A student performed row operations on a matrix as shown below.
1-4 1 24 -4. Ll
0 -1 3 1 0 -1 3 11
3 2 45 30 107
Which operations did the student perform?
2R2+R3 R3
2R3+-R3 R3
2R2+R3 R2 R3
2R2 R3

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.

y=-2.5x+12.5

step-by-step explanation:

5y=2x+10

y=0.4x+2

slope=-2.5

5=-2.5*3+b

b=12.5