If y = 3 ab + 2 b 3, what is y when a = 1 and b = 2

18

Step-by-step explanation:

3 x( 1x2) = 6 plus...

2 x 2 x 3 =12

so 6 plus 12 is 18

y =18

Step-by-step explanation:

y = 3 × 1 ×2 + 2 ×2× 3

y = 6 + 12

y = 18

answer: -8.2562234e+13

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.