Question

Simplify the expression. Write the answer using scientific notation. (9 x 10^5) (3 x10^10)

Answer 1

(x^10)(x^2) Add the exponents 10+2=12 So... (x^12)

Explanation:

Answer 2

Should be 2.7 x 10^16

Explanation:

(9 x 10^5) (3 x10^10)

Multiply 9 by 3

9 x 3 = 27

Add the exponents

10^5 + 10^10

Results in

27 x 10^15

However that isn't an answer choice. But 2.7 x 10^16 is the same as 27 x 10^15