Apurse contains 21 coins consisting of nickels and dimes. find the number of coins of each kind if the total value is $1.65.

if 5n represents the value of the nickels, then which of the following expressions represents the value of the dimes?

the value of the dimes is 10(21 - 5)

hope this helps

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.