20% of 200 is 40, so H is the correct answers the proportion can be written as 40:200
2.1 x 10^10/ 7 x 10^17
= 3 x 10^-8
hope this helps and have a great day :)
-4.5 might be the answer im not very sure but yeah
Answer:
30
Step-by-step explanation:
First, solve inside the parentheses, then keep going from there.

X=3 (the line is on the x-axis, positive because it’s on the positive quadrant)