Solve for xxx. x^2 + 12x + 36 = 0x 2 +12x+36=0x, squared, plus, 12, x, plus, 36, equals, 0 x=x=x, equals

x = -6

Step-by-step explanation:

x² + 12x + 36 = 0

(x + 6)² = 0

x = -6

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.