Subtract the second equation from the first.

6x+5y=16
- (6x+2y=10)

a. 3y=6
b. 12x=26
c. 7y=26
d. -12x=6

Option A

3y = 6

Step-by-step explanation:

6x + 5y = 16

- 6x - 2y = - 10

+ 3y = 6

Thus, The answer is 3y = 6

-TheUnknownScientist

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.