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| Acmlm's Board - I2 Archive - Brain Teasers - Strange Math Riddles |
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JJ64 Boo Level: 45 Posts: 601/919 EXP: 640956 For next: 19208 Since: 05-22-04 From: Green Bay, WI Since last post: 441 days Last activity: 269 days |
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| Apparently the hour helped. Anyway, what happened to the competition? Scores 1st. Grey-10 points 2nd. NSNick-5 points 2nd. wolfman2000-5 points 4th. Kirby all the way-3 points 4th. Heian-794-3 points 6th. Emptyeye-1 point 6th. RavenX-1 point 6th. Slash Dafter-1 point 6th. Xkeeper-1 point 7th. Teddylot-0 points Question 31 (1 point)- How many minutes are there in a millenium? |
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Grey the Stampede Don't mess with powers you don't understand. And yes. That means donuts. Level: 82  Posts: 78/3770 EXP: 5192909 For next: 16318 Since: 06-17-04 From: Kingston, RI, USA, Earth Since last post: 2 hours Last activity: 1 hour |
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| I thought I was supposed to wait an hour between guesses? | |||
KATW King Yoshi "If you stare at something long enough, it can be funny." Level: 86  Posts: 1224/3959 EXP: 6087979 For next: 54128 Since: 03-15-04 Since last post: 7 hours Last activity: 5 hours |
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| 525960000 minutes... I think | |||
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NSNick Laidback Admin Level: 85  Posts: 558/3875 EXP: 5895841 For next: 2699 Since: 03-15-04 From: North Side School: OSU Since last post: 9 hours Last activity: 1 hour |
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| 1000 years * (365.25 days/1 year) * (24 hours/1 day) * (60 minutes/1 hour) * (60 seconds/1 minute) = 31557600000 seconds | |||
Heian-794 Red Super Koopa Level: 44 Posts: 187/896 EXP: 611014 For next: 271 Since: 06-01-04 From: Kyoto, Japan Since last post: 21 days Last activity: 10 days |
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| The years divisible by 100 but not by 400 are not leap years. So we've got to subtract a day out from 7 such years (assuming that this millenium begins with runs from 1 to 1000, or 1001 to 2000, etc.). This will make each millennium 10080 minutes shortedr that it otherwise would be, and without it the calendar will drift like it did before the Gregorian reckoning was devised. This leaves us with: 1000 years x (365.25 days/year) [this assumes regular leap years] x (1440 minutes per day - ( 7 x 1440) = 525,949,920 minutes (edited by Heian-794 on 07-02-04 03:20 AM) |
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JJ64 Boo Level: 45 Posts: 604/919 EXP: 640956 For next: 19208 Since: 05-22-04 From: Green Bay, WI Since last post: 441 days Last activity: 269 days |
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| Hmm... I didn't expect anyone to catch that. Anyway, Heian-794 gets the point. Grey, you don't have to wait at all before guesses. Also, NSNick, it was minutes, not seconds. Scores 1st. Grey-10 points 2nd. NSNick-5 points 2nd. wolfman2000-5 points 4th. Heian-794-4 points 5th. Kirby all the way-3 points 6th. Emptyeye-1 point 6th. RavenX-1 point 6th. Slash Dafter-1 point 6th. Xkeeper-1 point 7th. Teddylot-0 points Question 32 (1 point)- Factor this equation: x (edited by JJ64 on 07-02-04 03:54 PM) |
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Heian-794 Red Super Koopa Level: 44 Posts: 188/896 EXP: 611014 For next: 271 Since: 06-01-04 From: Kyoto, Japan Since last post: 21 days Last activity: 10 days |
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| Using the quadratic formula, we get: -4 |
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KATW King Yoshi "If you stare at something long enough, it can be funny." Level: 86 Posts: 1233/3959 EXP: 6087979 For next: 54128 Since: 03-15-04 Since last post: 7 hours Last activity: 5 hours |
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| You CANT factor it Using sqrt b^2-4ac we get |16-160 and |-144 And you cant square root a negative number |
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Heian-794 Red Super Koopa Level: 44 Posts: 193/896 EXP: 611014 For next: 271 Since: 06-01-04 From: Kyoto, Japan Since last post: 21 days Last activity: 10 days |
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| Kirby, what's wrong with using irrational numbers? | |||
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KATW King Yoshi "If you stare at something long enough, it can be funny." Level: 86 Posts: 1239/3959 EXP: 6087979 For next: 54128 Since: 03-15-04 Since last post: 7 hours Last activity: 5 hours |
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Originally posted by Heian-794He said factor it, and you cant with using good, existant numbers. Besides, thats how I learned to factor. Because teh parabola teh thing forms never will cross the X axis. |
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Heian-794 Red Super Koopa Level: 44 Posts: 198/896 EXP: 611014 For next: 271 Since: 06-01-04 From: Kyoto, Japan Since last post: 21 days Last activity: 10 days |
