It takes Deanna seven hours to paint a fence. What fraction of the fence does she paint in one hour?
1 answer:
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An arithmetic sequence is an ordered list of numbers where the next number is found by adding on to the last number (ex: 2,5,8,11... is a sequence where 3 is added on to find the next number).
The equation for an arithmetic sequence is
d is the number you add (common difference) to find the next number
The first number in the sequence is 47 so
<span>d=-2 because the question gives you that
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The answer is A. -9.
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<span>The answer is C. 158</span>
For the second one, it gives you
You can use this to find d
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Now you can just solve using the equation normally.
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The answer is C. 158