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#2581 Don't.Mess.With.Kes<3

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Posted 08 November 2011 - 10:28 PM

Sadly, we can't simply stop assigning homework. That's an easy way to lose our job, and the mere pittance of a paycheque that comes with it.

Anyone stuck on English homework? I happen to be a BCCT certified high school English teacher. As of last year. Stop complaining, it's free help.

well this is kind of english related I guess, for my history essay my prof just said that I need to include footnotes and a bibliography. It doesn't say whether it's MLA, APA etc. Should I just assume it's MLA?
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#2582 Buggernut

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Posted 08 November 2011 - 10:37 PM

No it's wrong. :(

Second try:

y = f(x) = x(9 cos x - 5 sin x)
y' = f'(x) = 9 cos x - 5 sin x - 9x sin x - 5x cos x

f(3pi) = -27pi
f'(3pi) = 15pi - 9

Therefore the tangent line is:

y = (15pi - 9)x + C
-27pi = (15pi - 9)3pi + C
C = -45pi^2

y = (15pi - 9)x - 45pi^2
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#2583 MrsCanuck

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Posted 08 November 2011 - 10:41 PM

Second try:

y = f(x) = x(9 cos x - 5 sin x)
y' = f'(x) = 9 cos x - 5 sin x - 9x sin x - 5x cos x

f(3pi) = -27pi
f'(3pi) = 15pi - 9

Therefore the tangent line is:

y = (15pi - 9)x + C
-27pi = (15pi - 9)3pi + C
C = -45pi^2

y = (15pi - 9)x - 45pi^2


Perfect! Thank you so much. :)
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#2584 Buggernut

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Posted 08 November 2011 - 10:45 PM

Perfect! Thank you so much. :)

Not bad for somebody who hasn't done any calculus since the early 90's, eh?
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#2585 Try Again

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Posted 08 November 2011 - 11:12 PM

well this is kind of english related I guess, for my history essay my prof just said that I need to include footnotes and a bibliography. It doesn't say whether it's MLA, APA etc. Should I just assume it's MLA?


high-school offers little guidance on how to use sources for a research essay, footnotes, citations etc...

Posted Image

Remy could you tell us why English teachers have so much focus on how to interpret books, and novels
and rarely little emphasis on academic writing in the form of footnotes, citations, methods of research, establishing a thesis and supporting it, business writing too etc...

English at the high school levels seems to all be about writing about a Theme of some book you read. Honestly the practicality of that after high school is minimal.

I understand that those assignments teach writing fundamentals but still...
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#2586 Don't.Mess.With.Kes<3

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Posted 08 November 2011 - 11:19 PM

high-school offers little guidance on how to use sources for a research essay, footnotes, citations etc...

Posted Image

Remy could you tell us why English teachers have so much focus on how to interpret books, and novels
and rarely little emphasis on academic writing in the form of footnotes, citations, methods of research, establishing a thesis and supporting it, business writing too etc...

English at the high school levels seems to all be about writing about a Theme of some book you read. Honestly the practicality of that after high school is minimal.

I understand that those assignments teach writing fundamentals but still...

my high school never taught me footnotes...and my history teacher just assumed we all knew what it was. arghh

Edited by Don't.Mess.With.Kes<3, 08 November 2011 - 11:19 PM.

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#2587 JonnyDraft

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Posted 08 November 2011 - 11:23 PM

well this is kind of english related I guess, for my history essay my prof just said that I need to include footnotes and a bibliography. It doesn't say whether it's MLA, APA etc. Should I just assume it's MLA?


Usually Chicago - just e-mail your TA.
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"I'm all in favor of keeping dangerous weapons out of the hands of fools. Let's start with typewriters." Wright

"Men do make their own history, but they do not make it as they please, nor under conditions of their own choosing, but rather under circumstances which they find before them, under given and imposed conditions." Marx

"Sell a man a fish, he eats for a day, teach a man how to fish, you ruin a wonderful business opportunity." Marx

"I have more respect for a man who lets me know where he stands, even if he's wrong, than the one who comes up like an angel and is nothing but a devil." Malcolm X

#2588 One one two

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Posted 09 November 2011 - 12:32 AM

Might be a dumb question but...


