Answer: a sperm and an egg
Step-by-step explanation:
Answer:
3.74165738677
Step-by-step explanation:
This algebra lesson explains geometric series<span>. ... To </span>find<span> the sum of the first n terms of a geometric sequence: Sn = the summation of ... 5 , -</span>10<span> , </span>20<span> , -</span>40<span> , 80 , .</span>