Answer:
2/5
Step-by-step explanation:

Hence, simplest form of 34/85 is 2/5.
Answer:
6^20
Step-by-step explanation:
When two indices are in brackets, you just have to multiply them.
Answer:
There are 0.00003 km in 3 cm
(Only 4 zeros after the decimal place)
Step-by-step explanation:
Answer:
6
Step-by-step explanation:
(1/2)(9 + 3) = (1/2)(12) = 6