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y = zx - x - c |
2001-12-11 |
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Andrew pose la question :
Could you please help me work out the value of x where: y = zx - x - c
Penny Nom lui répond. |
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Normal lines |
2001-12-11 |
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Kristie pose la question :
Why are perpendicular lines called normal lines?
Chris Fisher lui répond. |
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Cinderella clothes |
2001-12-11 |
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A student pose la question :
If cinderella clothes, inc. has determined that 0.5% of all incoming phone calls involve complaints, what is the probability that in 200 incoming calls there are more than one complaint?
Andrei Volodin lui répond. |
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y= (3x+2)/(4x-5) |
2001-12-05 |
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Courtney pose la question :
y= (3x+2)/(4x-5)
solve for x
Penny Nom lui répond. |
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Piles of coins |
2001-12-05 |
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A student pose la question :
Sharon has less than 20 coins. When she puts them in piles of 5, she has 1 left over. When she put them in piles of 3, she also has 1 left over. How many coins does Sharon have?
Penny Nom lui répond. |
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QED |
2001-12-05 |
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Derek pose la question :
What does Q.E.D. mean?
Harley Weston lui répond. |
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Fractions in lowest terms |
2001-12-05 |
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Thomas pose la question :
how to change decimal to a fraction in the lowest terms .7 .65 .019 .0111 .225 .1225 .625 .25 .025 .26 .875 .5 .75 .750 .33 .09 .44 .15 .12 .90 .044 .2500 .95 .500 .02 .40 .125 .1276 .00009 .45 .125 .1276 .375 .975 .054 .0005 .20 .2 .0001 .85 .80 .9 .0007 9.8 10.17 25.75 48.4 80.35 19.64 276.20 31.042 18.1034
Penny Nom lui répond. |
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Two equations in two unknowns |
2001-12-04 |
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Courtney pose la question :
y = 3x + 2
y = 4x - 5
solve for x
Penny Nom lui répond. |
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Permutations and combinations |
2001-12-03 |
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Linda pose la question :
There are 12 people who can be chosen for a project. Q1. Suppose that 2 people refuse to work together. How many groups of 7 can be chosen to work on a project? Q2. Suppose that 2 people insist on working together or neither will work on the project. How many groups of 7 can be chosen to work on the project?
Penny Nom lui répond. |
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83.3% |
2001-12-03 |
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Ellie pose la question :
Please explain how a percentage like 83.3% is changed into a fractions. The answer given is 5/6 and I changed 83.3% to a regular decimal of .833, which would be 833/1000. How do they get 5/6 from that? HELP
Chris Fisher lui répond. |
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Integers |
2001-12-02 |
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Alison pose la question :
How do you use integers in your everday life?
Harley Weston lui répond. |
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Solving x^2-3x+5=0 |
2001-11-30 |
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Katy pose la question :
How do you find the solution to x2-3x+5=0?
Penny Nom lui répond. |
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Can a infinite set be smaller than another infinite set? |
2001-11-29 |
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Carlos pose la question :
Can a infinite set be smaller than another infinite set? If so why?
Chris Fisher and Penny Nom lui répond. |
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3, 6, 10, 15, 21 |
2001-11-29 |
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Patrick pose la question :
we are trying to find the expression to solve for the nth term in the pattern 3, 6, 10, 15, 21
Denis Hanson lui répond. |
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A lighthouse and related rates |
2001-11-29 |
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Melissa pose la question :
A lighthouse is located on a small island 3 km away from the nearest point P on a straight shoreline, and its light makes 4 revolutions per minute. How fast is the beam of light moving along the shoreline when it is 1 km from P?
Penny Nom lui répond. |
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