20leunge

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3. Could someone help me with my math homework?

This is a long post, so I've italicized questions and bolded answers. Let me know if there are any mistakes. The first thing to realize is that we are dealing with finite arithmetic series, that is...

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3. PLEASE HELP?! (Math Word Problem)

Here's how I see it. Let x represent the time Rob intended to spend on the project. However, he spent 100% of that times AND 25% more, so 125% of the planned time. So the time Rob actually spent wa...

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3. absolute value question

RowanH: In general, |x|+|y| ≠ |x+y|. Consider x = 1, y = -1. |x|+|y| = 2 |x+y| = 0.  So. |x|+|y| ≠ |x+y| because 2 ≠ 0. zineb.aj: I'm not sure why you wouldn't want to remove the absolute value sym...

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3. How to solve x^2>a^2

First, solve x^2=a^2. Take the plus and minus square root of both sides. The negative root is needed because when that is squared on both sides, you still get back the original equation. ==> x=a, x...

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3. help, maths (this is not simple)

All four solutions: x=2, x=3, x=((-1+sqrt(17))/2), x=((-1-sqrt(17))/2). You have to solve for 3x-5=((x-1)^2) and 3x-5= - ((x-1)^2) because of the absolute value sign on the 3x-5. Plugging in the so...

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3. Problems with Vectorial Field derivatives on a demonstration

Just looking at the partial derivative with respect to x, I believe the chain rule is being applied to Q, and then to R along with the product rule. The chain rule is being used because z is itself...

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3. Algebra 2 Binomial theorem

What I did was I skipped this part and continued learning until I finished the combinatorics section from Precalculus. Then, I went back and learned it. It's not exactly a recurring topic throughou...

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3. Chemistry Question

If you know the mass of water lost, you can calculate using stoichiometry the moles of water. Oxygen has a molar mass of 16.00 grams per mole (g/mol) and hydrogen has a molar mass of 1.01 g/mol. In...

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3. Química: electrones del Amoniaco? / Chemistry: Ammonia electrons?

Nitrogen has 5 valence electrons, so NH3 will have 8 valence electrons total.

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3. Content Update: September 2018 (Music, History, Physics, and more!)

Can the new content for physics for India be found in the general physics subject as well?