13. What does a correlation coefficient of r = - 0.97 generally imply about the graph of a data set?

Mathematics

1 answer:

d1i1m1o1n [39]3 years ago

6 0

I don't know but I think it is B) The slope is negative, and a linear model is a good fit for the data.

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A thread is being pulled off a spool at the rate of 40 cm per second. Find the radius of the spool

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Answer:

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Step-by-step explanation:

it makes 150 rev/sec

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so every second the spool goes through 2*pi*r*150 of distance

we know that the rate of pulling is 40cm/sec

so 2pi*r*150 = 40

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now multiply by 150rev/sec = 40 cm/sec

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If the radius is 18 cm and the angle at centre of circle is 120° then the

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