2. Convert the following from standard form to vertex form:
g(x) = -5t2 - 10t + 15

y = -5(x+1)^2+20

Step-by-step explanation: I haven't done any math in a long time so take this with a grain of salt but they were equivalent on the calculator.

associative property of multiplication

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.