| Subject | Date Asked | Expert |
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| maths problem | 11/20/2009 | Scott A Wilson |
Q: a bicycle dealer allows 10% discount and still makes a profit of 20% on his bicycle if the total ...
A: Let me see if I understand the problem. A bicycle dealer allows 10% discount on his bicycles. He ...
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| Math | 11/20/2009 | Scott A Wilson |
Q: ok if i have a 6 digit number how many possible codes can it be using the numbers 0-9 and you can ...
A: Since the numbers go from 000000 (which is 0) to 999999, which is 999,999, that looks like a million ...
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| Solving Systems of Linear Equations in Three Variables | 11/19/2009 | Scott A Wilson |
Q: I am so confused. For homework this week my teacher gave us a critical thinking activity on 'solving ...
A: Suppose you are the director of purchasing for a large commercial airline company. Several years ...
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| Math Story Problem | 11/18/2009 | Scott A Wilson |
Q: The halftime marching band (football) must stand in a formation meeting these requirements: 1. ...
A: If a 5 pointed star is made with the top point on the 50 yard line and 21 people on each sides, this ...
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| sinusoidal function | 11/18/2009 | Scott A Wilson |
Q: The motion of a clock's hour and minute hand around the clock face can be modelled by a sinusoidal ...
A: 1a) The height of the end of the hands above the middle looks just like a cos() curve. The distance ...
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| Math-word problem help | 11/17/2009 | Scott A Wilson |
Q: The Cougars played two games against the Bobcats. In the games, the Cougars scored a total of 96 ...
A: 1. The Cougars could have scored 48 points each game, and the Bobcats would have scored 44 for the ...
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| Umm | 11/17/2009 | Scott A Wilson |
Q: Well I was doing a practice test for my exams and I did most of the other questions but this one is ...
A: Now I use hamburger in my spaghetti, and here we are going to add bologa. That way, no minced beef ...
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| Utilization | 11/12/2009 | Pawan Musale |
Q: Dont know if this is the right forum for this. I have a perplexing problem for which I believe only ...
A: Dimitrz, Your calculation is correct. Let us calculate it in a different way. Your company ...
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| Quadraitc Functions (Word Problems) | 11/12/2009 | Pawan Musale |
Q: I am having so much trouble with these problems: 1. The base of a triangle is 2cm more than the ...
A: Tammy, Please find below the solution to your questions. 1. Let height of triangle = h and base ...
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| math | 11/11/2009 | Scott A Wilson |
Q: calculate the monthly payment by loan amortization table: loan 26,000 down payment 5,000 11% 36 ...
A: I don't have a load amoritization table, but I know the formula. The payment would be on 26,000 - ...
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| Area of Rectangular | 11/10/2009 | Scott A Wilson |
Q: A rectangular dog pen pen is to be made with 116 feet of fence wire. An existing property fence will ...
A: Perimeter P = 2W + L, since one L is already had, so L = P - 2W. Area A = WL, and L can be put in. ...
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| inequality word problem | 11/9/2009 | Scott A Wilson |
Q: I have the following two questions that are stumping me and many others to no end. Any help with ...
A: For David, he wants the total to be %150,000 + $80,000 = $230,000 after he pays the realtor 7%. That ...
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| maths | 11/8/2009 | Scott A Wilson |
Q: 1.find a fraction which reduces to 2/3 when 3 is added to both its numerator and denominator, and ...
A: 1. Let the fractioin be x/y. (x+3)/y = 2/3 and (x+1)/(y+1) = 3/5. The first one says that 3(x+3) = ...
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| Missing digits | 11/7/2009 | Scott A Wilson |
Q: Problem: The sum of unused digits is 16 T E N T + S I T E __________ S L E E P ANSWER: S ...
A: The three sets of numbers I gave you were A) 0,1,3,6,7,8,9 B) 0,1,2,4,5,8,9 and C) 0,1,4,5,6,8,9 ...
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| Trig | 11/7/2009 | Scott A Wilson |
Q: I need help with this word problem, please: A building contractor is planning to use a ladder to ...
A: Most the time if the ladder reaches the bottom of the window that's OK, so if the ladder is 18' and ...
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| Word Problems | 11/7/2009 | Scott A Wilson |
Q: 1. Find the two real numbers whose sum is 18 and whose product is a minimum. 2. Find the two real ...
A: 1. x+y=18, so y=18-x; maximize f(x) = x(19-x) = 19x - x² by solving f'(x) = 0. 2. x+y=24, so ...
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| need a solving | 11/6/2009 | Scott A Wilson |
Q: britney steals Jill's skateboard and the skateboard is going 35 mph and it takes Jill 20 seconds to ...
A: You've got to look at the units. 35 mph is 35 miles/hour. Now there is 1 hr/60 min and 1 min/60 ...
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| Rate Distance problems | 11/6/2009 | Scott A Wilson |
Q: This is a question my son cant figure out and I cant help can you please. At 9:30 a.m. Andrew left ...
A: At 10, A has gone 6 miles, so there are 14 miles left between them. The speed combined is 12+16 = ...
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| word problem | 11/5/2009 | Scott A Wilson |
Q: a student has 100 coins totaling $5.00. The student has no nickels, what coins does the student ...
A: This would mean that 60 of the coins are pennies, so that leaves 40 coins and $4.40. 40 dimes would ...
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| Missing digits | 11/4/2009 | Scott A Wilson |
Q: Problem: The sum of unused digits is 16 T E N T + S I T E __________ S L E E P
A: S has to be a 1, since there is 1 more digit in the answer and the sum of two distinct digits is no ...
