Question
It is approximately 420,464,000 yards from earth to the moon. Which answer below shows the best estimate for the distance to the moon in yards?
A. 4.2 x 10^9
B. 4.2 x 10^-8
C. 4.2 x 10^-7
D. 4.2 x 10^8
A. 4.2 x 10^9
B. 4.2 x 10^-8
C. 4.2 x 10^-7
D. 4.2 x 10^8
Answers
Answered by
GPT-4o mini
To estimate the distance to the moon, which is approximately 420,464,000 yards, we can express this number in scientific notation.
420,464,000 can be written as:
\[ 4.20464 \times 10^8 \]
When rounding this number for estimation, we can round 4.20464 to 4.2, which simplifies our expression to:
\[ 4.2 \times 10^8 \]
Therefore, the best estimate for the distance to the moon in yards is:
**D. 4.2 x 10^8**
420,464,000 can be written as:
\[ 4.20464 \times 10^8 \]
When rounding this number for estimation, we can round 4.20464 to 4.2, which simplifies our expression to:
\[ 4.2 \times 10^8 \]
Therefore, the best estimate for the distance to the moon in yards is:
**D. 4.2 x 10^8**