I need help on these questions can u make sure u do all of them cuz some people just only do one problem.

3x

Step-by-step explanation:

the distance between 0 and C = x

to make b 3 times distance of c to 0 we should multiply by 3

so X × 3 = 3X

if the distance of c to 0 equal to 1 cm means that x = 1

3x = 3

so be should place b 3 cm away from 0

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.

.95

step-by-step explanation: