Let ∠x and ∠y be complementary. if sin(x) = 3/5
and cos(x) = 4/5. then what is the value of sin(y)?
a)3/5
b)4/5
c)5/4
d)5/3

Find the area of a parallelogram with base 15 yards and height 21 2/3

The volume of gas a balloon can hold varies directly as the cube of its radius. imagine a balloon with a radius of 3 inches can hold 81 cubic inches of gas. how many cubic inches of gas must be released to reduce the radius down to 2 inches?

When solving this problem: 3025/5.5 = a/90.75 you get 49912.5 which would be the length of one of the sides of a square when the area is only 90.75 inches. is that answer correct, why, and how is it possible?