Homework 911, v. 2011
For times when you need HELP!!!
(You can read the 2010 edition here.)
Date: January 16, 2011
Categories: Life, The Universe
Comments RSS TrackBack 46 comments
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LittleBasementKitten
in January 17th, 2011 @ 12:09Um. The link connects to a chess game…? Also, first post?
Ugh. Negative exponents. Someone kill me now.
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Cello-Playing Mathematician (AKA Kyra)
in January 17th, 2011 @ 22:16They’re a bit confusing at first, but once you get the hang of them they’re pretty easy. Do you want any help?
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shadowfire
in January 17th, 2011 @ 22:31If the exponent is even, negate it. If the exponent is odd, keep it negative. At least, I think that’s how it goes.
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Tesseract
in January 17th, 2011 @ 23:23Shadowfire – Nope, sorry. I think you’re thinking of the effect of exponents on negative numbers.
LBK – Basically, you just take the number to the negative exponent and put it on the bottom of a fraction, with a positive exponent.
2^(-3) = 1/(2^3) = 1/8
11^(-2) = 1/(11^2) = 1/121
x^(-n) = 1/(x^n)
Get it?
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1.3.1
LittleBasementKitten
in January 18th, 2011 @ 07:36Yup, I got it. It’ just that we had problems like this:
5x^(-3)y^(2) [2xy^(2)]^(-2)
—————- x ——————
x^(5)y^(-1) xyThey were trying my patience. But I’ve got it down now. That’s everyone!
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1.3.1.1
oobatooba
in January 18th, 2011 @ 17:31So…fun…looking! I find fraction exponents cooler though…
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bookgirl_me
in January 18th, 2011 @ 10:04*sigh* I need 600 words on why people should read Shakespeare in english class (as foreign language). Usually I’d been full of answers but I need 600 words as in if I only have 500, I’ll get a B (this all stems from my tendency not to do homework and is technically my fault but I’m trying to blame the assignment so shh!). Otherwise I’d do a checklist or something more humorous but I’m kind of stressed lately. And I have latin, french and spanish homework and I need to study for chem, physics and latin and something else that I’m repressing just now and I think I screwed up on math and capoeira starts in less than an hour and after that I need to shower and go to bed and my library books are overdue and oh isn’t this january hustle for good grades so cake-y?
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Beedle the Bard
in January 18th, 2011 @ 16:31How about this: Shakespearean language gives an insight to the history of the English language, and knowing the history behind modern English can help students understand it better.
That’s sort of a cake answer, because you shouldn’t confuse students learning modern English with Elizabethan English, but you can use it as a filler.
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oobatooba
in January 18th, 2011 @ 17:28How about: people would read Shakespere so they can write 600 words on it in English class. If you were particularly verbose, you could probably stretch that to 600 word…
sorry, that was really unhelpful. People should read Shakespere because it’s awesome and has lots of people hiding behind bushes.
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bookgirl_me
in January 19th, 2011 @ 13:30Okay… so I’ve just got to write 63 more words. It’s actually about why to read Shakespeare, but there are deserted islands, it mentions that there are “sword-fights, dramatic deaths and monologues, usually by morally challenged characters with some mental instabilities and violent inclinations.”, that Elizabethan english is grammatically similar to german (with a lot of wishful thinking), and- got it!
It’s one of the few essay topics where the context involves aforementioned overextended deserted island metaphors, a side dig at certain writer and I can basically derail from the topic as much as I want because if there’s anything interesting to say, Shakespeare already included it in one of his plays.
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Mikazuki
in January 19th, 2011 @ 17:59Does anyone know how to find the vertex of a parabola? Or what, exactly, the vertex of a parabola IS?
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Beedle the Bard
in January 19th, 2011 @ 18:47OH OH OH
I actually used this like, five times in math today.
You know that the form for a quadratic equation (one that forms a parabola) is ax^2+bx+c, right? The formula for the vertex is
-b
———
2a
A parabola looks like a giant U, so the axis of symmetry is the line that divides it perfectly in half vertically.
Let me know if you don’t understand that.
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5.1.1
Piggy
in January 19th, 2011 @ 19:31I believe that’s the equation for the axis of symmetry, Beedle.
The vertex of a parabola is the very highest or the very lowest point–the tip of the U.
To find the X coordinate of the vertex, use the equation x = -b/2a, like Beedle said. Once you know that, plug that number in for x in the original equation in order to find the Y coordinate.
For instance, take the parabola defined by this equation: y = x^2-6x+15. To find the vertex:
1a. x = -b/2a (equation for the line of symmetry)
1b. x = -(-6)/2(1) (plug in a and b.)
1c. x = 3 (your X coordinate)
2a. y = x^2-6x+15 (the original equation)
2b. y = 3^2-6(3)+15 (plug in the X coordinate)
2c. y = 6 (and now you have your Y coordinate)So your vertex is (x,y)–in this case, (3,6).
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Beedle the Bard
in January 19th, 2011 @ 19:52Yeah, I forgot where I was going with that halfway through the explanation. My mind is not functioning properly today.
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5.2
Selenium the Quafflebird
in January 20th, 2011 @ 01:26Or, if it gives you the equation in y = ax^2 + bx + c form, you can use completing the square to find it in vertex form, which will give you (h,k) as the vertex.
Example:
y = x^2 + 6x – 3 [standard form]
y + 3 = x^2 + 6x [add 3 to both sides]
y + 3 + 9 = (x^2 + 6x + 9) [take half of 6, the ‘b’, and square that number. 1/2 x 6 = 3, 3^2 = 9. Add 9 to both sides.]
y + 12 = (x+3)(x+3) [factor (x^2 + 6x + 9)]
y + 12 = (x+3)^2 [rewrite using squared]
y = (x+3)^2 – 12 [add 12 to both sides]
^^ This is your equation in vertex form, y = a(x – h)^2 + kNow, look at your vertex form equation and find the (h,k).
h = -3 and k = -12, and that is the vertex of your parabola.
Hope this helps, and that it’s not too late.
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5.3
Mikazuki
in January 20th, 2011 @ 11:17Thanks, everyone! I think I’m beginning to grasp the concept, and that helped a lot, so yeah, thanks! (I guess I should explain at this point that my homework was to work for an hour on this online math course thing I’m doing; my teacher doesn’t help us at all- which is actually incredibly funny, because you can tell she doesn’t have any idea how to do the problem, but she pretends she does and goes on this explanation, and then you say “actually, we’re not doing that. It’s completely different” and she sort of deflates and says “oh, I think you should get Mrs P’s help with this, girls!” *smile smile* (said teacher I see, what, once every two weeks, and I really don’t feel bad for her since she feels for some reason that’s it’s okay to stick a few hyper seventh graders in a corner and expect them to do a lot of math) , but anyway; back to the point-and no, I had no idea about anything to do with parabola at the point when I was instructed to solve it. I think I got it now, though, although my understanding of things tends to be “I understand but actually, it’s completely different”; however, I got it right, so I’m going with I understood it correctly.
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Adeia
in January 19th, 2011 @ 22:54grr. midterms. Help!
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Tesseract
in January 20th, 2011 @ 15:32What topic?
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Trojan Tiger
in January 20th, 2011 @ 22:57What is a food item invented in one of the United States states? And a website with enough information to write a paragraph about. And can be made in less than an hour. Quickly, please!!
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oobatooba
in January 21st, 2011 @ 07:10Chocolate chip cookies. I don’t know a website but there are probably thousands of good ones, and hopefully you won’t get too many adds if you google it
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Trojan Tiger
in January 23rd, 2011 @ 12:47It worked! Thank you!
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bookgirl_me
in January 23rd, 2011 @ 12:38Anyone feel like doing my chemistry homework for me? Kidding, sort of. I have two problems which I sort of know the answer too but not really.
1) How much hydrogen do you need to reduce 100 grams of WO3? I got 3, 26 grams as answer but I’m not 100% sure.
2) Fe3SO4 + H2SO4 -> H2O plus either FeSO4 or Fe(SO4)3. Iunno which, though I’m leaning towards all of the above.
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Raynpho
in February 5th, 2011 @ 17:45My physics teacher: “Remember this? You might have used it in chemistry… you know, that class were you never knew what you were doing??
Me (to lab partner): “He knows…”
Gosh I keep trying to make text bold by putting asterisks around it, flrrggrhmph
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Kittymine, OSW, with various characters on BA
in January 26th, 2011 @ 20:39I am currently in the procces of working on an 8 to 10 page term paper on the topic of “why writer’s write”, with a focus on writing fiction. As of right now, my current idea is to go through the writing process, ask why on earth a person would want to labor through that process, and then give the reasons that drove various fiction writers to write. My only concern is that I won’t fill up 8 pages. I’m thinking of adding a brief history of (fiction?) writing in the beginning of the paper, but I’m not sure if that connects well enough. Any ideas/suggestions?
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Choklit Orange
in January 28th, 2011 @ 01:25What is a gerund, and why should I care enough to write five paragraphs about it?
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Koko's Apprentice
in January 28th, 2011 @ 08:03Google says that a gerund is “A noun formed from a verb” i.e. Swimming is fun
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oobatooba
in February 17th, 2011 @ 19:51As in “Verbing weirds things?”
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/gradster(1)/
in January 28th, 2011 @ 19:29Exploratorily speaking, is anyone here at the calculus level aside from Tesseract?
-A
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Lizzie
in January 28th, 2011 @ 19:55yes but rusty.
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Tesseract
in January 28th, 2011 @ 22:10Yes!
…oh wait. xD
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Cello-Playing Mathematician (AKA Kyra)
in January 28th, 2011 @ 23:18Yup, if IB HL 2 counts as “calculus…” I forgot a lot of the stuff I learned last year.
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bookgirl_me
in January 29th, 2011 @ 10:17Wait, what’s calculus? It sounds familiar…
Okay, that’s a no.
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oxlin
in February 28th, 2012 @ 20:43I’ve taken Calc 1 twice.
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Selenium the Quafflebird
in February 16th, 2011 @ 09:39For the hydrogen emission spectrum, which colours have the highest/lowest frequency and highest/lowest energy? Everything I find online has to do with wavelength.
Not sure if this will get answered by tomorrow morning when I need to turn it in, but it’s worth a try.
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Robert Coontz (Administrator)
in February 16th, 2011 @ 10:35Selenium:
For electromagnetic waves, including light, shorter wavelength = higher frequency = higher energy.
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Selenium the Quafflebird
in February 16th, 2011 @ 10:37Oh, thank you!
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Selenium the Quafflebird
in February 16th, 2011 @ 10:53It’s ironic, considering my ‘blog name, that my least favourite subject at the moment is chemistry.
SFTDP. Just thought I’d mention that.
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Adeia
in April 6th, 2011 @ 20:09Is two weeks too fast to do all of Romeo and Juliet in a 9th grade honors English Class? I think is….. Thoughts?
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starr
in November 18th, 2011 @ 20:59Ok MuseBlog, I need help.
I’m in MUN, and I have Serbia. I’m on the Historic Security Council and basically I’m in a pickle as to whether to decide to fight for the Rwandan Genocide being considered a genocide or not on April 18th, 1994 with not extensive knowledge yet but enough to know that the number of Tutsi’s being massacred is extremely high.
I know it’s a big issue, but any thoughts would be really appreciated! I’m trying to write my position paper… Because Serbia has relations with Russia, who are typically not supportive of intervention, I’m trying to defend not calling it a genocide, which would allow UNAMIR to bring in military forces into Rwanda… but it’s hard. Also, my brain is turning to mush.
Help? (Ps.. probably the wrong thread, but general tips on MUN for a first-timer would also be very appreciated, I know there are a lot of MBers who also do MUN.) Thanks!
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bookgirl_me
in December 11th, 2011 @ 15:41Calling all the spanish-speaking MBers: can I ask you an enormous favor? This is part of a presentation I need to give in front of my spanish class tomorrow and since I’ve been so busy prepping for Biology and panicking and procrastinating the result is atrocious. I’d really appreciate if you guys could read it through and point out the most glaring mistakes because I sort of gave up on accent halfway through and I’m too tired to think straight anymore and I never really understood when to use lo and when to use le anyway:
Dom Cobb es un „extractor“, un hombre que puede entrar en los sueños de otros por robar informatión y secretos. Por saber si esta soñando o despierto, tiene un tótem: un peonza que se cae en la realidad pero no cesa de girar en un sueño.
