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# Math Past Paper watch

1. http://www.thomas-reddington.com/upl..._june_2010.pdf

6f)
2. regression line = 15 + 2.03d
3. this is as far as i got

d > 15/(5-2.03)
d > 5.050505050505050505....

Where is the range????
4. i got a slightly different equation:

f = 14.6 + 2.16d

the other equation is

f = 5d

so 14.6 + 2.16d > 5d

d > 14.6/2.84

the distance would then be anything greater than 100*14.6/2.84 km is cheaper with the first operator

the bear
5. Haha! My god have AS levels become easier.
6. the bear
your regression line is definitley wrong - my answer is from the mark scheme I just did not get the answer to the next bit!
sorry
7. i noticed that it was different from yours.... i used an online calculator & typed in the numbers in the question...

anyway the method is correct once you have the line sorted out

the bear

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