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aleksandr82 [10.1K]
3 years ago
14

-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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Keelah's clothing store bicycles for $50 and then sells them for $80 what is the percent of markup on the price of the coat
kondaur [170]

Answer:

62.5%

Step-by-step explanation:

We can write a proportion. We know that $50 is the original value and $80 is the marked up price. We don't know the marked up percentage. Let's call it x. We write equal ratios of \frac{x}{100} comparing percent and \frac{50}{80} comparing the 50 to the marked up price. We then set them equal.

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