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Hard Question

by sxk1693 » Wed Jan 02, 2013 5:06 pm

How do you approach these questions instead of graphing it all the time:

How many ordered pairs (x,y) are solutions to the equation 5x+3y<40 where x,y are integers and 0<y<x<9? Answer:14

HIGHS 2013 MEETS:
NS: 220(TMSCA STATE)
CA: 232(B)
MA: 274(District)
SC: 220(A)
CS: 212(VCM1)

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Re: Hard Question

by 101dalmatians » Wed Jan 02, 2013 5:34 pm

Last edited by 101dalmatians on Wed Jan 02, 2013 5:39 pm, edited 2 times in total.

I guess this signature really doesn't matter now that I know that the forum is going down soon...

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Re: Hard Question

by darksaber21 » Wed Jan 02, 2013 5:36 pm

I would test out possible points. It is not as tedious as you think, if you know what you're doing that is.

First, to find out how many points are possible when y = 1
[unparseable or potentially dangerous latex formula]
[unparseable or potentially dangerous latex formula]
[unparseable or potentially dangerous latex formula]
So, 6 possible points there. (2, 3, 4, 5, 6, and 7)

We continue when y = 2:
[unparseable or potentially dangerous latex formula]
So 4 possible points there (3, 4, 5, and 6)

When y = 3:
[unparseable or potentially dangerous latex formula]
So 3 possible points (4, 5, and 6)

When y = 4:
[unparseable or potentially dangerous latex formula]
So one possible point (5)

Add them all up, and we get 14 points total.

-----------------------------------------------------------

The inequality can be rearranged to be:
[unparseable or potentially dangerous latex formula]

Since y needs to be less than x, we can start off with y = 1 and see how many x values within the interval (and greater than y) satisfies the inequality.

I really can't think of another way, yet.

Now I know the stakes, and I'm willing to show what I gots. I will see you all at state for the first and final time, so let's end the year with a bang! :)
MTHS - Class 5A, District VII, Region I

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Re: Hard Question

by 101dalmatians » Wed Jan 02, 2013 7:27 pm

What the hell now is a POLITE NUMBER????
I am so fed up with these numbers - i mean numbers have NO feelings!!!!

But anyway... Back to my question...

Can someone please help me with these problems from 2011 District I?

31. -> This one is a circle problem...

39. Find the sum of the series [unparseable or potentially dangerous latex formula] (to the nearest thousandth)
A. 7.400
B. 7.389
C. 7.356
D. 7.292
E. 7.267

What is the pattern to this series???

41. ->probability....

51. -> Slant asymptote problem - keeps coming - so annoying!
57 -> Just tell me the method - i have NO NO CLUE !!!!!!
60. -> what is this supposed to mean - aren't there only 3 faces unseen?

Thanks...

I guess this signature really doesn't matter now that I know that the forum is going down soon...

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Re: Hard Question

by PokémonMaster » Wed Jan 02, 2013 7:42 pm

UIL C 2013-14

NS: 298
Calculator: 240
Math: 282
Science: disheartening

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Re: Hard Question

by darksaber21 » Wed Jan 02, 2013 7:52 pm

Now I know the stakes, and I'm willing to show what I gots. I will see you all at state for the first and final time, so let's end the year with a bang! :)
MTHS - Class 5A, District VII, Region I

darksaber21: Celebrated Spammer; Posts: 477; Joined: Tue May 29, 2012 6:20 pm; Location: Arlington, TX

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Re: Hard Question

by darksaber21 » Wed Jan 02, 2013 8:11 pm

Now I know the stakes, and I'm willing to show what I gots. I will see you all at state for the first and final time, so let's end the year with a bang! :)
MTHS - Class 5A, District VII, Region I

darksaber21: Celebrated Spammer; Posts: 477; Joined: Tue May 29, 2012 6:20 pm; Location: Arlington, TX

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Re: Hard Question

by 101dalmatians » Wed Jan 02, 2013 8:13 pm

I guess this signature really doesn't matter now that I know that the forum is going down soon...

101dalmatians: Ubiquitous Spammer; Posts: 1013; Joined: Mon Aug 27, 2012 6:30 pm; Location: Dallas, Tx.

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Re: Hard Question

by darksaber21 » Wed Jan 02, 2013 8:19 pm

Now I know the stakes, and I'm willing to show what I gots. I will see you all at state for the first and final time, so let's end the year with a bang! :)
MTHS - Class 5A, District VII, Region I

darksaber21: Celebrated Spammer; Posts: 477; Joined: Tue May 29, 2012 6:20 pm; Location: Arlington, TX

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