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My local pizza shop has for the same price, four 9 inch pizzas, three 12 inch pizzas or two 15 inch pizzas. which is the most pizza and how do you work it out? we also hate crusts? which has the most crust and hoe do you work it out? —Preceding unsigned comment added by Payneham ( talk • contribs) 05:00, 21 July 2009 (UTC)
To minimize the arithmetic to what can be done without computer: Note that the diameters, 9 12 15 inches, are simply 3 4 5 times some length unit, 3 inches. So the areas per pizza are 9 16 25 times some common area unit. The area of pizza per price is then (4×9, 3×16, 2×25) = 36 48 50, and the third option is obviously the one with most area of pizza. The amount of crust goes as the circumference, which is as (4×3, 3×4, 2×5) = 12 12 10. The third option is the one with least crust. Bo Jacoby ( talk) 08:03, 21 July 2009 (UTC).
If say, someone has done their mathematical homework.
If I being a naughty person and went to changed all the positive numbers into negative numbers by changing the sign and vice versa. Will the homework still be correct? 122.107.207.98 ( talk) 13:01, 21 July 2009 (UTC)
In Perron–Frobenius theorem, we read that an estimate is . While this is not too hard to understand, I need a citeable source for this statement in the non-negative case and so far failed to find one. Does anyone know any on the web (especially in Google-books, which I have been browsing through without success yet)? -- KnightMove ( talk) 17:43, 21 July 2009 (UTC)
Mathematics desk | ||
---|---|---|
< July 20 | << Jun | July | Aug >> | July 22 > |
Welcome to the Wikipedia Mathematics Reference Desk Archives |
---|
The page you are currently viewing is an archive page. While you can leave answers for any questions shown below, please ask new questions on one of the current reference desk pages. |
My local pizza shop has for the same price, four 9 inch pizzas, three 12 inch pizzas or two 15 inch pizzas. which is the most pizza and how do you work it out? we also hate crusts? which has the most crust and hoe do you work it out? —Preceding unsigned comment added by Payneham ( talk • contribs) 05:00, 21 July 2009 (UTC)
To minimize the arithmetic to what can be done without computer: Note that the diameters, 9 12 15 inches, are simply 3 4 5 times some length unit, 3 inches. So the areas per pizza are 9 16 25 times some common area unit. The area of pizza per price is then (4×9, 3×16, 2×25) = 36 48 50, and the third option is obviously the one with most area of pizza. The amount of crust goes as the circumference, which is as (4×3, 3×4, 2×5) = 12 12 10. The third option is the one with least crust. Bo Jacoby ( talk) 08:03, 21 July 2009 (UTC).
If say, someone has done their mathematical homework.
If I being a naughty person and went to changed all the positive numbers into negative numbers by changing the sign and vice versa. Will the homework still be correct? 122.107.207.98 ( talk) 13:01, 21 July 2009 (UTC)
In Perron–Frobenius theorem, we read that an estimate is . While this is not too hard to understand, I need a citeable source for this statement in the non-negative case and so far failed to find one. Does anyone know any on the web (especially in Google-books, which I have been browsing through without success yet)? -- KnightMove ( talk) 17:43, 21 July 2009 (UTC)