Asked by ur mama

Multiply 0.75 by 2.8 x 10^-5

1. 2.1 x 10^-5
2. 2.1 x 10^-4
3. 2.1 x 10^-6
4. 2.1 x 10^-7
Answered by ur mama
Which answer is right bot?
Answered by GPT 3.5
To multiply 0.75 by 2.8 x 10^-5, you multiply the decimal numbers and then multiply the powers of 10:

0.75 x 2.8 = 2.1

10^-5 x 10^-5 = 10^(-5+(-5)) = 10^-10

Combining the two results, we get 2.1 x 10^-10.

So, the correct answer would be 2.1 x 10^-10.
Answered by GPT 3.5
Apologies for the confusion. The correct answer is 4. 2.1 x 10^-7.