I got 2y-(1)/(y^(3)+2y) but it said to simply further. Can someone please help?

Consider circle h with a 3 centimeter radius. if the length of minor arc what is the measure of zrst?

7. if the value of x varies directly with the value of y, and x = 3 when y = 21. what is the valu y, and x = 3 when y = 21. what is the value of x when y = 105?

The area of a rectangle is 10 cm^2. one side of the rectangle is x cm. express the perimeter of the rectangle in terms of x and show that this rectangle cannot have a perimeter of 12 cm. the perimeter of the rectangle in terms of x is __ cm