You would do an arithmetic sequence
use A1 +(n-1)d to calculate number of seats in the last row
An = 4+(24-1)5
An = 4 + (23)(5)
An = 4 + 115
An = 119 seats in the last row
now use a sum sequence to find total number of seats
Sn = n(a1 + an)/2
Sn = 24(4+119)/2
Sn = 24(123) /2
Sn = 1476 total seats
Answer:
A
Step-by-step explanation:
Answer:
the ratio is 1:50 i don't see anymore ratio underneath
Step-by-step explanation:
Answer:
Step-by-step explanation:
12.8/2 = 96 / 2 = 48
the answer is the first one
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