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| need help getting the equation | 11/4/2009 | Scott A Wilson |
Q: The feed company sells 1 ounce package containing a mixture of lettuce seeds. Green stem seeds sell ...
A: Let p be the percentage in that one ounce package of green stem seeds. This makes 1-p the percentage ...
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| Transformations | 11/4/2009 | Scott A Wilson |
Q: For y=3f(2pheta-90')-1 , f(pheta)=sin pheta Evaluate for 30'
A: Is that y = 3f(2Θ-90°)-1? By the way, Θ is alt-233 (numbers on the right) and ° is ...
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| 8th Grade Math word prblem | 11/4/2009 | Scott A Wilson |
Q: Need help with how to set up following equation. Fred begins walking towards John's house at ...
A: It would be the same as if we asked how long it would take on to get across if they walked at (3+2) ...
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| Linear programming word problem | 11/3/2009 | Scott A Wilson |
Q: Matt is trying to determine the correct amount of fertilizer that should be applied to his lawn. A ...
A: I have put the answer in the attachment. Note that I put a +1 and a -1 where the rows have to have ...
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| Math | 11/3/2009 | Scott A Wilson |
Q: A principal of $2100 was invested in the stock market. Some shares of World Oil were bought at ...
A: Let the shares of World Oil be W. Let the shares of Zinco Mines be Z. What we are given is that ...
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| story problem | 11/3/2009 | Scott A Wilson |
Q: *etra bought gasoline when the odometer read 15,345.4 After the next filling, the odometer read ...
A: To get the number of miles that she drove take the ending value on the odometer - start value on ...
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| fraction story problem please help | 11/3/2009 | Scott A Wilson |
Q: 1. A recipe for strawberry punch calls for 1/5(qt) of ginger ale and 3/5(qt) of strawberry soda. a) ...
A: a) Well, it calls for one fifth of a quart and three fifths of a quart. Since the fractions are 1/5 ...
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| Ask You somethg. | 11/2/2009 | Scott A Wilson |
Q: one thing that always come to my mind and still its not being answered yet. To what extend truth in ...
A: With basic math, no. In graduate math, there might be one, though I can't recall studying sanything ...
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| Trig | 11/1/2009 | Scott A Wilson |
Q: I need help with this problem, please: Two hikers leave a tent at a campground and go separate ...
A: Put the campground at the origin on an x-y graph. This would put one town at (-15,0) and the other ...
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| Fractions | 11/1/2009 | Scott A Wilson |
Q: I sent you this question recently, and I have a follow-up question that follows your answer to my ...
A: I assume second Mary is supposed to be a different person. After all, the first one is 10 and the ...
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| Trig | 11/1/2009 | Scott A Wilson |
Q: I need help with this word problem, please: A building contractor is planning to use a ladder to ...
A: The ladder is the hypoteneuse of a right triangle. The ground is the horizontal edge and the ...
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| Fractions | 11/1/2009 | Scott A Wilson |
Q: I sent you this question recently, and I have a follow-up question that follows your answer to my ...
A: If Mary is M and Ruth is R, is this to say that M/2 + 2R/5 + M/4 = 14? That would say that 3M/4 + ...
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| Algebra i | 10/30/2009 | Scott A Wilson |
Q: grace dilutes 4.8 fl. oz. of pure hydrogen peroxide with 27.2 floz. of water to make 32 fl oz of a ...
A: What would happen if we added 1 oz of hydrogen peroxide, in theory only: 4.8 oz hydrogen peroxide ...
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| Uniform Motion Problem | 10/30/2009 | Scott A Wilson |
Q: A passenger train leaves a train depot 2 h after a freight train leaves the same depot. The freight ...
A: Time for P is time for F + 2. Both meet after 3 hours. Speed of F is speed of P - 20. This says ...
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| Fractions | 10/29/2009 | Scott A Wilson |
Q: 2/3 of Mary’s age equals Sarah’s age and 3/4 of Ruth’s age equals Sarah’s age. If the total ages ...
A: 2M/3 = R, 3R/4 = S, so putting R in gives 3(2M/3)/4 = S, so M/2 = S, so M = 2S. Also, it can be seen ...
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| Uniform Motion Problem | 10/29/2009 | Scott A Wilson |
Q: a car and a bus set out at 2 p.m. from the same point headed in the same direction. The average ...
A: Let C = car spped and B = bus speed. It is known that C+30=2B. Distance in 2 hours is 2C and 2B. It ...
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| systems of equations | 10/28/2009 | Scott A Wilson |
Q: a collection of nickels and dimes is $3.30. there are 42 coins in all. how many of each kid of coin ...
A: If they were all dimes, that would be $4.20. For each nickel added and dime subtracted, that makes ...
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| Speed, time & distance | 10/28/2009 | Scott A Wilson |
Q: Two cars left points A and B simultaneously, traveling towards each other. 9 hours after their ...
A: One of the basic physice equation is d = rt, where d=distance, r=rate, and t=time. I will try to ...
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| Algebra i | 10/28/2009 | Scott A Wilson |
Q: Grace dilutes 4.8 fluid oz. of pure hydrogen peroxide with 27.2 fluid oz. of water to make 32 fluid ...
A: Currently, we have 4.8/32 = 24/160 = 3/20 = 15/100 = 15% as the concentration of hydrogen peroxide. ...
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| math word problem | 10/28/2009 | Scott A Wilson |
Q: many of my teachers disagree with the answer some say -10 some say-16 What do you think? Rachel ...
A: R and L are swimmers. When L has 2 laps, R has 4 laps. Since they swim at the same rate, this means ...
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