What is 0.2 as a whole number

Suppose a ball is dropped fromca height of 6ft. it bounces back up but time it bounces, it reaches only 7/10 of its pervious height. what is the total of each height that the ball reaches after 5 bounces

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.