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Posts tagged with Albert Einstein

Did Einstein Really Flunk at Math?

May21

In this picture, taken in 1934, a rather nervous-looking Albert Einstein gives a lecture to the American Association for the Advancement of Science in Pittsburgh. But, rumour has it that he failed in his early math exams. Scientists announced in 2016 that they had detected gravitational waves from the merging of two black holes in […]

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Math Prof wakes early to view black hole image

April11

Astronomers have captured the first image of a black hole, proving the University of Canterbury’s distinguished Professor Roy Kerr’s 56-year-old theory correct. Kerr said he set his alarm for 1am to see this exciting event. “The event horizon telescope photo is just the beginning of a new phase in the understanding of our universe. “The […]

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Post Support

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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