Answer:
0.8
Explanation:
Jessica can swim a lap in seconds
Converting it into decimals,
Means seconds
Means Jessica can swim a lap in 29.4 seconds
Marta can swim a lap in 28.7 seconds.
So, Martha is faster than Jessica by seconds
8 Kilometers
1m=0.001km
So...
8000m=8km
4.7m questions
6.1m answers