To find the difference between the high end and the low end of the range, we subtract the low end from the high end.
High end: 2.329×10^-² cm per hour
Low end: 6.849×10^-⁴ cm per hour
Difference = (2.329×10^-²) - (6.849×10^-⁴)
= 2.329×10^-² - 6.849×10^-⁴
To subtract these numbers, we need to express them with the same exponent. In this case, we can multiply the low end by 10^2 to make the exponents the same.
= 2.329×10^-² - (6.849×10^-⁴)×(10^2)
= 2.329×10^-² - 6.849×10^-²
Now that the exponents are the same, we can subtract the numbers.
= (2.329 - 6.849)×10^-²
= -4.52×10^-²
The difference between the high end and low end of the range is -4.52×10^-² cm per hour.
Human hair grows at a rate of about 6.849×10^-⁴ cm per hour to 2.329×10^-² cm per hour. The rate depends on gender, genetics, age, and health. Find the difference between the high end and the low end of the range. Express your answer in scientific notation. Do not round your answer.
□cm per hour
1 answer
1 answer