What instrument do you use to mesure tide?

What is 3 and a half yd to feet? Why is René Descartes considered the father of analytical geometry? Who wrote Psalm 33? How do i write 12 in word form? How many times does 100 go into 910? What point on a cone is a vertex? Who where Albert Abraham Michelsons children and grandchildren? What is 34 subtract 17? How many cubes each of surface 4 sq cm can be made from a 8cm cube? Is a triangle with sides of lengths 16 63 and 65 a right triangle? What number would you round 9.4 and 62.6 to? Why does 12 divided by 3 equals 4? What is a person called if they can read a quipu? Are there different sizes of Magic 8 Balls? What does it mean for a number to be a solution in an equation? What is the area of a triangle if its base is 9 cm and its height is 8 cm? What is a division problem that equals 196? When adding two integers with opposite signs what is the answer going to be? When a client has left sided weakness what part of their sweater is put on first? How do you call a 56 sided polygon?