Write the following numbers used in these statements in scientific notation. (note: some of these numbers have been rounded.)
the speed of light is 186,000 miles per second.

185,000 would be 1.86 x 10^5 in scientific notation

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.