Electricity can flow only when which of the following is present? Group of answer choices

A switch attaches to a battery.

The circuit has a light bulb

There is a complete path for it to follow.

The wire is made from an insulator.

Compare the following pair of numbers a and b in three ways. a. find the ratio of a to b. b. find the ratio of b to a. c. complete the sentence: a is percent of b. a=120 and b=340 a. the ratio of a to b is . b. the ratio of b to a is . c. a is nothing percent of b.

Pls the last one and it has to be like number 6

What ia the sum if the first 7 terms of the geometric series