3 years ago

-3+9-27+81-243+729. Using the sigma notation to write the given sum

Mathematics

1 answer:

IgorC [24]3 years ago

5 0

Answer:

546

Step-by-step explanation:

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${ \: \: \: \: \: \: \: \: \: \Rightarrow 20 + 60 + 80 = 160}$

$\: \: \: \: \: \: \: \: \: \sf \Rightarrow20+60+80=160$

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$\: \: \: \: \: \: \: { \sf \Rightarrow60+40+100=200}$

$\bf\green{\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\: Answer :}$

Iris al principio tenía 40 soles.

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2 years ago

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Step-by-step explanation:

85/15

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