If two angles are both obtuse, the two angles are equal

False

Step-by-step explanation:

Just because two angles are both obtuse does not necessarily mean that the two angles are equal.

Obtuse just means that the angles are above 90 degrees.

One angle could be 91 degrees while the other could be 150, and those angles are not equal.

ab will be equal to

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.