What is a notemarker?

A circle with diameter 3 meters with a path of 50 cm around itwhat is the area of the big circle? How many pounds of HTH chlorine 65 percent will it take to make 435 gallons of a 100 ppm solution .? How much interest does 40000.00 earn at 3.5 percent over 1 year? What is a 9 sided polyhedron called? How do you figure out mixed fractions? How do you write 8.07 in expanded form? What is 10 to the 15Th power? How do you write 0.47 as a fraction in simplest form? What is 50 over 9 as a fraction? A plane curve with each point on the curve equidistant fom fixed point at the center of figure? What is 8300 divided by 3600? What If decimals didn't exist? Are multiples of 8 also multiples of 2? Can you Give 2 example for each kind? Is y-2.5x a proportional relationship or no? What is the circumference if the diameter is 24? What are the most digits of pi calculated? What is the product of 2 and 5 then divided by 3? Does 55 percent linen and 45 percent cotton shrink in the wash? What number is used to convert ounces to cubic centimeters?