Which expression is equivalent to (12 x 10^4)( 6 x 10^5) ?

Answer 1

To multiply numbers in scientific notation, you can multiply the coefficients and add the exponents.

So, (12 x 10^4)(6 x 10^5) would be equal to (12 x 6) x (10^4 x 10^5).

Multiplying the coefficients gives you 72.

Adding the exponents gives you 10^4+5=10^9.

Therefore, (12 x 10^4)(6 x 10^5) is equivalent to 72 x 10^9.