## Welcome to H3 Maths

Blog Support for Growing Mathematicians

## Posts tagged with free graphing software

March2

Here are two great (and FREE) graphing software packages. Every maths student should have access to one of these (depending on the OS they are using); 1. Microsoft Mathematics for Win 7. Download here. 2. Grapher for Mac – go to Applications–>Utilities–>Grapher;   Both programs allow 2D and 3D graphing, etc. Enjoy! PS: for iPad […]

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10 x 9 x 8 + (7 + 6) x 5 x 4 x (3 + 2) x 1 = 2020

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)?]