Answer:
Step-by-step explanation:
The unit rate of the 100m race is 2.12... m/s which you get by dividing the 100 meters by the 47 seconds. The unit rate for the 50m race is 2.08... m/s which you get by dividing the 50 meters by the 24 seconds. This means that the record for the 100m race is faster.
642.2 is the answer if you multiply 3.8x169
0.01 that should be your answer
Answer:
9
Step-by-step explanation:
easy