Find the length of a curve. y=(4-x^2/3)^3/2 from x=1 to x=8

Acircle has a circumference of 28.36 units what is the diameter of the circle

Acollection of coins has value of 64 cents. there are two more nickels than dimes and three times as many pennies as dimes in this collection. how many of each kind of coin are in the collection?

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 5x^2 + 10x