Find the number of sides of a regular polygon if the sum of the its interior angles is 1620

How do you tell whether the ratios form a proportion

What is 0.5, 1/4, 0.75, 2/5 least to greatest

Gerry is borrowing money from a friend at a simple interest rate of 4%. If she borrows $2000 and plans to pay it back in 2 years, how much interest will she owe?

Whats the pattern from the number 4 to 16 to 36

Sam had two hundred twenty one dollars to spend on seven books. after buying them he had eighteens dollars. how much did each book cost"

Mr. Nowlings garden has a length that is 7ft more than twice the width. Draw a diagram to represent this situation. Label each side of the garden, and then write an expression for the perimeter.

The sum of 7 unequal positive integers is 61. What is the largest possible value that any of those integers can have?

The cost of Ms. Clark's restaurant meal is $25.50. As a tip, Ms. Clark gives the waiter 20% of the meal's cost. What is the total amount Ms$26.01. Clark pays, including tip? A.$26.01 B.$30.60 C.$32.64 D.$33.05

Phil has to pick two sports to write a report on. If there are 8 possible sports to choose from, how many different combinations of pairs are possible? A. 28 pairs B. 12 pairs C. 18 pairs D. 10 pairs

ms haley types 90 characters per minute. how many characters could she type in three minutes. what is the proportions