Ahuman 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.

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

time 4learning answer is 500

Step-by-step explanation:

since your problem is x^4 = 81, what you have to undeo is the "to the fourth power" part.

the inverse (opposite operation) of "to the fourth power" is "to the fourth root".

  (x^4) ^ ¼   = 81 ^ ¼  

  81 = 3^4     so (3 ^ 4) ^ ¼   =   3 ^ 1   = 3

by hand: (3 ^ 4) ^ ¼   =   3 ^ (4 x ¼) = 3 ^ 1   = 3   (when you take a power to a power, multiply the exponents.)

or, do it by calculator. one way of finding the fourth root is to use ^ (1/4)

step-by-step explanation: