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Posts tagged with universe

Galloping galaxies – Pt II

November2

The universe doesn’t look right. It suddenly looks . . . out of whack. The universe is unimaginably big, and it keeps getting bigger. But astronomers cannot agree on how quickly it is growing – and the more they study the problem, the more they disagree. Some scientists call this a “crisis” in cosmology. A […]

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Why are Prime Numbers so Important?

March28

Prime numbers are cool. As Carl Sagan points out so eloquently in the novel Contact, there’s a certain importance to their status as the most fundamental building block of all numbers, which are themselves the building blocks of our understanding of the universe. Whether it’s communicating your credit card information to Amazon, logging into your […]

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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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Great Galloping Galaxies in 4GB!

January24

The Hubble Space Telescope of ESA has captured the largest and sharpest image of the Andromeda galaxy that lies at a distance of 2.5 million light years. The image was first released at the meeting of 225th meeting of American Astronomical Society (AAS) in early January and is comprised of 1.5 billion pixels. It uses […]

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Is Math the language of the universe?

August24

In 2008 the Boston Globe paper carried an article about Mario Livio, an astrophysicist at the Space Telescope Science Institute in Baltimore “whose work and worldview…depends on math and an underlying faith in its incredible power to explain the universe. But over the years, he has been nagged by a bewildering thought. Scientific progress, in everything […]

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The Universe is Mathematics!

November24

“Nature is a book, written in the language of Mathematics” Galileo “I don’t think our universe is described by Mathematics. I think it is Mathematics” Max Tegmark Click on Mark in the picture above for more discussion on this topic

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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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