## Welcome to H3 Maths

Blog Support for Growing Mathematicians

## Posts tagged with Aliens

### Alien Signals need Math Wizz to Solve

November21

The Warkworth Radio Astronomical Observatory is located about 50 km north of Auckland, New Zealand. It is operated by the Institute for Radio Astronomy and Space Research, Auckland University of Technology. Here is a picture of it: Task 1: Which shape – the parabola (C) or circle (D) best fits the shape of the telescope? […]

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### Math Graphs prepared for Alien Arrival

November25

In the new film “Arrival,” alien visitors appear all around Earth and humankind scrambles to understand their purpose in visiting. Perhaps they have come to improve their math? Anyway, the movie’s creatorsÂ  approached Wolfram Research (creators of Mathematica, the online problem-solver Wolfram Alpha, etc.) to produce some charts for use in the movie. CEO Stephen […]

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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)?]