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Sliva [168]
2 years ago
15

In the arithmetic sequence {13, 6,-1,-8,...}, what is the common difference?

Mathematics
1 answer:
guapka [62]2 years ago
6 0
<h3>Answer:  -7</h3>

Explanation:

Pick any term. Subtract off the previous one to find the common difference.

  • term2 - term1 = 6-13 = -7
  • term3 - term2 = -1-6 = -7
  • term4 - term3 = -8-(-1) = -8+1 = -7

And so on. You only need to pick one of those to show as your steps to your teacher. However, doing all three subtractions is a good way to get practice in seeing how we have an arithmetic sequence. The common difference must be the same each time.

We subtract 7 from each term to get the next term, i.e. we add -7 to each term to get the next one.

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An agricultural scientist wanted to compare the effect of a new fertilizer to that of three older fertilizers—X, Y, and Z—on the
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The scientist’s conclusion is not appropriate because it is based on a subjective appreciation (“significantly greater than”).

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A more objective and technical approach would be fixing a level of significance, let's say 0.05 or 0.01 for example, measuring the samples means and standard deviations and then proceeding with an appropriate hypothesis testing in order to see if the differences in means are really significant.

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1. The volume of the pile is 4,399.7719 m^3

2. The number of sanders to be filled from a pile is 638

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