# AS sequence

In an arithmetic sequence is given the difference d = -3 and a71 = 455.

a) Determine the value of a62
b) Determine the sum of 71 members.

a62 =  482
s71 =  39760

### Step-by-step explanation:

${s}_{71}=71\cdot \frac{{a}_{1}+{a}_{71}}{2}=71\cdot \frac{665+455}{2}=39760$ Did you find an error or inaccuracy? Feel free to write us. Thank you! ## Related math problems and questions:

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