3 years ago

a stadium with 80 rows has 20 seats in the first rows,30 in the second,and so on.how many total seats are in the stadium

1 answer:

joja [24]3 years ago

5 0

Answer: there are 2,000 seats in total

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66.138679

Step-by-step explanation:

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ollegr [7]

Use orders of operations.
$40 - {2}^{2} \times 9 + 17 \\ 40 - 4 \times 9 + 17 \\ 40 - 36 + 17 \\ 4 + 17 \\ = 21$

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3 years ago

a stadium with 80 rows has 20 seats in the first rows,30 in the second,and so on.how many total seats are in the stadium​