Question

A human hair was measured to be 8.0×10−4 inch thick. A cat hair was measured to be 4.0×10−1 inch thick. How much greater is the thickness of the cat hair than the human hair? Write the answer in standard form.

Answer 1

time 4learning answer is 500

Explanation:

Answer 2

Human hair: 8.0 x 10-4 = 0.00080

Cat hair: 4.0 x 10-1 = 0.40

Subtracting: 0.40 - 0.00080 = 0.3992

Using rules of precision, the answer becomes 0.40