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| I learned factoring before I learned about irrational numbers, but no one said that we were restricted to rationals or that the graph had to have zeroes in the Cartesian plane or anything. So I'm happy with going off into the phantom irrational zone to pick out my answers! | |||
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NSNick Laidback Admin Level: 85 Posts: 566/3875 EXP: 5895841 For next: 2699 Since: 03-15-04 From: North Side School: OSU Since last post: 9 hours Last activity: 1 hour |
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| I haven't done algebra in a long time, so this might be completely off: (x+4-12i)(x+4+12i) = 0 |
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JJ64 Boo Level: 45 Posts: 609/919 EXP: 640956 For next: 19208 Since: 05-22-04 From: Green Bay, WI Since last post: 441 days Last activity: 269 days |
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| It has to cross the x-axis (unless it's x=ay | |||
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KATW King Yoshi "If you stare at something long enough, it can be funny." Level: 86 Posts: 1241/3959 EXP: 6087979 For next: 54128 Since: 03-15-04 Since last post: 7 hours Last activity: 5 hours |
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| 635 # x 2 + 11 x 2 + 10 x 2 + 9... |
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Heian-794 Red Super Koopa Level: 44 Posts: 204/896 EXP: 611014 For next: 271 Since: 06-01-04 From: Kyoto, Japan Since last post: 21 days Last activity: 10 days |
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| I agree with 635 but would say that each number in the series is (2^n x 10) +1. And of course you can factor a quadratic using irrationals! That's it; I'm playing this game under protest. |
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JJ64 Boo Level: 45 Posts: 616/919 EXP: 640956 For next: 19208 Since: 05-22-04 From: Green Bay, WI Since last post: 441 days Last activity: 269 days |
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| Heian-794, I did make a mistake. Everyone does once in a while. Besides, NSNick didn't have the right answer, and you didn't give a factored irrational number. Anyway, Kirby ATW has it. Scores 1st. Grey-10 points 2nd. NSNick-5 points 2nd. wolfman2000-5 points 2nd. Kirby all the way-5 points 4th. Heian-794-4 points 6th. Emptyeye-1 point 6th. RavenX-1 point 6th. Slash Dafter-1 point 6th. Xkeeper-1 point 7th. Teddylot-0 points An easy one. Question 34 (1 point)- If a=d, b=e, and c=f, a>c, and f>b, put these in this form: x>x>x>x>x>x Note: Since some are equal, the order only matters mathematically. |
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KATW King Yoshi "If you stare at something long enough, it can be funny." Level: 86 Posts: 1243/3959 EXP: 6087979 For next: 54128 Since: 03-15-04 Since last post: 7 hours Last activity: 5 hours |
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| okay... seems simple enough A>D>C>F>B>E Or A >= D>C >= F > B >= E >= is greater than or equal to |
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JJ64 Boo Level: 45 Posts: 620/919 EXP: 640956 For next: 19208 Since: 05-22-04 From: Green Bay, WI Since last post: 441 days Last activity: 269 days |
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| "Is greater than or equal to". That's a good catch. Scores 1st. Grey-10 points 2nd. Kirby all the way-6 points 3rd. NSNick-5 points 3rd. wolfman2000-5 points 5th. Heian-794-4 points 6th. Emptyeye-1 point 6th. RavenX-1 point 6th. Slash Dafter-1 point 6th. Xkeeper-1 point 7th. Teddylot-0 points Question 35 (1 point)- Solve this equation: |3x+40|+10=135 (edited by JJ64 on 07-03-04 11:32 AM) |
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Grey the Stampede Don't mess with powers you don't understand. And yes. That means donuts. Level: 82 Posts: 80/3770 EXP: 5192909 For next: 16318 Since: 06-17-04 From: Kingston, RI, USA, Earth Since last post: 2 hours Last activity: 1 hour |
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| We need either -125 or positive 125, so 3X becomes either -165 or 85. Divide these by three and you get -55 or positive 28.33333333333 (a third). | |||
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JJ64 Boo Level: 45 Posts: 622/919 EXP: 640956 For next: 19208 Since: 05-22-04 From: Green Bay, WI Since last post: 441 days Last activity: 269 days |
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| And Grey goes further into the lead. Scores 1st. Grey-11 points 2nd. Kirby all the way-6 points 3rd. NSNick-5 points 3rd. wolfman2000-5 points 5th. Heian-794-4 points 6th. Emptyeye-1 point 6th. RavenX-1 point 6th. Slash Dafter-1 point 6th. Xkeeper-1 point 7th. Teddylot-0 points Question 36 (1 point)- Solve the system of equations: x+4y=40 6x+12=20y |
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| Acmlm's Board - I2 Archive - Brain Teasers - Strange Math Riddles |
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