Asked by John
b.Find the seventeenth term of an Arithmetic Progression, whose 9th and 15th term are 19 and 37 respectively.
Answers
Answered by
Damon
http://www.mathsisfun.com/algebra/sequences-sums-arithmetic.html
Xn = a + d (n-1)
19 = a + d(8)
37 = a + d(15)
------------subtract to eliminate a
solve for d
solve for a
X17 = a + d (16)
Xn = a + d (n-1)
19 = a + d(8)
37 = a + d(15)
------------subtract to eliminate a
solve for d
solve for a
X17 = a + d (16)
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