An airplane on autopilot took 5 hours to travel 4,200 kilometers. what is the unit rate for kilometers per hour?

approximately 700 km per hour

Step-by-step explanation:

5 * 60 = 300 4200/ 300 = 14

14 * 60 =840

840 * 5 = 4200

the expression (1.26)2t reveals the approximate rate of increases in the number of plants semiannually.

hope this : )

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)