In an arithmetic sequence, consecutive terms differ by a common difference. The formula for determining the nth term of an arithmetic sequence is expressed as
an = a1 + (n - 1)d
Where
a1 represents the first term of the sequence.
d represents the common difference.
n represents the number of terms in the sequence.
From the information given,
a = 11
d = 19 - 11 = 8
n = 92
We want to determine the value of the 92nd term, a92. Therefore,
In order to find this, you have to first find the equation of the sequence. In order to find that equation, first make two ordered pairs using x as what number it is in the sequence and y as the value. Therefore you have the following ordered pairs: (1, -29) and (2, -22). Given that, we can find the slope by using the slope formula below.
m (slope) = (y2 - y1)/(x2 - x1)
m = (-22 - -29)/(2 - 1)
m = 7/1
m = 7
Now that we have a slope of 7, we can find the intercept using slope intercept form and a point. We'll use (1, -29) as the point.
y = mx + b
-29 = 1(7) + b
-29 = 7 + b
-36 = b
Now that we have the slope and intercept, we can write the equation.
The 92nd term of the arithmetic sequence is 731 because the common difference between them is 8 and then I added 8 with every single number that I got and I continued adding until I get my 92nd term which is 731.