Add Numbers in Scientific Notation Practice

Question

Complete this assessment to review what you've learned. It will not count toward your grade.
5 of 55 of 5 Items
Question
A human hair has a diameter of about 4×10−3
inches. A fingernail is about 0.011 inches thicker. How thick is a fingernail? Write your answer as a decimal to 3 places.(1 point)
inches
Remaining Attempts : 3

Answer 1

To find the thickness of a fingernail in inches when a human hair has a diameter of \(4 \times 10^{-3}\) inches and the fingernail is \(0.011\) inches thicker, you can perform the following calculation:

1. Convert the thickness of the human hair to decimal form: \[ 4 \times 10^{-3} = 0.004 \text{ inches} \]

2. Add \(0.011\) inches to the thickness of the human hair: \[ \text{Thickness of fingernail} = 0.004 + 0.011 = 0.015 \text{ inches} \]

The thickness of the fingernail is \(0.015\) inches.

In decimal form to 3 places, the final answer is: \[ 0.015 \text{ inches} \]