Find the formula for the nth term of the arithmetic sequence.  Use the formula to find the 20th term in the arithmetic sequence.

Q: Tell if each sequence is arithmetic, geometric or neither. Explain your choice. Determine the next 3…

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Q: Determine the number of terms in the arithmetic sequence below. -70, -69, -68, ..., 67, 68, 69, 70

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Q: a₁ = 3,r=2,n=8

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Q: Find the next number in this sequence. 40, -20, 10, -5, ______. im stupid i dont know how i got to…

A: Here ratio is -2 ,when you divided -2 in first terms you get the next terms  Dear student don't…

Q: Use the method of successive differences to determine the next number in the given sequence. 3, 5,…

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Q: Find the number of terms in the finite arithmetic sequence. 2, 6, 10, 94

A: Given sequence is    The sequence is arithmetic sequence with first term a=2 and common difference…

Q: Find the sum of the positive terms of the arithmetic sequence 85, 78, 71, .

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Q: Write an expression that gives the requested sum. The sum of the first 32 terms of the geometric…

A: The given geometric sequence is: 1,2,4,... There are total 32 terms.

Q: Write the arithmetic sequence 37, 29, 21, 13, .. in the standard form:

A: Arithmetic series: An=A0+(n-1)d

Q: Find the next three terms of the sequence. 2, 5, 10, 17, 26,

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Q: Find the 78th term of the following arithmetic sequence.  12, 20, 28, 36

A: To find the 78th term of following AP 12, 20, 28, 36