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A right triangle |
2007-12-06 |
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Shubhomoy pose la question : The co-ordinates of a hypotenuse are (1,3) and (-4,1). Find the equations of the perpendicular sides. Harley Weston lui répond. |
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Plotting a function |
2007-12-06 |
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Paula pose la question : My son has a problem that says plot the point:
2x-3y=9
I have explained to him that there must be a function for y in order to plot that point, but he doesn't think so. The question above that one says find the function for y, and I assume we should use that function. Am I wrong? Can we plot a point without a y function. Stephen La Rocque lui répond. |
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System of equations |
2007-12-06 |
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Jenn pose la question : change the equation,x-y=4 to form y=mx+b
the solution to the system of equations y=2x and y=-x+3 is Stephen La Rocque lui répond. |
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A circle inscribed in a triangle |
2007-12-06 |
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Linnea pose la question : I have a tringle with a circle inscribed in it. My teacher wants me to find the radius of the circle. This is what she gave me to work with. The triangle is ABC, AB = AC = 6, and BC = 4. She also told us to use A(squared) + B(squared) = C(squared). and that there are altitudes and and incenter. I have no idea how to do this. Harley Weston lui répond. |
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Chicken and goat feet |
2007-12-05 |
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Kim pose la question : Old McDonald raises goats and chickens. The animals have a total of
100 heads adn 360 feet. How many goats and how many chickens does Mr.
McDonald have? Stephen La Rocque and Penny Nom lui répond. |
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Representing different bases |
2007-12-05 |
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Sudhir pose la question : What does a number subscripted to another one denote? (I know that a number superscripted to another denotes the power, but the subscript number is something I have never seen before.) Stephen La Rocque lui répond. |
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Third side of a triangle |
2007-12-05 |
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Sudhir pose la question : How can we find the all positive integral values for the third side of a triangle, whose other two sides measure 15 and 20 respectively. (No other information viz. the type of triangle, area, perimeter or angles etc. is given.) Stephen La Rocque lui répond. |
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A radius and a tangent to a circle |
2007-12-04 |
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elizabeth pose la question : show that the radius of a circle meets a tangent line to the circle in a 90 degree angle.
hint: start by assuming they are not perpendicular and at a contradiction. Penny Nom lui répond. |
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A decision based on data |
2007-12-04 |
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manny pose la question : You have administered a standardized test of manual dexterity to two groups of 10 semi skilled workers. One of these two groups of workers will be employed by you to work in a warehouse with many fragile items. The higher the manual dexterity of a worker the less likelihood that worker will break significant inventory. Because of a unique contract you must hire all 10 employees from one of the two groups and none of the employees from the other.
You must decide which group to choose. Choose at least two measures of central tendency and at least one measure of dispersion for each group and use those to make your choice. Be sure to justify your choice with at least one page of discussion and analysis. Penny Nom lui répond. |
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Percentage increase in profit |
2007-12-04 |
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Dee pose la question : If I had a certain % increase in profits for the entire year, why can't I add the profits I made for the first 1/2 of the year to the profit I made in the second 1/2 of the year to get the total year end profit percentage? Or how can I compare the increase/decrease for each 1/2 of the year to the total % increase/decrease? Penny Nom lui répond. |
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Ramp height |
2007-12-03 |
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Steve pose la question : I need to find the height of a angle.
23 degree angle at 12 feet of length is how high from the ground? Stephen La Rocque lui répond. |
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Guess and check |
2007-12-03 |
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Marissa pose la question : I was sent home with a guess and check work sheet. i am not sure how i am sopouse to do this.
a sleeping bag and 2 mess kits costs $37.00.A mess kit and two sleeping bags cost $56.00
what is the cost of one sleeping bag. Stephen La Rocque lui répond. |
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How many gallons are in the tank? |
2007-12-03 |
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bobby pose la question : my tank holds 740 gallons and the dimensions are 8 ft tall and 4 ft diameter the wine is 3 ft 7.5 inches from the top can you figure out how many gallons are in the tank ? Penny Nom lui répond. |
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Zip codes |
2007-12-03 |
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Natalie pose la question : How many 5 digits zip codes are possible if digits can be repeated? Penny Nom lui répond. |
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Proving a quadrilateral is a rhombus |
2007-12-03 |
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Jeanie pose la question : How do you prove that a quadrilateral is a rhombus because the diagonals
of the quadrilateral are perpendicular and bisect each other using the 2-column
proof method? Stephen La Rocque lui répond. |
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