Find the commom ratio for the following sequence 1/2, -1/4, 1/8, -1/16

Common ratio = -1\2

Step-by-step explanation:

Common ratio is referred to as the ratio by which the sequence is attaining its next value.

In a sequence say,   a_1,a_2,a_3...a_n the common ratio is calculated by :

In The sequence given here : a_1 =1, a_2= -1\4 , a_3 = 1\8 , a_4= -1\16

Common ratio (r) =

3 is greater then both of those numbers

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.