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3 years ago

9

tiffany answered 90 percent of the questions on the math test correctly. there were 50 questions in total. how many questions di

d tiffany answer correctly. show work.

1 answer:

Andreas93 [3]3 years ago

3 0

Hi!

Use the percentage formula to solve:

90 * 50 / 100 = 45

Tiffany answered 45 questions correctly.

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Find the sum of the arithmetic series given ai = 45, an = 85, and n = 5.

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