2. el perimetro de un rectangulo es 64 pies. su largo es 12 pies mas que 3 veces su ancho. halla las dimensiones del rectangulo

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.

make sure you have version 2.50

try looking in the very back of the book : )

step-by-step explanation:

you can download it here