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The perimeter of a figure |
2011-04-27 |
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syed pose la question :
Hello I'm Syed from Bangladesh.
Please help me out! It is killing me.
The question is=2C find the perimeter of the figure. I can't find the perimeter.
I am enclosing the figure as an attachment.
Penny Nom lui répond. |
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5 digit numbers using the digits 5 and 2 |
2011-04-27 |
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sissy pose la question :
I need a list of all possible 5 digit combinations using 5 and 2 numbers can repeat
Penny Nom lui répond. |
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cos(x) = -1/(square root of 2) |
2011-04-27 |
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Shelby pose la question :
Find exact value of x for 1 <(or equal to) x < 2pi
a) cos(x) = -1/(square root of 2)
Penny Nom lui répond. |
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The radius of a cylinder |
2011-04-27 |
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Jazmin pose la question :
Hi, I don't understand how to find the radius in a cylinder with only the surface area (143.7) and the height (0.8)? I know that the formula is 2pir2+2pirh, but I don't see how to isolate the r? I appreciate your help.
Penny Nom lui répond. |
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The length of a chord |
2011-04-25 |
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G pose la question :
A 120 degree central angle intercepts a circle at the points A and B. The radius of the circle is 10 cm. Find the length of chord AB.
Penny Nom lui répond. |
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(27^r^-1)^-2/3 |
2011-04-24 |
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Yung-Ju pose la question :
(27^r^-1)^-2/3
Penny Nom lui répond. |
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A right angled triangle |
2011-04-22 |
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jeremy pose la question :
Solve the right triangle with the given sides and angles. a=3.0 cm and b=1.6 cm
Penny Nom lui répond. |
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Two trig equations |
2011-04-20 |
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Tony pose la question :
find the value of pi in the following:
sin pi= cos(pi + 40)
sin(80 - pi)=cos pi
Penny Nom lui répond. |
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Dividing the profits |
2011-04-19 |
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Tracy pose la question :
I need to know how to come up with the answers to the following problems. I need to be able to show my work. So can you help me on how to come up with the answers to questions like these. Thanks.
Three individuals form a partnership and agree to divide the profits equally. X invests
$9,000, Y invests $7,000, Z invests $4,000. If the profits are $4,800, how much less
does x receive compared to having the profits divided in proportion to the amounts
invested by X, Y, and Z?
In printing an article of 48,000 words, a printer decides to use two sizes of type. Using the
larger type, a printed page contains 1,800 words. Using a smaller type, a page contains
2,400 words. The article is allotted 21 full pages in a magazine. How many pages must be
in smaller type? ___________
thank you
Penny Nom lui répond. |
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How many cats are needed to catch 60 rats in 1 hour? |
2011-04-19 |
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Melody pose la question :
If 3 cats can catch 3 rats in 3 minutes, how many cats are needed to catch 60 rats in 1 hour?
Penny Nom lui répond. |
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The quadratic with two given roots and a constant term |
2011-04-19 |
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Lindah pose la question :
how do I food quadratic with two given roots and a constant term?
Penny Nom lui répond. |
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Solve x(x-3) = 5 (x+4) |
2011-04-19 |
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Ashley pose la question :
I have to solve using the quadratic formula. And my answer should be in simplest exact form. And I can't approximate.
I really need help to prepare for a test ....
x(x-3) = 5 (x+4)
Penny Nom lui répond. |
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An antiderivative of the square root of (8t + 3) |
2011-04-19 |
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Caitlyn pose la question :
I know how to take an antiderivative. But this one's stumping me. I need it to finish a problem.
What's the antiderivative of the square root of (8t + 3)
~Caitlyn=
Penny Nom lui répond. |
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Ramon has 6 puppies |
2011-04-17 |
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Mary pose la question :
Ramon has 6 puppies. Five of the 6 weigh the same and one puppy is heavier. If Ramon had a balance scale, what is the least number of times he could weigh the puppies to be sure he could determine which puppy was heavier?
Penny Nom lui répond. |
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Find the rate at which the searchlight rotates |
2011-04-17 |
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Meredith pose la question :
A searchlight is position 10 meters from a sidewalk. A person is walking along the sidewalk at a constant speed of 2 meters per second. The searchlight rotates so that it shines on the person. Find the rate at which the searchlight rotates when the person is 25 meters from the searchlight.
Penny Nom lui répond. |
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