Cuanto es 14x20

Cuanto es 56x20

Cuanto es 67x20

Cuanto es 23x20

Cuanto es 45x20

Cuanto es 64x20

14×20=280

56×20=1,120

67×20=1,340

23×20=460

45×20=900

64×20=1,280

answer: 177/8

step-by-step explanation:

54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.