Oscar Sheen

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

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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...

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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...

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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...

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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...

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I've some 1.4m khan points gained in math. I'm currently up to Year 8 systems of equations. I would like there to be more stepped learning with systems of equations word problems. I think that it's...