As of​ 2011, the following are the ages at which a​ country's presidents were inaugurated. Construct a grouped frequency distribution for the data. Use 41​ - 45 for the first class and use the same width for each subsequent class.

Age: 41-45, 46-50, 51-55, 56-60, 61-65, 66-70

What are all these ages frequency's?

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.

(0.2)+(-8)=0.3+-3+0.3m is the equation i guess? ?

step-by-step explanation: