Question

А1=10 а2=6 а16-? S30-?

Answer 1

Ответ:

d=6-10=-4;

A16=a1+d(n-1);

A30=10-4(30-1)=10-4*29=10-116=-106;

S30=(a1+a30)*n/2;

A16=10-4(16-1)=-50;

S30=2*10+(30-1)*(-4) :2*30=-1440.

Answer 2

It seems like you're presenting a sequence of numbers where A1 is 10, A2 is 6, and you're asking for the values of A16 and S30. However, the pattern or rule governing this sequence isn't clear from the information provided. Could you please provide more context or details about the pattern or rule so that I can help you find the values of A16 and S30?