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3. Kids substance abuse and ways to prevent it

Hi Petar, I think this might be a good idea for future content for KA, and have escalated your idea to the Support Community as a noteworthy idea. Thanks for your contribution! :)

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3. Pls recommend program for writing/evaulating mathematics, formulae, Greek etc

Hi Simon, I know I write a lot of math on my computer, and I know a lot of people that use LaTeX to do that. It provides a nice, clean way to display equations and whatnot. If you like, try install...

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3. Stocks/Bonds video question

In terms of when you're accounting for the added interest, you would record the interest as an Interest Expense on the Income Statement, rather than the Balance Sheet. However, if you had interest ...

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2. General Khan Academy Questions
3. What is the difference between Single variable calculus and AP calculus?

The AP Calculus AB course and the normal Calculus 1, 2, and Differential and Integral Calculus courses on Khan Academy cover essentially the same topics of single variable calculus. You can start w...

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2. Classroom Product Questions and Feedback
3. Please develop a program for schools to buy

I'm glad you're considering using Khan Academy to help instruct your students! In terms of using it for your classes, have you tried making classes within the site and assigning tasks to your added...

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3. SAT WRITING

The full correct sentence is:  Whether penguin chicks are guarded by their mother or father depends on the season.  Where the phrase making up the subject is: "Whether penguin chicks are guarded by...

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3. SAT Writing

That sentence looks fine; it is grammatically correct. 

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3. Math question- I need a help!

3+3(t-1)≥15  In this equation, the 3 in 3(t-1) would represent how much the distance between the two points is increased every trial, not how many points Hannah feels. It would answer the question,...

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2. Classroom Tips and Tricks
3. Would there be any worksheets for arithmetic?

If you are looking for practice exercises for arithmetic, they are available in the Khan Academy math sections, here: https://www.khanacademy.org/math/arithmetic-home If you would like printable wo...

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3. Physics

The formula is originally v = d/t  It shows how velocity is an object's displacement over the time it takes for it to move that far.  If you multiply both sides of the equation by t, you get this: ...