Question

What is 521,000,000 expressed in scientific notation? A. 5.21x 10^8 B. 5.21x10^9 C. 0.521x10^-9 D. 0.521x10^9

Answer 1

A.
`5.21*10^(8)`

Explanation:

Multiplying by
`10^(n)` moves the decimal point n places to the right.

Doing so 8 times for 5.21 gives 521,000,000.