A semicircular window has a diameter of 10m what is the perimeter of the window use 3.14 for pi ? Please help it’s worth 20 points!!!

Aiden buys two bags of chips at $1.09 each and a 20 ounce soda for $1.20 at the gas station. he knows that the state tax is 5.5. how much change will he receive from a $5 bill?

Draw a tape diagram to represent each situation. for some of the situations, you need to decide what to represent with a variable andre bakes 9 pans of brownies. he donates 7 pans to the school bake sale and keeps the rest to divide equally among his class of 30 students

Is the square root of 4 plus the square root of 16 rational?