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Equations of two lines |
2006-04-05 |
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From Wael:
Determine a cartesian equation of the line passing through A and V as a direction vector?
1- A (2;1) and V = j
2- A (2;3) and V = i
Answered by Penny Nom. |
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A square in a circle |
2006-04-05 |
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From Lisa:
A square is inscribed in a circle. Determine the percent of the circle's area that is outside the square.
Answered by Stephen La Rocque. |
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A 20 foot container |
2006-04-05 |
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From Karen:
can you tell me how many cubic square meters are in a 20 foot container
Answered by Stephen La Rocque. |
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Probability of getting their stories straight |
2006-04-05 |
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From Amy:
Four students drive to school in the same car. They claim they were late because they had a flat tire. Assuming they did not have a flat tire what is the probability that they all would choose the same tire if asked which one was flat.
Answered by Stephen La Rocque. |
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x-7=20 and 2x+5=17 |
2006-04-04 |
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From Janette:
I'm trying to help out my daughter, it has been much too long since I've been in school. The question is x-7=20 and the other question is 2x+5=17. What are the formulas?
Answered by Penny Nom. |
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Mastering the multiplication tables |
2006-04-04 |
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From Ellie:
I need a detailed study plan fro helping my son master his multiplication tables.
Grade: 3 elementary
Answered by Paul Betts. |
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Is zero even or odd? |
2006-04-04 |
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From Aliya:
I would like to know if zero is an odd number or even number. I remembered my kindergarten teacher saying it is an odd number. My mom and sister says it is even number.
Answered by Penny Nom. |
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Two trig questions |
2006-04-04 |
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From mandy:
I have a few questions that I need help with for my precal class in college. The following have to prove the trigonometric identities:
cos4x + 2cos2x sin2x + sin4x = 1
sin4x - cos4x = 1 - 2cos2x
thanks you,
Answered by Stephen La Rocque. |
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2x+5y=3 And -x+3y=-7 |
2006-04-03 |
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From Lloyd:
simplify 2x+5y=3 And -x+3y=-7
Answered by Penny Nom. |
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List price plus 10% |
2006-04-03 |
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From Heather:
We shipped 2 pieces of an item with a unit price of $578.74 for a total amount of $1157.48. My task is to bill the customer at LIST + 10%. What formula do I need to use to calculate this?
Answered by penny Nom. |
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An exponential function |
2006-04-03 |
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From Meadow:
The graph of an exponential function passes through the points (0,1) and (4,10) find the constant of growth or decay. State the function.
Answered by Stephen La Rocque. |
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The size of a piece of property |
2006-04-02 |
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From Nancy:
My name is Nancy and we purchased a piece of property and I am trying to determine whether it is an acre or less. Could you figure this out for me.
Here are the measurements of the property:
The front is 128.02'
The back is 210'
The left side is 220'
The right side is 251.61'
I am very anxious to find out if it is over an acre.
Thank you for any help you can give.
Answered by Penny Nom. |
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The centre and radius of a circle |
2006-04-02 |
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From Kaye:
I need to calculate Dimension E and F. I am given A, B, C, (or over all A+B+C), D, G. The radius is one continuous unknown radius.
Example: A = 23.50
B = 35.50
C = 0.50
D = 11.50
G = 23.50
I have calculated this for angles but my mind is drawing a blank for the radius calculation. I can draw it but I need to put into Excel spreadsheet.
Answered by Harley Weston. |
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Some probability questions |
2006-04-02 |
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From Amy:
I am a student and need help on some probability questions
I really need your help on some problems dealing with probability. If you will show me how to do the following:
Answered by Harley Weston. |
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Wes and Tony live 360 km apart. |
2006-04-01 |
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From Thiru:
Wes and Tony live 360 km apart. If Wes travels at 80 km/h towards Tony. And Tony travels at 100 km/h towards Wes, how long will it take before they meet.
Answered by Penny Nom. |
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