What is the common difference for this arithmetic sequence? 45, 40, 35, 30, 25, ...
2 answers:
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Answer:
See the three attached images.
Step-by-step explanation:
image1 shows the intersection of b and c: . (green "football")
image2 shows the <u>complement</u> of a (outside a): (yellow)
image3 shows the intersection of those sets: (green "football with a bite out of it") :-)
