A=12h(a+b) solve for h. a. h=2aa+b b. h=a+b2a c. h=a2(a+b) d. h=2(a+b)a

h = 2A/a+b  

or 1st answer

Step-by-step explanation:

news channels,news papers,and the internet

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.