Calculate the 8th term of the arithmetic progression if it is known that a1 = -2.4 and d = 1.6.
| August 3, 2021 | education
We are given an arithmetic progression (an) by its first term a1 = -2.4 and the difference of the arithmetic progression d = 1.6.
In order to calculate the 8th term of an arithmetic progression, let us first of all recall the formula for finding the nth term of an arithmetic progression.
an = a1 + d (n – 1);
The N -th term of the arithmetic progression is equal to the sum of its first term plus the product of the difference of the arithmetic progression by (n – 1).
a8 = a1 + d (8 – 1) = -2.4 + 1.6 * 7 = -2.4 + 11.2 = 8.8.
Answer: the eighth term of the progression is 8.8.
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