How many days are there in 5 decades?

How many times does the second hand go around the clock a day? The sum of what two consecutive whole numbers equals 15? How do you write 4 billion 497 in standard form? What 10 equals P for Q in S? How much 30 percentage of 30 percentage? What are regions on a geoboard? What books were written but not used in the bible? What speed to travel 112 miles in 330 minutes? What 14 coins make 25 cents? Is a octagon and a hexagon the same thing? What is the volume of a ball whose radius is 10cm? What is the surface area of a cylinder whose radius is 8cm and height is 10cm? How do you rename the number 36? Is 580 divisible by 6? Is 95 the sum of integers between 1 and 500? Why is a pyramid of biomass narrower at the top than at the base? The area of a square is 81 square inches what is the length of each side? What is the range of y equals arc cos x? What is the circumcenter of a triangle? What percent of 4000 is 6?