Answer:

Step-by-step explanation:
Given

Required
Solve:

Simplify 6/10

Express 9 as 3^2

Apply law of indices


Express as a sing;e fraction

Apply law of indices:




Answer:
D BOTTOM RIGHT
Step-by-step explanation:
Answer:
50 Years
Step-by-step explanation:
175.5 million (The difference) divided by 3.51 million equals 50.