exam
Maths Puzzle
Numerical Ability
simplify
10-a/b/30b
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Hi can I have some help finding an equation of the line through (9, 6) and perpendicular to the line passing through (10, 4) and (-9, 0)?
In 1920, the record for a certain race was 45.4 sec In 1970, it was 44.9 sec. Let R(t)=the record in the reace and t=the number of years since 1920.
a) Find a linear function t