Question

What is 78,000,000 in scientific notation?

Answer 1

Scientific notation is when you take all the places behind the first digit in a number and write as them as an exponent of 10, multiplied by the other nonzero digits as a decimal, if that makes sense.
Therefore, 78,000,000 would be written as
7.8x10^7 its just like book girl said

Answer 2

Scientific notation is when you take all the places behind the first digit in a number and write as them as an exponent of 10, multiplied by the other nonzero digits as a decimal, if that makes sense.
Therefore, 78,000,000 would be written as
7.8x10^7