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Plotting y=f(x)+2 |
2013-01-21 |
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Gavin pose la question :
how would you plot y=f(x)+2
Penny Nom lui répond. |
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How many students have neither brown hair or hazel eyes? |
2013-01-20 |
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Julie pose la question :
There are 28 students in a class. 15 have brown hair, 17 have hazel eyes, and 10 have both. How many students have neither brown hair or hazel eyes?
Penny Nom lui répond. |
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Solve 2sin(2(theta))+sqrt(3)=0 |
2013-01-19 |
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Kaitlyn pose la question :
how do you solve 2sin(2(theta))+sqrt(3)=0 with the interval [0,2pi)
Penny Nom lui répond. |
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Maximize profit |
2013-01-19 |
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Chris pose la question :
A firm has the following total revenue and total cost function.
TR=100x-2x^2
TC=1/3x^3-5x^2+30x
Where x=output
Find the output level to minimize profit and the level of profit achieved at this output.
Penny Nom lui répond. |
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5 1/2 cubic feet of sawdust |
2013-01-19 |
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Vina pose la question :
I have a bale of sawdust that containes 5 1/2 cubic feet. How many will I need to make a cubic yard?
Penny Nom lui répond. |
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An equilateral triangle inscribed in a circle |
2013-01-17 |
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Nicole pose la question :
How do you find the shaded region of a circle if an unshaded equilateral triangle in inscribed in it. The only other things I know about the problem are that the side lengths of the equilateral triangle are 14 inches.
Penny Nom lui répond. |
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The weight of a pipe full of water |
2013-01-16 |
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joe pose la question :
how do you figure out the weight of a pipe full of water
Harley Weston lui répond. |
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A balance puzzle |
2013-01-14 |
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Emily pose la question :
I'm stuck on this problem and feel that it can't work! The problem is: there is a door with a balance scale on it. In order to open the door, you have to use the 5 weights to balance the scale. On the left side you have 2 boxes to place the weights and on the right side you have 3. You're 5 weights are as follows: 1lbs, 2lbs, 3lbs, 4lbs, 5lbs. How do you place the weights so that the scale is balanced?
Penny Nom lui répond. |
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Percent as a fractional relationship |
2013-01-14 |
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Kenneth pose la question :
What does the following indicate?
"A percent is another way of expressing the ratio or fractional relationship
of two numbers."
I know what a ratio is, but the term "fractional relationship" confuses me.
I thank you for your reply.
Penny Nom lui répond. |
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A shed roof |
2013-01-12 |
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christine pose la question :
A roof on a shed is 7.3 ft wide has an incline of 20 degrees what is the height?
Penny Nom lui répond. |
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A large ditch |
2013-01-11 |
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steve pose la question :
hi
i have a large ditch to make a road entrance accross, the ditch is a green field on one side
and a highway on the other side
the ditch depth is 1.8m on the field side and 3.2 on the highway side
the culvert pipe is 1,2m in diameter
are you with me so far?
the entrance from the highway will be 26m wide tapering in to 6m - ,20 m in from the highway
there will be a concrete slab of 150mm over the top
the fall from highway to field must not exceed 1/8
any ideas how much stone it will need
Harley Weston lui répond. |
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How fast are we approaching each other? |
2013-01-11 |
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Heather pose la question :
If I am skating at 7 mph, and a car drives towards me at 15 mph, how fast are we approaching each other?
Penny Nom lui répond. |
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The side lengths of a triangle |
2013-01-07 |
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Katie pose la question :
How do I find the side lengths of a triangle knowing the base and its height?
Thank you,
Penny Nom lui répond. |
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A trig identity |
2013-01-04 |
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Tehmas pose la question :
Prove sinC+sinD=2sin(C+D/2)cos(C-D/2)
Harley Weston lui répond. |
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The quadratic formula |
2013-01-03 |
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itsel pose la question :
Find the discriminant ans use it to determine the use the quadratic formula to solve the equasion -2x^2+3x+2=0
Penny Nom lui répond. |
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