Answer:
C
Step-by-step explanation:
a p e x
Answer:
A: the same line
Step-by-step explanation:
Answer:
<h2>4 bilion = 4 × 10⁹</h2>
Step-by-step explanation:
The scientific notation:

where

4 billion:
in USA: 4,000,000,000
in Europe: 4 000 000 000 000

Answer:
d
Step-by-step explanation:
43.55 rounds the tenth up because it has a hundredth of five