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OpenStudy (anonymous):
Write the sum using summation notation, assuming the suggested pattern continues. 9 - 18 + 36 - 72 + ...
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OpenStudy (anonymous):
these are the answers
geerky42 (geerky42):
We can easily see that it's either B or D because sign changes. so for first term (n=0) is 9. which do you think is answer?
OpenStudy (anonymous):
D, right?
OpenStudy (anonymous):
@geerky42
geerky42 (geerky42):
yep
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OpenStudy (anonymous):
thank you <3
geerky42 (geerky42):
welcome
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