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Kipish [7]
3 years ago
10

N − 10 + 9n − 3 4) −4x − 10x

Mathematics
1 answer:
zalisa [80]3 years ago
3 0

Answer:

9n−14x−44

Step-by-step explanation:

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The seats at a local baseball stadium are arranged so that each row has five more seats than the row below it. If there are four
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Thus the last row has 119 seats.

The total number of seats in 24 rows = 1476

Step-by-step explanation:

The number of seats in each row make an arithmetic series. We will use arithmetic equation to find the number of seats in last row:

An = a1+ (n-1)d

An = 4+(24-1)5  

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An = 4 + 115  

An = 119

Thus the last row has 119 seats.

Now to find the sum of seats we will apply the formula:

Sn = n(a1 + an)/2

Sn = 24(4+119)/2  

Sn = 24(123) /2  

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The total number of seats in 24 rows = 1476....

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