Write in Scientific Notation Quick Check
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Question
Suppose an average person blinks 15 times per hour. How many times does an average person blink in a year? Write the answer in scientific notation (Hint: 1 year = 365 days, 1 day = 24 hours).(1 point)
Responses
1.314 × 10−4
1.314 times 10 superscript negative 4 baseline
1.314 × 105
1.314 times 10 superscript 5 baseline
1.314 × 104
1.314 times 10 superscript 4 baseline
1.314 × 10−5
1.314 times 10 superscript negative 5 baseline
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To find the number of times an average person blinks in a year, we need to multiply the number of blinks per hour by the number of hours in a day and the number of days in a year.
15 blinks/hour * 24 hours/day * 365 days/year = 131,400 blinks/year
In scientific notation, this is written as 1.314 × 10^5.
So, the correct answer is 1.314 × 10^5.
To find the number of times an average person blinks in a year, we need to multiply the average number of blinks per hour by the number of hours in a year.
The average number of blinks per hour is 15.
To find the number of hours in a year, we multiply the number of days in a year (365) by the number of hours in a day (24).
365 days × 24 hours = 8,760 hours
Now, we multiply the average number of blinks per hour (15) by the number of hours in a year (8,760).
15 blinks/hour × 8,760 hours/year ≈ 131,400 blinks/year
Writing this value in scientific notation, we move the decimal point three places to the left:
1.314 × 10^5
Therefore, the answer in scientific notation is 1.314 × 10^5.
To find the answer to this question, we need to multiply the number of blinks per hour (15) by the number of hours in a day (24) and then by the number of days in a year (365).
So the calculation would be:
15 blinks per hour * 24 hours per day * 365 days per year
Let's do the calculation:
15 * 24 * 365 = 131,400
So an average person blinks 131,400 times in a year.
Now let's write this answer in scientific notation. Scientific notation is a way to represent very large or very small numbers using powers of 10.
131,400 can be written as 1.314 × 10^5 (1.314 times 10 raised to the power of 5).
Therefore, the correct answer in scientific notation is:
1.314 × 10^5.