I guess the first term should be -1 and not 1, then:
The common difference of {-1, 4, 9, 14, 19, ...} is 5.
Thus the nth term is given by 5n - 6
→ 17th term is 5×17 - 6 = 79.
The 90th term of the arithmetic sequence is 461
It is a + 8d where a is the first term and d is the common difference.
The mean
The constant increment.
10,341
The 90th term of the arithmetic sequence is 461
The nth term of an arithmetic sequence = a + [(n - 1) X d]
It is a + 8d where a is the first term and d is the common difference.
What is the 14th term in the arithmetic sequence in which the first is 100 and the common difference is -4? a14= a + 13d = 100 + 13(-4) = 48
The mean
The constant increment.
10,341
It is: 0.37*term+0.5
It is an arithmetic sequence if you can establish that the difference between any term in the sequence and the one before it has a constant value.
Arithmetic- the number increases by 10 every term.
It is an Arithmetic Progression with a constant difference of 11 and first term 15.
Arithmetic : (First term)(last term)(act of terms)/2 Geometric : (first term)(total terms)+common ratio to the power of (1+2+...+(total terms-1))