What is the correct answer to the following expression? 2)96 × 10^-10 + 1.01 × 10^-12 A)2.9701 × 10^-10 B)2.970 × 10^-10 C)3 × 10^-10 D)3.0 × 10^-10 E)2.97 × 10^-10

Question

Quizplus · Accepted Answer

To add/subtract numbers in scientific notation, we need to have the same power of 10. Here, the powers of 10 for the first and third terms are the same, but the second term has a different power of 10. To make the powers of 10 the same, we need to move the decimal point of the second term two places to the right, which gives us: 2.96 × 10^-10. Now we can add/subtract the terms: 2.96 × 10^-10 + 1.01 × 10^-12 = 2.97 × 10^-10. Therefore, the best choice is E.

What Is the Correct Answer to the Following Expression