I'm supposed to be balancing Skeleton Equations.

Now then, here's the question:

MgCl2 --> Mg + Cl2


... What exactly am I supposed to be balancing here? :unsure:
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#2589 Kesler's Happy Dance v2.0

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Posted 09 November 2011 - 01:10 AM

Might be a dumb question but...


I'm supposed to be balancing Skeleton Equations.

Now then, here's the question:

MgCl2 --> Mg + Cl2


... What exactly am I supposed to be balancing here? :unsure:


You are suppose to make sure there are just as many Cl's on the left as there on the right same thing for Mg.
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#2590 One one two

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Posted 09 November 2011 - 01:12 AM

So I don't have to change anything on it?


Edited by One one two, 09 November 2011 - 01:14 AM.

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#2591 Remy

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Posted 09 November 2011 - 01:23 AM

If you're stuck on citations there are websites that can show you how to properly do it. You are best off to ask the teacher, if possible. Heck, let them know that the class needs it explained. Usually though, citations at the high school level are a formality to give practice. I wouldn't sweat too much.

As for focusing on theme rather than writing mechanics, that's because you're really learning analysis, and that is hugely important in anything you will ever do. Besides, writing mechanics are pretty boring. Just look up prosody if you want to see something really scary.
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#2592 JonnyDraft

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Posted 09 November 2011 - 01:48 AM

Might be a dumb question but...


I'm supposed to be balancing Skeleton Equations.

Now then, here's the question:

MgCl2 --> Mg + Cl2


... What exactly am I supposed to be balancing here? :unsure:


Looks pretty balanced to me!
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"I'm all in favor of keeping dangerous weapons out of the hands of fools. Let's start with typewriters." Wright

"Men do make their own history, but they do not make it as they please, nor under conditions of their own choosing, but rather under circumstances which they find before them, under given and imposed conditions." Marx

"Sell a man a fish, he eats for a day, teach a man how to fish, you ruin a wonderful business opportunity." Marx

"I have more respect for a man who lets me know where he stands, even if he's wrong, than the one who comes up like an angel and is nothing but a devil." Malcolm X

#2593 Vapourstreak

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Posted 09 November 2011 - 02:20 AM

Aspirin contains 60.0% carbon, 4.48% hydrogen, and 35.5% oxygen. It has a molecular mass of 180 g/mol. What are the empirical and molecular formula?


60.0g C = 1mol = 5 moles / 2 = 2.5*2 = 5
------- = 12.01

4.48g H = 1mol = 4 moles / 2 = 2*2 = 4
------- = 1.01

35.5g O = 1mol = 2 moles / 2 = 1*2 = 2
------- = 16.00

Empirical = C5H4O2


C = 5*12.01g/mol = 60.05gC5
H = 4*1.01g/mol = 4.04gH4
O = 2*16.00g/mol = 32.00gO2

= 96.09g C5H4O2

180/96.09 = 2
Molecular = C10H8O4


Did I do it right? Seems like rather high numbers.

Edited by Vapourstreak, 09 November 2011 - 02:21 AM.

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#2594 One one two

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Posted 09 November 2011 - 02:26 AM

Looks pretty balanced to me!



That's what I thought. :P


Thanks guys!
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#2595 ckamo

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Posted 09 November 2011 - 05:34 PM

Aspirin contains 60.0% carbon, 4.48% hydrogen, and 35.5% oxygen. It has a molecular mass of 180 g/mol. What are the empirical and molecular formula?


