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Re: Math Problems Thread

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Precisonfire23 is not online. Precisonfire23
Joined: 23 Jul 2012
Total Posts: 8153
19 Mar 2016 10:29 AM
I'll be here all day folks, coming up with original and genuine math problems for you guys to solve and to test your intelligence!

Alright,

Question #1
A 10 foot tree casts a shadow that is 13 feet long. The trunk of the tree is 7 feet tall. What will be the length of the trunk's shadow at the same time of day?
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Precisonfire23 is not online. Precisonfire23
Joined: 23 Jul 2012
Total Posts: 8153
19 Mar 2016 10:38 AM
I thought RP was the pinnacle of intelligence [among this godforsaken forum]. Show the rest of the world your brilliance. I already solved the problem and have the answer.
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PurringThunder is not online. PurringThunder
Joined: 23 Apr 2014
Total Posts: 16465
19 Mar 2016 10:39 AM
Proportions, is it?
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Precisonfire23 is not online. Precisonfire23
Joined: 23 Jul 2012
Total Posts: 8153
19 Mar 2016 10:41 AM
Yes ma'am.
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PurringThunder is not online. PurringThunder
Joined: 23 Apr 2014
Total Posts: 16465
19 Mar 2016 10:41 AM
"I thought RP was the pinnacle of intelligence"
Wow, way to dissuade people from answering.
Get a question wrong? What a complete and utter idiot you are! Hahahahaha!
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PurringThunder is not online. PurringThunder
Joined: 23 Apr 2014
Total Posts: 16465
19 Mar 2016 10:42 AM
9.1 feet.
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Precisonfire23 is not online. Precisonfire23
Joined: 23 Jul 2012
Total Posts: 8153
19 Mar 2016 10:44 AM
Well, I meant it as a comparison to the other sub-forums like OT, C7G, etc. We're the smartest bunch out of the lot of them, but I didn't mean that if you get a question wrong, that you're an idiot. Everyone makes natural mistakes, its human. The only person that might be exempt from this is Pruz.
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Precisonfire23 is not online. Precisonfire23
Joined: 23 Jul 2012
Total Posts: 8153
19 Mar 2016 10:45 AM
Correct!

Question #2
If the scale factor between two similar rectangles' dimensions is 3, by what number would you need to multiply the original rectangle's AREA by in order to get the new rectangle's area? Explain the rule.
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PurringThunder is not online. PurringThunder
Joined: 23 Apr 2014
Total Posts: 16465
19 Mar 2016 10:51 AM
9?
Squaring the scale factor seems to work.
If the bigger one is the original one, though, it would be 1/9.
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benzo2 is not online. benzo2
Joined: 02 Jun 2008
Total Posts: 18020
19 Mar 2016 10:51 AM
The BS taught by school isn't intelligence, it's mostly nonsense you will never need nor use. That's just reading and regurgitation.
Intelligence is knowing how to make that information/knowledge actually relevant to life.
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Precisonfire23 is not online. Precisonfire23
Joined: 23 Jul 2012
Total Posts: 8153
19 Mar 2016 10:58 AM
These are questions from my midterm [which I got a 62 on because my math teacher sucks.] Although, I did get a higher grade than the third smartest girl in my grade level so... yeah. :D

I completely agree Benzo, except some of these will help me and in pursuing my architectural career. Or I'll just become a dentist because they make bank.

But, yes Purring. Nine is the correct answer.

Question #3
Suppose that you deposit $750.00 in an account paying 4% compound interest, with interest compounded annually, how much will your account earn over the first five years?
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PurringThunder is not online. PurringThunder
Joined: 23 Apr 2014
Total Posts: 16465
19 Mar 2016 11:00 AM
Eeew, compound interest.
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Precisonfire23 is not online. Precisonfire23
Joined: 23 Jul 2012
Total Posts: 8153
19 Mar 2016 11:02 AM
I know. I prefer simple interest. I got this problem wrong because our teacher decided to take a day off instead of teaching curriculum and she's only been here for three months.
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PurringThunder is not online. PurringThunder
Joined: 23 Apr 2014
Total Posts: 16465
19 Mar 2016 11:04 AM
I "learned" about compound interest a year or more ago.
I think there's some sort of equation or whatever that you have to plug stuff into that I threw into the recycling bin last year and don't want to search online because compound interest calculations are gross
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Precisonfire23 is not online. Precisonfire23
Joined: 23 Jul 2012
Total Posts: 8153
19 Mar 2016 11:08 AM
Compound Interest Formula:
I = p( 1 + r )ᵗ

P = principle [750], r = rate [0.04], t = time [5]
Now you have all the resources to solve the problem.
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PurringThunder is not online. PurringThunder
Joined: 23 Apr 2014
Total Posts: 16465
19 Mar 2016 11:14 AM
$912.49
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Precisonfire23 is not online. Precisonfire23
Joined: 23 Jul 2012
Total Posts: 8153
19 Mar 2016 11:24 AM
Correct.

Question #4
Luke invested $2,400 in each of two accounts. The first account pays 3% simple interest. The second account pays 3%, compound interest with interest compounded annually. After 10 years, how much more will the second account be worth than the first account?
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