If you help me with these then I will give brainiest
20 points
5 questions

1st I think is C 2nd I think is D

Step-by-step explanation:

I dunno tho I hope it's right:/

Step-by-step explanation:

the answer of 2nd question is A

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.

x-3y=4

step-by-step e