Galaxy027❤

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3. I'm trying to learn formulas to do word problems

Hello Julisse Porras-Gerhardt!  usually solving word problem requires tranlating the word into an equation, that is the first thing you have to know, it does not require formulas unless stated othe...

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3. the concept of Tangent line

 Hello mohammadrezaaalaei!  According to my understanding and what i have leant so far: A tangent line is a straight line that just barely touches a curve at one point. It is that the tangent line ...

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3. Update: New Help Center design!

wow!!! this is better, but looks a bit complicated. I prefer this than the last design👍✔!

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3. Highschool Chemistry

Hello BlueFlame! If you seek to study the Highschool Chemistry here on Khan Academy as a 7th grader, I'd recommend that you begin with the Chemistry Library.  The Chemistry Library basically contai...

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3. Differential equations

Hello Aditya singh! Yes, it is possible to learn pre-calculus in three months, but that depends on your time and dedication to the course.  And for the differential equations, I'd recommend you stu...

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3. How long will it take to finish the following sections for calculus:

Hello ziggs.morgana,  It depends on your time and dedication to the calculus course. So basically, if you're truly dedicated, it takes about 3-4 months to complete the entire calculus. You can expl...

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3. Chemistry question about electron affinity

Hello Dennis Chamberlin!  Na- and K- do not exist, this is due to metals being very reactive elements, so it bonds with other non-metals to complete their octet state. If the value of the electron ...

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3. Statistics & Probability

Hello Oscar Sheen and pa_u_los! I agree with Pablo as what he previously stated, well as I can say Oscar, you can go straight into Statistics and Probability after your Grade 8, but unfortunately t...

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3. what courses to study for the G.E.D. test?

Hello Serena Woods!  Probably most of the things from test prep; Maybe Maths, HS Biology, writting essays, Passages & Probability, e.t.c... This could help; Or if you need more information click th...

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3. We’re homeschooling — should we register as a parent or as a teacher?

Hello Ramon Felciano!  Since your child is homeschooling, According to my opinion; you can use Khan Academy as a teacher, and then have your child go to the coaches tab, click on add parent down be...