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A space bus was heading your way!

April2

Launched in 2011, Tiangong 1 was China’s first space station, serving as an experimental platform for bigger projects. The European Space Agency forecast that the bus-sized station, whose name translates as “Heavenly Palace,” would re-enter sometime this morning NZT. The Chinese space agency said it should happen during the course of today Beijing time. Based […]

by James posted under Uncategorized | tagged under chance, how big is a trillion?, probability, space station, trillion | Comments Off

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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)?]