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# Oscar Sheen

• Oscar Sheen commented,

Solved. How? Well ... With h. One has to first factor the 8p + 2pq (denominator). Then one can eliminate common terms. That's how one is left with 4 + q (after factoring). If I forget to factor fir...

• Oscar Sheen created a post,

### Help > Math > Algebra 1 > "3 questions I can't solve."

Please show your working because I can't figure out if it's me or the answers wrong? Thx

• Oscar Sheen created a post,

### "Comparing linear rates word problems": a Test Quiz question from the Algebra 1 module

I don't get how Khan went from: 15cm -5cm/6hours * t = 25cm - 15cm/6hours * t to ... 10cm/6h * t = 10cm It's the 10cm side of the equation that has stumped me for over an hour. For me, there's a st...

• Oscar Sheen created a post,

Both of the following expression are equivalent to 16x^2 yet Khan marks one right and the other wrong. That's probably because I am wrong and can't see where I am wrong. Please write me how I'm wro...

• Oscar Sheen commented,

Hi Evan, Concerning the subject matter found at Algebra 1 > Working With Units FYI this Youtube video did explain Unit Conversion adequality: (11) Unit Conversion the Easy Way (Dimensional Analysis...

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### Rate Conversion & Dimensional Analysis

Concerning Algebra 1 : Rate Conversions. Also known as Dimensional Analysis.I think the hints, and how they are written, need to be revised and improved. Maybe an extra video. But definitely the hi...

• Oscar Sheen commented,

Thanks Pablo.

• Oscar Sheen commented,

I don't know for sure. Post 8 grade courses, they appear to be laid out in at least a degree of logical order because calculus is last because it's harder than algebra 1 and 2 and statistics, for i...

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### Statistics & Probability

I'm soon to finish Year 8 math. Having attained 1.5 million points from Grade 1 to 8 thus far. Upon completing Grade 8, next up is Algebra 1. Past that is Statistics and Probabilty. When I finish g...

• Oscar Sheen commented,

I've some 1.5million points on Khan in Math alone. I would go back a year or two and do the Unit Tests. The final tests at the end of every unit. There might be, say, 8 - 12 of them in total. Follo...

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