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Aboriginal number groupings |
2008-09-04 |
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From Barbara:
Our current place value system is based on the notion of 10s. Did Aborginal people use a similar system or did they group numbers differently?
Answered by Harley Weston. |
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The length of an arc |
2008-09-04 |
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From Angie:
Segment PR is a diameter of circle S. If angle P =3D 25, find minor
arc QR.
This circle has an isosceles triangle in it, it is connected to the
diameter,
Answered by Harley Weston. |
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A line parallel to y= 1/2x + 5 |
2008-09-03 |
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From Michelle:
Find the equation of a line parallel to y= 1/2x + 5 if the required line passes through ( 3,4)
Answered by Penny Nom. |
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Largest Inscribed Rectangle |
2008-09-03 |
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From astrogirl:
find the shape and area of the largest rectangle that can be inscribed in a circle of a diameter a=2
Answered by Janice Cotcher. |
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I need an equation that best fits these numbers. |
2008-09-03 |
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From Vallatini,:
Attached, please find a plotted curve (pdf file). I have pulled values from this curve (see below). I need an equation that best fits these numbers. Can you help?
Answered by Harley Weston. |
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How accurate is the following calculation? |
2008-09-03 |
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From Craig:
Given that these numbers are only accurate to 2 decimal places, how accurate is the following calculation?
1.73 - 2.16 + 0.08 + 1.00 - 2.23 - 0.97 + 3.02 = 0.47
How do I work out the accuracy?
Answered by Penny Nom. |
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20 golfers playing 5 rounds in 4-somes |
2008-09-03 |
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From joe:
20 golfers playing 5 rounds in 4-somes. 5 players in group A play with all 15 golfers in groups B,C,D but not with any in their own group (A).
5 players in group B play with all 15 players in groups A,C,D but not with any in their own group (B) and so on. So each 4-some has an A,B,C,&D player each of the 5 rounds.
Answered by Chris Fisher. |
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1,679,616 as a power of 6 |
2008-09-03 |
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From Denise:
express 1,679,616 in exponential form as a power of 6.
Answered by Penny Nom. |
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BEDMAS |
2008-09-03 |
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From John:
I'm usually good at math but once i got to high school everything went blank for me. i am
especially stuck on this one question 6+4[22 / 2-3x2]. please help! thanks
Answered by Penny Nom. |
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A circular swimming pool |
2008-09-03 |
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From David:
A circular swimming pool with a diameter of 30ft and a horizontal bottom contains 22,000 gal of water. What is the depth of the water in the pool? (one cubic foot contains approximately 7.5 gal of water.)
I'm having a great deal of problem dealing with this, i dont know if the equation I'm using is correct or am i plugging it in the wrong place. V=TTr^2h .
if you can could you please explain to me step by step on how to set up this problem? the horizontal bottom thrown me off the most
Answered by Penny Nom. |
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Tara's game show winnings |
2008-09-02 |
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From David:
Tara paid one-half of her game-show winnings to the government for taxes. She invested one-third of her winning in Jeff's copy shop at 14% interest and one-sixth of her winnings in Kaiser's German Bakery at 12% interest. If she earned a total of $4000 on the investments in on year, then how much did she win on the game show?
Answered by Penny Nom. |
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A word problem with three numbers |
2008-09-02 |
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From Wanda:
"Jabari is thinking of three numbers. The greatest number is twice as big as the least number. The middle number is three more than the least number. The sum of the three numbers is 75. Find the numbers."
Answered by Victoria West. |
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A rectangular tank of water |
2008-09-02 |
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From Angela:
A rectangular tank is 80 ft long, 30 ft wide, and 20 ft deep. If 100,000 gallons of water were pumped into the tank, what would be the water rise?
Answered by Penny Nom. |
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Cows, chickens, heads and feet |
2008-09-01 |
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From marina:
Iam helping my 6th grader son solve this problem. I found similar problem in the Q&A.I understood the simple answer without using an equation. I want to solve this using the equation.This is the question about chicken and cows. There are cows and chickens in the farm. There are 65 heads and 226 legs. How many chicken are there?
Answered by Harley Weston. |
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A triangle and an inscribed circle |
2008-09-01 |
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From Nancy:
I'm a computer programming student, and I'm supposed to figure out how to find the area of a circle inside a triangle if someone types in the length of each side of the triangle.
So, a user can type in any three numbers they want into the three "side length" boxes, and I have to find the area of the circle that would fit inside the triangle they create from those values.
So the circle can be any size, depending on the size and shape of the triangle the user creates. The circle has to touch all three sides of the triangle somewhere. Then, my program calculates the area of the triangle and thus the area of the circle. I just need to know how the circle would change depending on the length of each side of the triangle that the user puts in. Is there a way to find out how the circle's area is related to the triangle around it?
Answered by Chris Fisher. |
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