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 Word Problems! Jan 15 realy hard shit idk

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PostSubject: Word Problems! Jan 15 realy hard shit idk   Tue Sep 20, 2011 1:29 am

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Ok.. 6 images in this album
http://imgur.com/a/RwCzp


Last edited by poo on Mon Jan 16, 2012 3:24 am; edited 9 times in total
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PostSubject: Re: Word Problems! Jan 15 realy hard shit idk   Thu Sep 22, 2011 9:41 pm

no one's smart enuf
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PostSubject: Re: Word Problems! Jan 15 realy hard shit idk   Thu Sep 22, 2011 9:52 pm

I did my best

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My best isn't that good

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PostSubject: Re: Word Problems! Jan 15 realy hard shit idk   Sat Sep 24, 2011 4:26 am

1. Lakers wants to fence in a pimp ass huge ass rectangular crib for his baby. The crib is to be 5 ft longer than wide. If Lakers can afford at most 146 ft. of wire to build the fence, what is the greatest possible width for the pimp ass crib?
n: width
n+5: length
2(n) + 2(n+5) = 146
4n + 10 = 146
4n = 136
width: n = 34 ft
length: n+5 = 39 ft


2. Find four consecutive integers whose sum is 138
o + (o+1) + (o+2) + (o+3) = 138
4o + 6 = 138
4o = 132
o = 33
integers: 33, 34, 35, 46


3 Find three consecutive odd integers whose sum is between 135 and 147.
135 < v + (v+2) + (v+4) < 147
135 < 3v + 6 < 147
129 < 3v < 141
43 < v < 47
v = 45
integers: 45, 47, 49


4. Find the measure of two angles whose sum is between 85 and 90 degrees if the measure of the second is 4 more than 3 times the measure of the first.
first: a
second: 3a +4
85 < a+ (3a+4) < 90
85 < 4a +4 < 90
81 < 4a < 86
20.25 < a < 21.5
first: a = 21 degrees
second: 3a+4 = 67 degrees


6. Two fast ass warrior dashers leave Denver at 9:00 AM one flying east at a speed of 50 km/h greater than the other, which is traveling west. At 11:00 AM the warrior dashers are 2,500 km apart. Find their speeds.
L: speedwest
L+50: speedeast
9 to 11 am = 2 hours
2500 = 2(L) + 2(L+50)
2500 = 4L + 100
2400 = 4L
speedwest: L= 600 km/hr
speedeast: L+50 = 650 km/hr


7. It takes a warrior dasher 40 minutes longer to dash from Black Forest to Rocky Road at 525 mi/h than it does to return at 600 mi/h. How far are Black Forest and Rocky Road part?
y: time
distance = y*speed
525 mi/h = 8.75mi/min
600 mi/h = 10 mi/min
8.75*(y+40) = 10y
8.75y + 350 = 10y
350 = 1.25y
y = 280 min
distance = y*10 = 280*10= 2800 mi

now go do your hw

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PostSubject: Re: Word Problems! Jan 15 realy hard shit idk   Sat Sep 24, 2011 4:47 am

Von is so smart
No errors from what I can see

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PostSubject: Re: Word Problems! Jan 15 realy hard shit idk   Sat Sep 24, 2011 4:59 am

i already turned this in last wee
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PostSubject: Re: Word Problems! Jan 15 realy hard shit idk   Sat Sep 24, 2011 5:01 am

Does anyone know Chemistry? Nomenclature, to be precise?

Oh and Von, I have a question. Can you please explain to me what the point of Significant Figures are? I know they are very important in the medicine field, and I get the concept (round the product's number to the lowest amount of digits one of the reactants has), but I just don't get what's their overall role.

Thank god I'm taking Alg 2 next semester. But I'm also taking AP History. Haaa...
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PostSubject: Re: Word Problems! Jan 15 realy hard shit idk   Sat Sep 24, 2011 5:04 am

What about sigfigs?
theyre easy

.00235 There are 3 sigfigs
you gotta get the decimal to make a # between 1 and 10
so you would put the decimal to
2.35
and you would count all the digits
so thats 3 sig figs

but if its from the right
1524000.
you move to the left
1.524000
you count all the digits so its
7 sigfigs
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PostSubject: Re: Word Problems! Jan 15 realy hard shit idk   Sat Sep 24, 2011 5:16 am

Beto wrote:

Oh and Von, I have a question. Can you please explain to me what the point of Significant Figures are? I know they are very important in the medicine field, and I get the concept (round the product's number to the lowest amount of digits one of the reactants has), but I just don't get what's their overall role.
In theory, you can't multiple two numbers and get a value more precise than what you started with. So if you only know something within 1 significant digit, even if you multiple by something more precise (1.0000000001), you can only be sure of one of the digits of the product (the leftmost).