60.0g C = 1mol = 5 moles / 2 = 2.5*2 = 5
------- = 12.01

4.48g H = 1mol = 4 moles / 2 = 2*2 = 4
------- = 1.01

35.5g O = 1mol = 2 moles / 2 = 1*2 = 2
------- = 16.00

Empirical = C5H4O2


C = 5*12.01g/mol = 60.05gC5
H = 4*1.01g/mol = 4.04gH4
O = 2*16.00g/mol = 32.00gO2

= 96.09g C5H4O2

180/96.09 = 2
Molecular = C10H8O4


Did I do it right? Seems like rather high numbers.

You rounded your numbers too early, but your answer was really close.

As my Chem 11 teacher used to write at the top of my exams, "DROTS!!!!!" (don't round out too soon!)
Spoiler

Edited by ckamo, 09 November 2011 - 05:37 PM.

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#2596 Vapourstreak

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Posted 10 November 2011 - 02:41 AM

Okay, thanks. :)
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#2597 MillerGenuineDraft

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Posted 12 December 2011 - 10:56 PM

I have a question on derivatives in Calc 12.

Find an equation of the line TANGENT to the graph of y=sin x + 3 at x = pi (3.14 ... )

I know when it says a line NORMAL, that we find the negative reciprocal or what not.

Thanks :D
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#2598 ckamo

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Posted 13 December 2011 - 03:16 AM

Not really sure what your question is...
The tangent line is the line that touches your graph only once at the point they are asking for (pi). And if my memory is correct, the slope of the tangent line is just the 1st derivative of your equation.

Edited by ckamo, 13 December 2011 - 03:17 AM.

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#2599 Minion

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Posted 13 December 2011 - 09:41 PM

Physics 12 question:
Mimas, a moon of Saturn, has an orbital radius of 1.87*10^8m and an orbital period of about 23h. Use Newton's version of Kepler's third law and these data to find the mass of Saturn.

Edit: NVM I got it!

Edited by littlemissorangepenguin, 13 December 2011 - 10:46 PM.

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#2600 Baercheese

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Posted 13 December 2011 - 10:21 PM

Studying for my stats finals after not showing up for class in a month

Not a good time
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Johnny Gaudreau>any Casucks

Edler, Markstrom, Hansen, 2nd round pick 2014 to Islanders for Ryan Strome, 5th overall pick 2014

This is fairly even as well.

 


#2601 Try Again

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Posted 13 December 2011 - 10:29 PM

Studying for my stats finals after not showing up for class in a month

Not a good time


damn

and stats is some of the hardest sh*t too eh

why didnt u go lol
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#2602 Baercheese

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Posted 13 December 2011 - 10:33 PM

damn

and stats is some of the hardest sh*t too eh

why didnt u go lol

and my prof is some old man that can't teach :picard:

honestly just didnt feel like it

also didnt go to math and econ

I'm very much regretting that decision right now
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3499h5x.jpg
Johnny Gaudreau>any Casucks

Edler, Markstrom, Hansen, 2nd round pick 2014 to Islanders for Ryan Strome, 5th overall pick 2014

This is fairly even as well.

 


#2603 Try Again

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Posted 13 December 2011 - 10:41 PM

and my prof is some old man that can't teach :picard:

honestly just didnt feel like it

also didnt go to math and econ

I'm very much regretting that decision right now


damn
and your doing that high level calculation sh*t

i went to all my econ 101 classes with gateman but i just sat there Posted Image
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#2604 LostViking

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Posted 13 December 2011 - 10:43 PM

Not sure how many will see this, but just wanted to let people know I don't mind helping people understand their homework/studying better. I have a degree in Business (Accounting), was a top student, tutored about a dozen peers in University, and worked a semester as a TA, grading assignments and the like. I won't be coming back to check this thread, so you'll have to PM me, but I'm happy to help.

Subjects I have a strong knowledge of:
Corporate finance
Financial math
Statistics
Management science
Financial accounting
Quantitative analysis/research
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#2605 Baercheese

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Posted 13 December 2011 - 10:59 PM

Not sure how many will see this, but just wanted to let people know I don't mind helping people understand their homework/studying better. I have a degree in Business (Accounting), was a top student, tutored about a dozen peers in University, and worked a semester as a TA, grading assignments and the like. I won't be coming back to check this thread, so you'll have to PM me, but I'm happy to help.

