What is the square root of -100

uses imaginary numbers

first answer gets brainliest

10i

Step-by-step explanation:

Since you can not have a square root of a negative number, you will still find the root if it was a positive number but add the i for imaginary after it.

The square root of 100 is 10 but since it is a negative you add the i. So it's 10i.

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.

the answer to your question is c.)   volcanoes built the mountains and earthquakes tore them down.

step-by-step explanation: