Which of the following will not produce a triangle?

Step-by-step explanation:

The first 2 do sum up to 180 degrees, so the first 2 ARE triangles, but i cant see the full question of the 3rd and 4th one.

i think that you should ask google for the answer to that problem because if we don't know it google does

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.