Answer:
D
Step-by-step explanation:
there are 9 digits.
and round it off to the nearest hundred million which is 3.
There are 8 digits before the 3... so 10 gets to the power of 8.___ 10⁸
3,0×10⁸ m.s^-1
Answer: The answer is B
Step-by-step explanation:
Answer:
10
-55xy-30
Step-by-step explanation:
Round 5.2 down to 5 and Round 6.7 to 7.
5+7=12