La pelicula empieza cuando Dom se despierta sur una playa desierta. Dos guardas le ponen a un viejo hombre que lo dice que le ha aguardo. Despues, la historia esta contado en un flashback.
Dom y su socio, Arthur, proban de volar información del negociante Saito, pero son sabotajidos de Mal, la ex-esposa de Dom, que es muerto pero lo persiguo en sus sueños porque Dom se sienta culpable de su suicido. La misión sale mal y no medran, pero Saito les ofrece de trabajar por lo y ayudarlo a conseguir el imposible: de plantar una idea en la cabeza de Robert Fischer, el hijo del rivalo de Saito que heredaré su imperio comercial. Dom acepta porque como paga, será exculpado de la sospecha de ha matado su esposa Mal y podrá volver a ver sus niños.Por realizar la misión, Dom compila un equipo que consiste en Arthur, Ariadne, una estudiante, Eames, un falsificador y Yusuf, un quÃmico. Yusuf produce un sedativo tan fuerte que pueden hacer un sueño de tres capas: en sueño en un sueño en un sueño. Pero la consecuencia es que cuando mueren en el sueño, no es despierten pero caeran en limbo.
La primero capa es una ciudad lluviosa. Allà se batan contra el subconsciente de Fischer que fue entrando de repulsar extractores y Saito es disparo. La segunda capa es un hotel. Dom simula de ser partido des subconsciente de Fischer por le persuadir a Fischer de hacer lo que diga. La tercera capa es una fortaleza en las montañas con una pieza fuerte que Fischer deba entrar por descubrir la idea. Pero Mal fusila Fischer y Saito muere antes de conseguirle. Por consiguiente Dom y Ariadne entran en el limbo, donde Dom contfronta a Mal. Ella quiere que Dom se mata por vivir con ella: quiere que el limbo es la réalidad. Este idea fue planta para Dom por descuido y nunca puede se perdonar por este causa. Pero consiguo una sorte de catarsis y se decide de permanecer en limbo para buscar Saito. Ariadne y Fischer vuelven a la fortaleza y Fischer descubre la idea.
Volvemos a la escena del principio: Dom persuade Saito, que habÃa envejecido, de volver con ello. Todo el equipo se diespierte y Dom vuelve en casa. Empieza de probar la realidad con su totem pero es descentrado para sus niños. La peonaza se menea, pero la pantalla se torna nergo ante de ver si la peonaza cae o permanece girando.
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Piggy
in December 11th, 2011 @ 16:28*para robar información
*para saber
*una peonza
*en una playa
*Dos guardas le traen a un viejo que le dice que le ha aguardado.
*((I don’t know what you mean by “volar información”. Should it be “robar información”? I guess “volar” is slang for that, but it doesn’t really make sense in context.))
*sabotajidos por Mal
*que está muerta pero le persigue
*Dom se siente culpable
*((I’m not sure what you mean by “no medran” either. Maybe “no tienen éxito”?))
*Saito ofrece trabajar por ellos y ayudarles a conseguir el imposible: plantar una idea
*heredara
*((I don’t understand “Dom acepta porque como paga” either. Depending on what you meant, the rest of the sentence could need serÃa and podrÃa instead of será and podrá.))
*de haber matado a su esposa
*Para realizar la misión
*no se despierten sino caen en limbo
*Allà combaten contra((?))
*era entrando para repulsar
*Saito está disparado
*para persuadir a Fischer
*que Fischer debe entrar para descubrir
*Ella quiere que Dom se mate para vivir con ella: quiere que el limbo sea la realidad. Esta idea fue plantado por Dom como descuido y nunca se puede perdonar por esta causa. Pero consigue un tipo de catarsis
*de volver con él
*se despierta
*es distraÃdo por sus niños
*antes de ver
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bookgirl_me
in December 12th, 2011 @ 12:20Thank you!
The presentation went well and I now have an A.
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Piggy
in December 12th, 2011 @ 13:53Hurrah!
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oxlin
in February 28th, 2012 @ 20:44GAPAs, should we have another of these? I would help people but I think everyone has forgotten about this thread. I know I had, but I was reminded.
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Adeliae
in April 19th, 2012 @ 19:34I would like to second this request, unless it happened and I missed it.
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Robert Coontz (Administrator)
in April 19th, 2012 @ 20:39It had not happened hitherto but has now.
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