Answer:
39364.
Step-by-step explanation:
I guess its an = 4*(3)^(n-1)
r = 3, a1 = 4 and n = 9
Sum of n terms = a1 * (r^n - 1) / (r - 1)
so S9 = 4 *(3^9 - 1) / (3 - 1)
= 4 * (19683 - 1) / 2
= 78728/2
= 39364.
B, 6x -9. the rest either contain two many terms or use a different operation. hope this helps x
Answer:
Step-by-step explanation:
Solved by elim: it is similar (diff size, but not congruent, same size) and B is twice the size of A, not half.
