Nicks rate is 7 yards per second.
We use rulers obviously because the length of rulers are about 4 more times longer than hands. Hope this helps you :]
Number of white chips = 4
Number of black chips = 6
Total number of chips = 4 + 6 = 10
Choosing the first white chip:
p(white chip) = 4/10 = 2/5
Now the numbers are:
Number of white chips = 3
Number of black chips = 6
Total number of chips = 3 + 6 =
Choosing the second white chip:
p(white chip) = 3/9 = 1/3
p(white chip followed by white chip) = 2/5 * 1/3 = 2/15
Let n= the number 3/4n - 9 >_42 {n|n>_68}
