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Arada [10]
4 years ago
14

Sally did some counting look at her work explain why you think sally counted this way 177,178,179,180,190,200,220,211,212,213,21

4
Mathematics
1 answer:
dimulka [17.4K]4 years ago
8 0
<span>The first and last four numbers each have a difference of one between them. The fifth number has a difference of 10 between it and the previous number. The middle number has a difference of 20 between itself and the two numbers that surround it. Counting in this way could have been a result of a lot of things to count, and spot checking along the way (when the numbers have a difference of 1).</span>
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We are given the expression \displaystyle \large{x^2-9}:—

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If you have any questions regarding the problem or need clarification of my answer/explanation, do not hesitate to ask in comment!

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