If `16-y^(2)=10(4+y)`, what is y?

If ((1)/(2))^(y)=(1)/(4)xx2^(y) , what is y?

For positive integers y and z, if z^(2)=y^(3) and y^(2)=16 ,what is the value of (y)/(z) ?

If ((5x-y))/((5x + y)) =3/7, what is the value of ((4x ^(2) + y ^(2) -4 xy ))/( ( 9x ^(2) + 16 y^(2) + 24 xy)) ?

If x^(4)+y^(4)=17 and x+y=1, then what is the value of x^(2)y^(2)-2xy?( a) 8 (b) 10(c)12 (d) 16

If (9)/(10)y-(7)/(10)y=(4)/(2)-(8)/(15) , what is the value of y?

If 3x+5y=44 and 10x-2y=16 what is the value of x?

Find the area of the region founded by x^(2)=16y,y=1,y=4 and the y-axis in the first quadrant.