Please help explain these to me! The perimeter of a poster board is 302 centimeters. The length is 45 centimeters longer than the width. Find the length and width of the poster board.

The total cost Kirsten paid for registration and classes at the digital academy was $2584. Registration cost $704 and each class was $376. How many classes did she take?

Four people decide to equally share the cost of starting a small business. If they let a fifth person join this endeavor, the cost for each one would be reduced by $20,000. What is the total cost of starting this business?

135 is your answer

step-by-step explanation:

try 180 times three then divide that number by 4 (sides) to get your answer. im glad to : )

idk

step-by-step explanation:

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.

idk

step-by-step explanation: