The explicit formula for calculating the sum is

The sum of the nth term of a sequence is expressed as;

a is the first term
d is the common difference
n is the number of terms
For the sequence 0 + 1 + 2 + 3 +...

Similarly for the sequence:
1 + 2+ 3 + 4+...

Taking the product of the sum to get the explicit formula for calculating the sum

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Answer:
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Step-by-step explanation:
c = πd
75 = 3.14d
Divide both sides by 3.14
23.89 = d
Rounded
24 inches
Answer:
24
Step-by-step explanation:
N = 5P + 4
N - 4 = 5P
(N - 4) / 5 = P or (N/5) - 4/5 = P