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The perimeter of a figure |
2011-04-27 |
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From syed:
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.
Answered by Penny Nom. |
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5 digit numbers using the digits 5 and 2 |
2011-04-27 |
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From sissy:
I need a list of all possible 5 digit combinations using 5 and 2 numbers can repeat
Answered by Penny Nom. |
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cos(x) = -1/(square root of 2) |
2011-04-27 |
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From Shelby:
Find exact value of x for 1 <(or equal to) x < 2pi
a) cos(x) = -1/(square root of 2)
Answered by Penny Nom. |
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The radius of a cylinder |
2011-04-27 |
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From Jazmin:
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.
Answered by Penny Nom. |
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The length of a chord |
2011-04-25 |
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From G:
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.
Answered by Penny Nom. |
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(27^r^-1)^-2/3 |
2011-04-24 |
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From Yung-Ju:
(27^r^-1)^-2/3
Answered by Penny Nom. |
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A right angled triangle |
2011-04-22 |
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From jeremy:
Solve the right triangle with the given sides and angles. a=3.0 cm and b=1.6 cm
Answered by Penny Nom. |
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Two trig equations |
2011-04-20 |
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From Tony:
find the value of pi in the following:
sin pi= cos(pi + 40)
sin(80 - pi)=cos pi
Answered by Penny Nom. |
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Dividing the profits |
2011-04-19 |
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From Tracy:
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
Answered by Penny Nom. |
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How many cats are needed to catch 60 rats in 1 hour? |
2011-04-19 |
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From Melody:
If 3 cats can catch 3 rats in 3 minutes, how many cats are needed to catch 60 rats in 1 hour?
Answered by Penny Nom. |
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The quadratic with two given roots and a constant term |
2011-04-19 |
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From Lindah:
how do I food quadratic with two given roots and a constant term?
Answered by Penny Nom. |
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Solve x(x-3) = 5 (x+4) |
2011-04-19 |
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From Ashley:
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)
Answered by Penny Nom. |
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An antiderivative of the square root of (8t + 3) |
2011-04-19 |
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From Caitlyn:
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=
Answered by Penny Nom. |
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Ramon has 6 puppies |
2011-04-17 |
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From Mary:
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?
Answered by Penny Nom. |
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Find the rate at which the searchlight rotates |
2011-04-17 |
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From Meredith:
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.
Answered by Penny Nom. |
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