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Stuck On Homework? **The Homework Thread v0.01** is here!

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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.

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

angry.gif

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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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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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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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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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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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?

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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.

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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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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.

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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!

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