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?

725 parts per hour.

step-by-step explanation:

hi there, this answer is actually really simple.

you can set it up as 1450/2 or 3625/5 to find the answer.

they want to know how much per hour is being made, so you just divide.

1450/2=725.

and that's how many are produced per hour.

hope this . : )

the 8 in 8,420 is in the thousands place so it's value is 8 thousand.

the 8 in 6,870 is in the hundreds place so it's value is 8 hundred.

divide 8000 by 800 to find the answer:

8000 / 800 = 10

the 8 in 8,420 is 10 times greater than the 8 in 6,870

might be the correct answer will be question number 2