Answer :
To solve this problem, we need to calculate [tex]\(8.4 \times 10^2\)[/tex].
Let's break it down:
1. Understand what [tex]\(10^2\)[/tex] means:
- The expression [tex]\(10^2\)[/tex] represents 10 raised to the power of 2, which means multiplying 10 by itself once.
- So, [tex]\(10^2 = 10 \times 10 = 100\)[/tex].
2. Multiply [tex]\(8.4\)[/tex] by [tex]\(100\)[/tex]:
- When you multiply a number by 100, you essentially move the decimal point two places to the right.
- Starting with 8.4, if you move the decimal two places right, it becomes 840.
So, [tex]\(8.4 \times 10^2 = 840\)[/tex].
Therefore, the correct answer to the question is:
D. 840
Let's break it down:
1. Understand what [tex]\(10^2\)[/tex] means:
- The expression [tex]\(10^2\)[/tex] represents 10 raised to the power of 2, which means multiplying 10 by itself once.
- So, [tex]\(10^2 = 10 \times 10 = 100\)[/tex].
2. Multiply [tex]\(8.4\)[/tex] by [tex]\(100\)[/tex]:
- When you multiply a number by 100, you essentially move the decimal point two places to the right.
- Starting with 8.4, if you move the decimal two places right, it becomes 840.
So, [tex]\(8.4 \times 10^2 = 840\)[/tex].
Therefore, the correct answer to the question is:
D. 840
