How do you evaluate #(6.6times10^5)/(2times10^-3)#?

1 Answer
Jun 28, 2017

Answer:

See a solution process below:

Explanation:

First, rewrite the expression as:

#(6.6/2) xx (10^5/10^-3) = 3.3 xx (10^5/10^-3)#

Now, using this rule for exponents we can complete the evaluation:

#x^color(red)(a)/x^color(blue)(b) = x^(color(red)(a)-color(blue)(b))#

#3.3 xx (x^color(red)(5)/x^color(blue)(-3)) = 3.3 xx x^(color(red)(5)-color(blue)(-3)) = 3.3 xx x^(color(red)(5)+color(blue)(3)) =#

#3.3 xx 10^8#

Or, in standard terms, we can move the decimal place 8 places to the right because the exponent for the 10s term is positive:

#3.3 xx 10^8 = 330,000,000#