2h+y/9h^2-y^2 - 4h^2/3h+y what is the least common denominator in this expression

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.

a - base

b - exponent

so,

its 60

4 x 12 = 48

3 x 4 = 12

48 + 12 = 60

yeeeet