Here are two number machines, A and B. Input
Output
A х
x 5 - 4
B
Х
x3
+ 8
Both machines have the same input, X.
Work out the input that makes the output of A three times the output of B.

the expression (1.26)2t reveals the approximate rate of increases in the number of plants semiannually.

hope this : )

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.