Im not sure this is is right this is scientific notation (4.18x10^-4)(9x^-4) 4.18 x 9. 10^-4x10^-4 well we add the exponents =37.62 which gives us 10^8 37.62 is not in scientific notion so we moves the decimal to the left which gives us 3.762 we add 1 to the. the exponent which gives us 10^9 3.762 x10^9 is this right

(4.18 × 9) = 37.62
10^-4 × 10^-4 = 10^-8
Then since you need to move the decimal over to make it in scientific notation, you add 1 to the 10^-8 , then you get 10^-7. The problem in scientific notation is 3.726×10^-7.

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.