
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How many dusters are required? |
2007-08-19 |
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From SUSAN: I have a roof that is 40,000 sq. ft. x 3 in. thick. I'd like to know how many 20 yard dumpster it would take to tear the roof off Answered by Harley Weston. |
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What feature on a graph shows the solution? |
2007-08-19 |
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From San: To solve the equation 2sinx+square root 3=0, what feature of the graph,
in the form y=asinx+b would show the solution? Draw a graph to show
the solution. thanks. Answered by Stephen La Rocque. |
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A square problem |
2007-08-19 |
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From Amanda: Consider a square with side s, diagonal d, area A and perimeter P.
a) express the diagonal in terms of the side.
b) express the area in terms of the diagonal. Answered by Stephen La Rocque. |
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The area of a five sided lot |
2007-08-19 |
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From Karyn: I have been looking at your site, but I am still confused as to how to
figure out the exact square footage of my irregular lot (since it is a gradual fan
lot from the front, and triangles out in the back). Answered by Harley Weston. |
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