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Numbers for Exploration and Curiosity

January31

Yes, numbers! Mathematics is a language, just like English, Chinese and Spanish – but, it is the language of numbers! I came across this interesting set of numbers released by NASA for their latest mobile space lab which is set to touch down on Mars next August. Click on the Mars Curiosity Rover to learn some of the numbers related to this mission. Caution – some of these numbers are not metric!

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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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