I am confused on what the reasons are.

1) Angle AOC + Angle COB = Angle AOB

Angle AOC = X

Angle COB = Y

putting in equation, we get

X + Y = AOB

2) Angle X + Y = AOB (proved above)

AOB = 90° ( given)

Angle X + Angle y = 90°

Angle X is the complement of Y

i'm not entirely sure

step-by-step explanation:

if you ask home depot or lowe's they might be able to you out

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.