## Welcome to H3 Maths

Blog Support for Growing Mathematicians

## Posts tagged with soccer

### The Mathematics of The World Cup

June19

Every four years, The World Cup (the second biggest sporting event) forces fans to remember their mathematics lessons. In fact, working out what each team needs from its final match to finish in the top two of a group and advance to the knockout rounds takes some algebra knowledge and powers of prediction. After Brazil […]

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### German Soccer shootouts are mathematically better

May9

In an interesting article by DW on soccer and math, an analysis was done of penalty shootouts in the European Soccer league. Research showed that most shooters have a 75 percent chance of scoring. But according to binomial probability, and common preconceptions, the Germans do much better. For a world class soccer player, scoring a […]

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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)?]