Order each group from least to greatest first to answer get brainlest and 5 star rating

answer:

3. 1.7,-2,√2

5.3.7,√13,π+1

step-by-step explanation:

√2=1.4

√13= 3.60

π+1=3.15

x is variable or an unknown value to find

example:

2x = 5 which means x = 3

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.