Answer:
Its either answer B. or D. Sorry if I'm wrong and I hope this sorta helps.
Answer:
Algebra is math, like X, Y and all that.
Step-by-step explanation:
Scientific notation is als<span>o </span>called power-of-10 notation, is a method of writing extremely large and small numbers.
when a number written in scientific notation includes a positive exponent, the magnitude of the number is <span>greater than one</span>
Answer:81030m
Step-by-step explanation:1km=1000m, 81km=81000+30=81030m