Question

Consider the arithmetic sequence 3,7,11
a)find the algebraic form of sum of sequence
b)how many terms of this sequence must add to get the sum 210

Answer 1

Step-by-step explanation:

Consider the arithmetic sequence 3,7,11

a)find the algebraic form of sum of sequence

b)how many terms of this sequence must add to get the sum 210

Answer 2

Answer:

a) $\frac{n}{2}[4n+2]$

b)10 terms

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