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11-02-05 12:59 PM
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JJ64

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Posted on 07-02-04 03:25 AM Link | Quote
Apparently the hour helped. Anyway, what happened to the competition?

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Question 31 (1 point)-

How many minutes are there in a millenium?
Grey the Stampede

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Posted on 07-02-04 04:59 AM Link | Quote
I thought I was supposed to wait an hour between guesses?
KATW

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Posted on 07-02-04 05:47 AM Link | Quote
525960000 minutes... I think
NSNick
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Posted on 07-02-04 06:05 AM Link | Quote
1000 years * (365.25 days/1 year) * (24 hours/1 day) * (60 minutes/1 hour) * (60 seconds/1 minute) = 31557600000 seconds
Heian-794

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Posted on 07-02-04 12:17 PM Link | Quote
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)
JJ64

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Posted on 07-02-04 07:25 PM Link | Quote
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.

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Question 32 (1 point)-

Factor this equation:

x


(edited by JJ64 on 07-02-04 03:54 PM)
Heian-794

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Posted on 07-02-04 09:29 PM Link | Quote
Using the quadratic formula, we get:

-4
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Posted on 07-02-04 09:34 PM Link | Quote
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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Posted on 07-02-04 09:59 PM Link | Quote
Kirby, what's wrong with using irrational numbers?
KATW

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Posted on 07-02-04 10:04 PM Link | Quote
Originally posted by Heian-794
Kirby, what's wrong with using irrational numbers?
He 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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Posted on 07-02-04 11:27 PM Link | Quote
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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Posted on 07-03-04 12:27 AM Link | Quote
I haven't done algebra in a long time, so this might be completely off:
(x+4-12i)(x+4+12i) = 0
JJ64

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Posted on 07-03-04 01:01 AM Link | Quote
It has to cross the x-axis (unless it's x=ay
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Posted on 07-03-04 03:09 AM Link | Quote
635

# x 2 + 11 x 2 + 10 x 2 + 9...
Heian-794

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Posted on 07-03-04 03:18 AM Link | Quote
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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Posted on 07-03-04 05:30 AM Link | Quote
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.

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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.
KATW

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Posted on 07-03-04 06:27 AM Link | Quote
okay... seems simple enough

A>D>C>F>B>E

Or

A >= D>C >= F > B >= E

>= is greater than or equal to
JJ64

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Posted on 07-03-04 08:05 PM Link | Quote
"Is greater than or equal to". That's a good catch.

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Question 35 (1 point)-

Solve this equation:

|3x+40|+10=135


(edited by JJ64 on 07-03-04 11:32 AM)
Grey the Stampede

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Posted on 07-03-04 08:22 PM Link | Quote
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).
JJ64

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Posted on 07-03-04 08:31 PM Link | Quote
And Grey goes further into the lead.

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Question 36 (1 point)-

Solve the system of equations:

x+4y=40
6x+12=20y
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