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Posts tagged with spheres

Spheres

April15

H3 were amazed by the glass sculpture garden they visited in Taupo, New Zealand. Located at Lava Glass, one of the world’s premier glass blowing factories, this garden is a delightful collection of glass flowers, glass spheres and glass sculptures. It made us think again about the significance of the sphere as a mathematical shape […]

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H3 Maths Explores Mathematics in Architecture – Pt I

January9

Happy New Year for 2014! Yes, it has been rather a big adventure for H3 Maths, covering about 6 countries in just a few weeks. Temperatures ranged from 0 to 30 degrees C. You might have thought that H3 was on vacation and you would be correct. However, Mathematics never sleeps and H3 was acutely […]

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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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