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4 odd numbers that equal 21 |
2007-10-15 |
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From gary:
4 odd numbers that equal 21
Answered by Penny Nom. |
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Four triangles in a square |
2007-10-15 |
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From Kristina:
A square with side lengths of 6 cm is divided into 3 right triangles and a larger isosceles triangle. If the three right triangles have equal area, find the exact area of the isosceles triangle.
Answered by Stephen La Rocque. |
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lim (1- 2 cosx) / (sin(x- pi/3)) |
2007-10-15 |
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From hanan:
lim (1- 2 cosx) / (sin(x- л/3))
Answered by Harley Weston. |
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What is the total population? |
2007-10-15 |
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From Tomco:
7/10 of the population believed 175,104,000 to be true - what is the total population.
We keep coming up with about 227,000,000 by just adding 30% to 175. Why doesn't that
work?
We have since figured out the answer to be 250...but why?
Answered by Steve La Rocque and Harley Weston. |
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20 tubes of concrete |
2007-10-14 |
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From Fred:
I have 20 8” concrete tubes to fill with 8'of concrete.
How much concrete will I need to order
Answered by Stephen La Rocque. |
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The dimensions of a rectangle |
2007-10-14 |
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From Elizabeth:
The perimeter of a rectangle is 20m. The area is 20sqm. Calculate the dimensions of the rectangle. Give your answers correct to two decimal places.
Answered by Penny Nom. |
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Nickels, dimes and pennies |
2007-10-14 |
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From tom:
you have $1.00 and 1/5 of it is dimes, 2/15 is nickels, and 2/3 is pennies. How many coins of each are there. how do i set it up to solve this problem. thanks, tom
Answered by Penny Nom. |
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How much can Daisy spend? |
2007-10-14 |
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From Math:
Daisy has $25.00 to spend on dinner. Her sister tells her to leave 18% of the bill as a tip and
the sales tax is 8% of the bill. What is the maximum amount she can spend on dinner in order to cover
the meal, sales tax, and the tip?
Answered by Penny Nom. |
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Working with x |
2007-10-12 |
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From Robert:
The question: The measure of an exterior angle of a regular polygon is given. Find the measure of an interior angle, and find the sides.
41. 36
42. 18
44. 'X'
The attachment has what she has done for 41 and 42. Need help with 44 (lots of help) Thank you in advance for your site and your help. Robert
Answered by Penny Nom. |
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15 divided by 5a |
2007-10-12 |
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From Susan:
Is "5a" considered an expression to be solved first, or do you simply go in PEMDAS order with the 15 divided by 5 in the following problem: Evaluate when a = 2 15 divided by 5a
Answered by Penny Nom. |
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How much water is in a hose? |
2007-10-12 |
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From Bryan:
I need to know how much water (gal) is in a hose thats 100' long by 5" in dia.
Thanks
Answered by Stephen La Rocque. |
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Domain and range |
2007-10-12 |
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From Dawn:
Hi, I've been out of school for 8 years and recently picked up a math correspondence course. I'm having trouble trying to figure out the range and domain of a linear function. I've read everything I can find in my text, lessons and on your site and I still can't figure out what I'm suppose to be doing. The function is y=2x+1. Please help.
Answered by Penny Nom. |
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13 year and 17 year locusts |
2007-10-12 |
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From stefan:
how many years pass between the years when both 13 year and 17 year locusts are out at the same time?
Answered by Penny Nom. |
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The diameter of an octagon |
2007-10-12 |
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From Lewis:
How do I calculate the dimension of the diameter of an Octagon when each leg has a dimension of 60 feet?
Answered by Penny Nom. |
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A trig limit |
2007-10-12 |
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From Amanda:
What is the limit, as x tends to zero, of: (1-cos(4x))/(xsin(x))?
Thank you!
~Amanda
Answered by Harley Weston. |
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