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How we construct bar graphs in New Zealand

March28
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Our Universe is Math?

August15

Physicist and Cosmologist Max Tegmark discusses the concept that everything, from sheep to our universe, is mathematical. You can check out Tegmark’s personal page, complete with his 8 universes, mouse cam and poetry, (as well as some helpful notes for students interested in Science) here.

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NCEA Level 2 Algebra Problem. Using the information given, the shaded area = 9, that is:
y(y-8) = 9 –> y.y – 8y – 9 =0
–> (y-9)(y+1) = 0, therefore y = 9 (can’t have a distance of – 1 for the other solution for y)
Using the top and bottom of the rectangle,
x = (y-8)(y+2) = (9-8)(9+2) = 11
but, the left side = (x-4) = 11-4 = 7, but rhs = y+? = 9+?, which is greater than the value of the opp. side??
[I think that the left had side was a mistake and should have read (x+4)?]

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