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Motorcycle markup |
2010-01-12 |
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From Harold:
I went to a motorcycle dealership and saw a motorcycle costing $11,000. Dealerships have a way of marking up a product about 300%. What is the original cost of the motorcycle before the 300% markup?
Answered by Robert Dawson. |
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Percentage increase from a negative to a positive |
2010-01-12 |
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From Greg:
If a company had a net lost in 2005 of $11,234 and net income of $3231 in 2006, what is the percentage annual growth in income between the two years?
Answered by Robert Dawson. |
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Improper fractions |
2010-01-12 |
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From Blanca:
Between which two consecutive natural numbers does the improper fraction 57/56 lie?
Answered by Robert Dawson. |
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The triangle inequality |
2010-01-11 |
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From Nazrul:
If A and B are any two vectors, then how can I prove that magnitude of (A+B)<=magnitude of A+magnitude of B. Please show me the process in details. Thank you.
Answered by Robert Dawson. |
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A proof involving real numbers |
2010-01-11 |
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From Amper:
Let a,b is an element of real numbers, and suppose that for every x>0 we have a is lesser than or equal to b+x.
(a) Show that a is lesser than or equal to b.
(b) Show that it does not follow that a is lesser than b.
i'm feeling bad of having no idea with this, hope i you can help me. GRACIAS!!
Answered by Penny Nom. |
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How fast am I walking? |
2010-01-10 |
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From KEVIN:
IF I WALK 3 MILES IN 28 MINUTES, HOW FAST AM I WALKING?
Answered by Penny Nom. |
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Gail and Bill drove to the beach |
2010-01-10 |
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From Nicole:
Gail and Bill drove to the beach at an average speed of 50mph. They return home over the same road at an average speed of 55mph. The tip took 30 min less time. How far is the beach from their house?
Answered by Stephen La Rocque. |
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A set of 5 numbers |
2010-01-10 |
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From Marco:
I need to generate in an Excel or other table all possible combinations for a set of 5 numbers with the following criteria:
1.- Numbers can repeat.
2.- Order does not matter.
3.- Numbers may be from 0-9
4.- The sum of all numbers is equal or less than 31.
5.- The sum of all numbers is equal or greater than 10.
6.- One of the numbers is 2.
7.- One of the numbers is 5.
8.- One of the numbers is 7.
Marco
Answered by Penny Nom. |
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The intervals where the function is positive and negative |
2010-01-10 |
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From Ron:
Hello
I'm trying to find out the intervals where the function is positive and negative.
It's for a polynomial function y= -(x+2)^2 (x-2) and y= (x+1)(x+4)(x-3)
I have tried the right and left side of each x-intercepts, but I still don't understand the
results
thank you for your help
Answered by Penny Nom. |
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(x+3) is a factor of 2x^3-3x^2+px+30 |
2010-01-09 |
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From Ruby:
(x+3) is a factor of 2x^3-3x^2+px+30.
Determine the value of p
Answered by Penny Nom. |
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A pair of simultaneous equations |
2010-01-09 |
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From Yumiko:
Solve the following pair of simultaneous equations.
x^2 -4x = y^2-4
3y=2x - 3
Answered by Penny Nom. |
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Factoring |
2010-01-08 |
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From jim:
i am having trouble with grade 12 factoring in general, i just do not understand it, please help! here is and example of a question:
12ac+28bc-3ad-7bd and it gets tougher from there like 7a(squared)-14ab+7b(squared) any help is greatly appreciated
Answered by Stephen La Rocque. |
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The domain, range and inverse of a relation |
2010-01-08 |
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From Nazrul:
Given that A={-2,-1,0,1,2}, S={(x,y): x belongs to A, y belongs to A and y^2=x}. How can I find the domain and range of the relation S. What is the inverse relation of S. Please show me the process in details.
Thank you.
Answered by Penny Nom. |
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A sports schedule for the ymca |
2010-01-08 |
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From Erich:
i have to make a sports schedule for the ymca. i have 7 teams. they need to play each other 2 times. we have 3 time slots per night. i would like them to have an even number of time slots thru the season. one team must have abye each week. can you chow mw the schedul. example time 1 team 1 vs. team 2. time 2 team 3 vs. team 4 time 3 team 5 vs. team 6. team 7 bye week 1.
Answered by Victoria West. |
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L'aire d'un hexagon, octagon etc |
2010-01-07 |
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From danie:
C'est quoi la formule pour l'aire d'un hexagon, octagon etc. est-ce que c'est
Nombre de cotes x ((L'apothem x la mesure d'un cote tout divise par 2)???
Answered by Claude Tardif. |
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