Leon drove 100 miles in 2 hours. c how far can leon drive in 2 hours and 40 minutes?

 miles

Step-by-step explanation:

If Leon can drive 100 miles in 2 hours,

He can drive miles in 1 hour.

Since there are 60 minutes in 1 hour, what fraction of an hour is 40 minutes?

 of an hour

So in 40 minutes he can drive miles

In 2 hours and 40 minutes, he can therefore drive:

  miles

x = 23.78

step-by-step explanation:

0.02

step-by-step explanation:

time of 9 192 631 770 periods of the radiation corresponding to the transition between the 2 hyperfine levels of the ground state of the caesium 133 atom at 0 k (but other seconds are sometimes used in astronomy)