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Radio direction finders |
2014-01-09 |
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From Nathan:
Radio direction finders set up two points A and B, which are 2.5 miles
apart on an east-west line. From A, it is found that the bearing of a
signal from a radio transmitter is N36.33 degress E, while from B the
bearing of the same signal is N53.67 degrees W. Find the distance of
the transmitter from B.
Answered by Penny Nom. |
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A box-and-whisker plot with one whisker |
2014-01-09 |
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From Susan:
Question from Susan, a teacher:
I read your answer to the question about could a box & whisker have NO whiskers.
It made sense to me. However I am preparing for my advanced class and I have a sample graph comparing box plots of data.
Several of the box have only 1 whisker. There is no explanation for this. Can you help me out. I cannot think of a data set that would produce this. Thanks!
Answered by Penny Nom. |
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Two tuna boats |
2014-01-09 |
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From amanda:
Two tuna boats start from the same port at the same time, but they head in opposite directions. The faster boat travels 10 knots per hour faster than the slower boat. At the end of 8 hours, they were 272 nautical miles had each boat traveled by the end of the 8 hour period?
Answered by Penny Nom. |
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When would one flip the inequality sign? |
2014-01-09 |
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From Natasha:
Would one flip the inequality symbol in this equation: (explain why)
(-9a)/(-9) > 81
And please explain in what circumstances one would flip the inequality sign
THANKS!
Answered by Penny Nom. |
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A tire rolls 100 feet in a straight line |
2014-01-07 |
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From Alanna:
A tire has a diameter of 26 inches. If it goes 100 feet in a straight line, how many complete revolutions did it make?
Answered by Penny Nom. |
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A scalene triangle |
2014-01-07 |
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From cherry:
Hi
I have been given a scalene triangle of sides -
8m, 6m, and 10m ..
Please help me to find out the area and help me to find out the height ..
Answered by Penny Nom. |
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An arithmetic sequence |
2014-01-06 |
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From paris:
find the twenty-fifth term of an arithmetic sequence whose first term is 12 and whose common difference is -6
Answered by Penny Nom. |
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An equilateral triangle inscribed in a circle |
2014-01-06 |
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From Anonymous:
An equilateral triangle with sides 6 inches is inscribed in a circle. What is the diameter of the circle?
Answered by Penny Nom. |
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Profit as a percentage |
2014-01-04 |
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From Dane:
If i brought a card for £5 and sold it for £10 what is my profit percentage? 50% or 100%
Answered by Penny Nom. |
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Units digit |
2014-01-03 |
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From gracie:
9^23 units digit
Answered by Penny Nom. |
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25% profit |
2014-01-02 |
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From Finn:
Hello,
The question is all about buy-and-sell business.
Problem:
Pencil - $6 for whole sale price
$8 if I sell the item
How do I get the 25% profit? (you can change the whole sale price and the retail price[if i sell the item])
if I buy the pencil at 24 pieces and sell it at 24 pieces.
Answered by Penny Nom. |
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A square frame |
2014-01-01 |
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From steve:
using 6" wide boards how many inches would each of 4 boards equal in length need to be to produce a square with an inside perimeter of 84 inches on a side? what is the exterior perimeter? There is to be 45 degree cuts at each end of each board.
What formula is used to make this calculation?
Answered by Harley Weston. |
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4 children |
2013-12-31 |
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From hope:
4 children; Peter is 7 years old & is 4 years younger than Dave. Dave is 9 years older than Paul. Paul is 11 years younger than Frances. Please list the children in order from oldest to youngest?!
thank you and anxiously await your answer, Hope
Answered by Penny Nom. |
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What does y= f(x) actually mean? |
2013-12-31 |
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From John:
I don't understand how to pick coordinates for y=f(x).
I took a look at your answer to a previous question here:
http://mathcentral.uregina.ca/QQ/database/QQ.09.00/monica2.html
What does y= f(x) actually mean?
Answered by Penny Nom. |
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The markup as a percentage |
2013-12-31 |
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From Alesha:
The buyer for a chain of stores purchased coffee tables in bulk, paying $18.00 each. The store will sell each coffee table for $54. What is the markup percentage?
Answered by Penny Nom. |
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