Tim broke his piggy bank on the floor. Inside, there was a bunch of nickels, dimes, and quarters. After counting the change, he had $4.50. He has a total of 20 coins. How many nickels, dimes, and quarters are there going to be? Write a series of equations to represent this situation.

Solve these problems: 1.what is the perimeter of an equilateral triangle with sides measuring 6cm? 2. a regular pentagon has sides measuring 3.2 cm. what is its perimeter? 3. a regular decagon has sides of 3.5mm . what is it’s perimeter? 4. a regular octagon has a perimeter of 64cm. what is the length of one of the sides? 5. a regular hexagon has a perimeter of 72mm . what is the length of one of the sides? 6. what is the perimeter of a rhombus with sides measuring 11m?