In a given rectangle, the longer sides are 7 units longer than the shorter sides. if we let the shorter sides be represented as x, write an expression below that represents the perimeter.
a
2x + 7
b
4x2 + 49
c
4x + 49
d
4x + 14

D because the two longer sides are 7 unites longer, meaning you need to add 14 (7x2) to the final product

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.

replication and blocking

step-by-step explanation: