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RideAnS [48]
2 years ago
12

a theater has 49 seats in the first row, 52 seats in the second row, 55 seats in the third row, and so on. how many seats are th

ere in row 20
Mathematics
1 answer:
Dominik [7]2 years ago
7 0

Answer:

106

Step-by-step explanation:

this question represents an arithmetic sequence problem where you can use this formula: a(n) = a(1) + d(n-1)  where 'n' is value you're solving for, a(1) is the initial value, and 'd' is the common difference

a(20) = 49 + 3(20-1)

= 49 + 3(19)

= 49 + 57

= 106

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