Subjects I have a strong knowledge of:
Corporate finance
Financial math
Statistics
Management science
Financial accounting
Quantitative analysis/research

I would ask you but I don't even know what's gonna be on the test

so screwed


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Johnny Gaudreau>any Casucks

Edler, Markstrom, Hansen, 2nd round pick 2014 to Islanders for Ryan Strome, 5th overall pick 2014

This is fairly even as well.

 


#2606 MrsCanuck

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Posted 13 December 2011 - 11:14 PM

One last business final tomorrow! SO excited to be finished. Then a month of pure relaxation.
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#2607 Buggernut

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Posted 14 December 2011 - 12:03 AM

I have a question on derivatives in Calc 12.

Find an equation of the line TANGENT to the graph of y=sin x + 3 at x = pi (3.14 ... )

I know when it says a line NORMAL, that we find the negative reciprocal or what not.

Thanks :D


y = sin x + 3
y' = cos x

y(pi) = 3
y'(pi) = -1

So the tangent line is:

y = (-1)x + C
y(pi) = -pi + C = 3
C = pi + 3

y = -x + pi + 3

nb. I am old and rusty, so take my answer with a grain of salt.
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#2608 SarcasticPerson

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Posted 14 December 2011 - 12:34 AM

Anyone taken Poli-101/Canadian Politics? Specifically at UVic but any little word of advice would be helpful on what to focus on, details to remember, or how to manage time and write essays effectively.
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#2609 Tortorella's Rant

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Posted 10 June 2012 - 04:35 PM

Math Question! This is about grade a grade 10/11 question. I had a middle school teacher tackle it but she didn't have/know the formula so she couldn't show me.

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

Proportional Reasoning (formula required)

A tennis ball is served from a height of 8 feet and just clears the net that is 3 feet high. The server is 40 feet from the net. If the ball travels in a straight path, how far on the other side of the net does the ball land?

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

Much appreciated if someone could explain it for me. I'm terrible at math :sadno:
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#2610 flapjacks

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Posted 10 June 2012 - 04:56 PM

Math Question! This is about grade a grade 10/11 question. I had a middle school teacher tackle it but she didn't have/know the formula so she couldn't show me.

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

Proportional Reasoning (formula required)

A tennis ball is served from a height of 8 feet and just clears the net that is 3 feet high. The server is 40 feet from the net. If the ball travels in a straight path, how far on the other side of the net does the ball land?

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

Much appreciated if someone could explain it for me. I'm terrible at math :sadno:


Hey, so basically this just dealing with similar triangles and using proportions.

You know that the server is 8 feet high, and the net is 3 feet high. Assuming the server serves the ball linearly, it clears just above the net. You know that the distance the server is from the net is 40 feet. So if you draw your triangle:

Posted Image
You're trying to find the overall distance, which I've labelled as L. So then the distance from where the ball lands and the net is considered L-40. The property of similar triangles is basically using ratios, where the smaller triangle is proportional to the larger triangle (or vice versa). So if you wrote it out, you would have:

3/(L-40) = 8/L

The ratios can be switched around, but have to "match" as they are proportional (ie. if you write length/height for one ratio, do so for the other ratio).

Through cross-multiplication, you can now solve for L (I'm assuming you can do algebra here) to get L = 64 feet. (Edit: Whoops, it wants how far the ball is from the net, so just take L-40 = 24 feet.)

Hope that helps, I was bored lol. IMO the most important part is knowing how to draw the triangle. The rest is a piece of cake.

If my post wasn't too clear, you can also have a look-see here: http://www.math.com/...s/S1U2L4DP.html (I just googled it, but it should help if you don't understand)

Edited by rebob, 10 June 2012 - 04:59 PM.

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