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PostSubject: Re: Word Problems! Jan 15 realy hard shit idk   Sat Sep 24, 2011 5:16 am

Cruise, I meant what's the point, hahaha. I get the math, I just don't get what it is used for. But thanks either way bro. Very Happy

edit: Haha, yeah Nova. Same. I mean, what's it used for?? XD Thanks anyway though. ^^
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PostSubject: Re: Word Problems! Jan 15 realy hard shit idk   Sat Sep 24, 2011 5:21 am

You use it in the real world when you write reports.

But I rarely see it done, lol. Usually people will present their raw data which has the right sig figs with no modifications. When they do round, it's usually to two decimal points. I've never lost points for putting too many sig figs except in my mechanics class.

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PostSubject: Re: Word Problems! Jan 15 realy hard shit idk   Sat Sep 24, 2011 5:37 am

2 + 2 = chair

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PostSubject: Re: Word Problems! Jan 15 realy hard shit idk   Sat Sep 24, 2011 5:45 am

I see Nova. Thank you I just wondered because at times, the way the number was rounded, it completely threw me off (e.g. can only have one sig fig, even though you get 1600, you have to go to 2000). I got it, it's easy, but just the point confused me. Thank you :]

Viz, it makes so much sense now that you put it that way!
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PostSubject: Re: Word Problems! Jan 15 realy hard shit idk   Sat Sep 24, 2011 4:33 pm

poop wrote:
i already turned this in last wee
good! you should be doing your hw yourself anyways

Beto wrote:
Does anyone know Chemistry? Nomenclature, to be precise?
mm-hmm

Beto wrote:

Oh and Von, I have a question. Can you please explain to me what the point of Significant Figures are?
Lets say you are 16 years 2 months and 5 days old and your grandmother thinks shes about 70 (she forgot her exact birthday and age). Your grandmother's claimed age is only an estimate (may not the be exact theoretical number).

If we ask your granny at what age she became your grandmother (the age difference between you two), she cannot tell us that it is 53 years, 9 months and 26 days. That is because even though your age is exact, your grandmother's age wasn't exact and the imprecision from granny's age carries on through the calculation.

I'm not sure how helpful my example was hihi. But that's what sig figs are for, its the give you an idea of how exact a number is. It becomes more important when you are presenting data from a serious clinical study.
Irl, I've only had to be careful with sig figs in 2-3 courses
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PostSubject: Re: Word Problems! Jan 15 realy hard shit idk   Mon Nov 07, 2011 8:36 pm

Updated

http://www.sn4ck.com/t1513-word-problems-nov-7-need-quick-help-yo#34854
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PostSubject: Re: Word Problems! Jan 15 realy hard shit idk   Mon Nov 07, 2011 9:38 pm

My boy Cruise be doing matrix multiplications
Are you in a competition level math course?

Which questions specifically do you need help setting up equations for?

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PostSubject: Re: Word Problems! Jan 15 realy hard shit idk   Mon Nov 07, 2011 10:25 pm

medical dosages.

funny cause it's only simple conversions and I can't do it right.
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PostSubject: Re: Word Problems! Jan 15 realy hard shit idk   Mon Nov 07, 2011 10:47 pm

I dont understand any of them
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PostSubject: Re: Word Problems! Jan 15 realy hard shit idk   Tue Nov 08, 2011 2:40 am

Heey I remember doing these a while back. Matrix multiplication is Algebra 2 isnt it? Good luck Cruise
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PostSubject: Re: Word Problems! Jan 15 realy hard shit idk   Tue Nov 08, 2011 2:58 am

i just need help with
http://i.imgur.com/7swYe.jpg
http://i.imgur.com/GLgBe.jpg
http://i.imgur.com/7gJbe.jpg #7
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PostSubject: Re: Word Problems! Jan 15 realy hard shit idk   Sat Nov 19, 2011 2:24 am

Updated
http://www.sn4ck.com/t1513-word-problems-nov-18-3-quadratic-problems#34854
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PostSubject: Re: Word Problems! Jan 15 realy hard shit idk   Mon Jan 16, 2012 3:25 am

UPDATED
i know no one is helping me

http://www.sn4ck.com/t1513-word-problems-jan-15-realy-hard-shit-idk
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PostSubject: Re: Word Problems! Jan 15 realy hard shit idk   Mon Jan 16, 2012 3:35 am

go do your homework kay!
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PostSubject: Re: Word Problems! Jan 15 realy hard shit idk   Mon Jan 16, 2012 11:13 pm

oh gawd
i fell asleep today and i now have half of these to do
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PostSubject: Re: Word Problems! Jan 15 realy hard shit idk   Tue Jan 17, 2012 12:11 am

go go power rangers
I'd help but I have an exam tomorrow
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