(2.0*10^4)(3.0*10^3)

A. 6.0 * 10^7
B. 6.0 * 10^12 my answer
C. 6.0 * 10^5
D. 6.0 * 10^43

no ... the exponents add

You are not correct...yet!

THe 6 is correct, but remember that you have
10^4 x 10^3
that is
10x10x10x10 x 10 x 10 x 10
thus 10^7
So which answer would you now choose?

Oh! so, it's A?

Yes : )

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

In this case, we have (2.0 * 10^4)(3.0 * 10^3).

First, let's multiply the coefficients: 2.0 * 3.0 = 6.0.

Next, let's add the exponents: 10^4 * 10^3 = 10^(4+3) = 10^7.

So, the result becomes 6.0 * 10^7.

Therefore, the correct answer is option A. 6.0 * 10^7.