Preciso urgente da 8, 9,10, 11,12
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8.
800 --- 3h
(800÷3=) 266,67 --- km/h
ou seja ca de 267km/h
9.
1,5m --- 1s
300m --- (300÷1,5=) 200s = 3min20s
10.
800km --- 2h
(800÷2=) 400km --- 1h
ou seja 400km/h
11.
1200m --- 60s
(1200÷60=) 20m --- 1s
ou seja 20m/s
12.
65km --- 1h
(65*4=)260km --- 4h
800 --- 3h
(800÷3=) 266,67 --- km/h
ou seja ca de 267km/h
9.
1,5m --- 1s
300m --- (300÷1,5=) 200s = 3min20s
10.
800km --- 2h
(800÷2=) 400km --- 1h
ou seja 400km/h
11.
1200m --- 60s
(1200÷60=) 20m --- 1s
ou seja 20m/s
12.
65km --- 1h
(65*4=)260km --- 4h
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Espero ter ajudado!!!
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