Regina Litman

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3. High School Geometry

Unconditionally, this is a translation because you don’t need a particular line through which to reflect it or a particular point to serve as a center of rotation. All you need is to move it 11 uni...

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3. Algebra I (Completing the Square)

Perhaps different teachers teach quadratic equations different ways, but the way I learned it, and the way I think Khan Academy teaches it is if there is a function indicator such as g(x) or a diff...

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3. Algebra I (Completing the Square)

I think the problem with your answer is that you didn’t put it in a g(x) = [something] format. First, was the answer area presented to you with “g(x) = “ in front of it? If this was the case, the f...

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2. News and Updates from Khan Academy
3. Update: Mastery Mechanics Changes September 2018

Jett, I posted a fairly detailed response to the new topic you started (linked to by "here" in your message).

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3. About probability and statistics on Khan academy.

I didn’t need much calculus when I did Probability and statistics. I do remember an advanced concept or two where it was useful to know calculus to understand a concept, but I don’t recall which on...

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2. Mobile Platform Questions and Feedback
3. Please make the streak highly accessible and visible in the Android app

I don't know if the consecutive days streak was ever part of the Android app, but it was part of the iPad app until last spring. I have concentrated in reporting operational problems under Report a...

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3. Polynomials

First, have you looked on Khan Academy for videos/articles on this subject? You may find it in Algebra I -> Polynomials or another topic on Khan Academy. I will give you a push in the right directi...

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3. I need help with solving for b in slope intercept from two points

The reason that sometimes you see the first pair and sometimes you see the second pair is because it usually doesn’t matter which pair you use. Use either ordered pair along with the slope to build...

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3. Need help with a (simple) math calculation

First of all, is the cost of each box $14.90 (fourteen dollars and ninety cents) or $1.49 (one dollar and forty-nine cents)? I see that you are dividing 50 by the smaller number, but when you state...

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3. Confused About Flipping the > < Signs

Possibly, the expected answer has the t by itself on the left side of the inequality: t < 47/33 In the future/in future, try putting the variable in an equation or inequality by itself on the left ...