Don't.Mess.With.Kes<3 Posted November 9, 2011 Share Posted November 9, 2011 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. Link to comment Share on other sites More sharing options...
Buggernut Posted November 9, 2011 Share Posted November 9, 2011 No it's wrong. Link to comment Share on other sites More sharing options...
MrsCanuck Posted November 9, 2011 Share Posted November 9, 2011 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 Link to comment Share on other sites More sharing options...
Buggernut Posted November 9, 2011 Share Posted November 9, 2011 Perfect! Thank you so much. Link to comment Share on other sites More sharing options...
Try Again Posted November 9, 2011 Share Posted November 9, 2011 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? Link to comment Share on other sites More sharing options...
Don't.Mess.With.Kes<3 Posted November 9, 2011 Share Posted November 9, 2011 high-school offers little guidance on how to use sources for a research essay, footnotes, citations etc... 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... Link to comment Share on other sites More sharing options...
JonnyDraft Posted November 9, 2011 Share Posted November 9, 2011 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? Link to comment Share on other sites More sharing options...
Master 112 Posted November 9, 2011 Share Posted November 9, 2011 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? Link to comment Share on other sites More sharing options...
Kesler's Happy Dance v2.0 Posted November 9, 2011 Share Posted November 9, 2011 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? Link to comment Share on other sites More sharing options...
Master 112 Posted November 9, 2011 Share Posted November 9, 2011 So I don't have to change anything on it? Link to comment Share on other sites More sharing options...
Remy Posted November 9, 2011 Share Posted November 9, 2011 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. Link to comment Share on other sites More sharing options...
JonnyDraft Posted November 9, 2011 Share Posted November 9, 2011 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? Link to comment Share on other sites More sharing options...
Vapourstreak Posted November 9, 2011 Share Posted November 9, 2011 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? Link to comment Share on other sites More sharing options...
Master 112 Posted November 9, 2011 Share Posted November 9, 2011 Looks pretty balanced to me! Link to comment Share on other sites More sharing options...
ckamo Posted November 10, 2011 Share Posted November 10, 2011 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. Link to comment Share on other sites More sharing options...
Vapourstreak Posted November 10, 2011 Share Posted November 10, 2011 Okay, thanks. Link to comment Share on other sites More sharing options...
MillerGenuineDraft Posted December 13, 2011 Share Posted December 13, 2011 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 Link to comment Share on other sites More sharing options...
ckamo Posted December 13, 2011 Share Posted December 13, 2011 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. Link to comment Share on other sites More sharing options...
Minion Posted December 14, 2011 Share Posted December 14, 2011 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! Link to comment Share on other sites More sharing options...
Baercheese Posted December 14, 2011 Share Posted December 14, 2011 Studying for my stats finals after not showing up for class in a month Not a good time Link to comment Share on other sites More sharing options...
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