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aniked [119]
3 years ago
11

the Millers, Rigbys, and the Smiths went on a camping trip. The Millers spent $100 more then Rigbys, and the Smiths spent twice

as much as the Millers. if the cost of the trip was $580 altogether, how much did the Smiths spend?​
Mathematics
1 answer:
KATRIN_1 [288]3 years ago
8 0

Let  \: x \:  be \:  the  \: money  \: the \:  Millers \:  spent \\ The  \: Rigbys  \: spent:x-100 \\ The  \: Smiths \:  spent:2x \\ We  \: have  \: an \:  equation:x + x - 100 + 2x = 580 \\  <  =  > 4x = 680 \\   <  =  > x = 170 =  > 2x = 340 \\ So \:  the \:  Smiths  \: spent \: \$340

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(c) Use a calculator to verify that Σ(x) = 64, Σ(x2) = 1118, Σ(y) = 628, Σ(y2) = 87,982, and Σ(x y) = 9,627.
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The correlation based on the computation is 0.97.

<h3>How to compute the value?</h3>

It should be noted that the question is that we should simply calculate the correlation which is r.

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