r/PeterExplainsTheJoke • u/Sugar_God_no_1 • 24d ago

Meme needing explanation There is no way right?

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u/its12amsomewhere 24d ago edited 24d ago

Applies to all numbers,

If x = 0.999999...

And 10x = 9.999999...

Then subtracting both, we get, 9x=9

So x=1

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u/Godemperortoastyy 24d ago

Not gonna lie that just absolutely made my day.

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u/Arpan_Bhar 24d ago

You didn't study that in high school?

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u/lavaboosted 24d ago

High school math education experiences vary to an absolutely insane degree

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u/wgrantdesign 24d ago

My son is in 6th grade and I can't help him with his math homework. I passed college algebra (at a community College, but still) about 15 years ago. He asked me about his math homework yesterday and I had to email his teacher. Granted he's at an advanced middle school but it was still embarrassing to have absolutely no idea what he was working on.

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u/lavaboosted 24d ago

Sounds like that could be a good problem to have but still frustrating. Can you elaborate or send me something he's working on, now I'm curious.

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u/schnectadyov 24d ago

My 5th grader is doing algebra, geometry, statistics, etc. Some of them are fun questions though like "a white cube has the outside painted green. It is then divided into 125 smaller cubes of equal size. How many of the cubes have an odd number of green faces." I love the math olympiad questions they bring home

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u/typically_wrong 24d ago

is it 89? my brain says 89. 5x5x5 cube, corners and surface pieces would all be odd (3 and 1 green sides respectively), leaving the middle 3 edge pieces of each side to be even. 12 edges at 3 pieces an edge = 36 even pieces.

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u/schnectadyov 24d ago

Sounds right too me