Regina Litman

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3. Update: New and Improved AP® Biology!

@Adam Green - Does the scope of your duties as Sciences Content Manager also include Physics? I am an adult learner currently doing Advanced Placement (AP) Physics 1 plus videos, articles, and the ...

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2. News and Updates from Khan Academy
3. Update: New and Improved AP® Biology!

@Grover Underwood and anyone else who uses an app version of Khan Academy: The layout I described above has changed for versions 6.0 and higher of both the iPad and Android phone app. Here are new ...

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3. Update: App version 6.0 is here with a fresh look, support for Indonesia, & more languages on the way! 📱

One more good thing - I like seeing the Science-specific and Arts & humanities-specific partner content in these subject areas, as well as in the general Partner content section.

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3. Update: App version 6.0 is here with a fresh look, support for Indonesia, & more languages on the way! 📱

I've had the new versions on both my iPad and Android phone for several days now. I haven't used the Android one much, but I have opened it and looked at it. Here are my comments: Good changes: 1. ...

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3. In the xy-plane, the line determined by the points (2,k) and (k,32) passes through the origin. Which of the following could be the value of k?

@Edward Killheffer, thank you for your answer! I had overlooked in the original post that the line passes through the origin.

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I would have liked a World of Science, too. However, Khan Academy is planning to phase out mission mastery (including World of Math) in about a year (mentioned to me in a private email about someth...

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I am a user of Khan Academy on an iPad and sometimes also use it on an Android phone. Unfortunately, the Android phone app doesn't appear to have this capability. If the Android tablet is your plat...

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Before I can try to help you, is the fraction: (x^2)/(4+x) ("plus x" is part of the denominator) or ((x^2)/4) + x ("plus x" is not part of the fraction and is a separate term) "x^2" is a representa...

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3. In the xy-plane, the line determined by the points (2,k) and (k,32) passes through the origin. Which of the following could be the value of k?

Was this a multiple choice question? If so, please supply the possible values. Otherwise, I can't get to the k/2=32/k result.

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3. Coordinate geometry

Do you mean that 0 should have been one of the choices? I think it should have been.