The mean midday temperature recorded in june in a city in south california is 36ºc, and the standard deviation is 3ºc. assuming the data is normally distributed, the number of days in june when the midday temperature was between 39ºc and 42ºc is
a) 3
b) 4
c) 7
d) 12

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.