Ineed in this question right 4.5 + π is a. rational because it is a terminating decimal. b. irrational because it is a repeating decimal. c. irrational because it is a non-terminating and non-repeating decimal. d. rational because it is a non-terminating and non-repeating decimal.

(c) irrational because it is a non-terminating and non-repeating decimal.

Explanation: Because of the number π which is irrational, the expression 4.5 + π is also irrational. Irrational numbers are ones that cannot be expressed as a ratio of integers. As such they have non-terminating decimal expansion with no pattern in the decimal digits (incl. no repetition)

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.

is there a picture

step-by-step explanation: