The diameter of a human hair is 9 · 10-5
meters. The diameter of a spider's silk is
3 . 10-6 meters.
How much greater is the diameter of a
human hair than the diameter of a spider's
silk?
Write your answer in scientific notation.

Carson has only $20 bills and $10 bill in her wallet. the total value of the bills is $50. she has 1 more $20 bill than $10 bills. how many each kind of bill does carson have? a. one $20 and two $10 bills b. two $20 bills and one $10 bill c. one $20 bills and three $10 bills d. two $20 bills and two $10 bills

Def rotates 90 clockwise about point a to create d’ e’ f’. therefore, which equation must be true ?

Five friends found a dollar on the ground and decided they each should get 1/5 of it. what amount of money will each friend get? $0.05 $0.20 $0.30 $0.80