Find the measures of the interior angles of the triangle. A 30° B 40 С

A = 110°

Step-by-step explanation:

All triangles have angles that add to a sum of 180°

That means you can simply subtract angle B and C from 180 to get angle A

180 - 30 - 40 = 110°

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.