The if the compound interest of rupees 500 for 1 year is 15 find the rate of interest .​

The hypotenuse of a 45 -45 -90 triangle measure 7 square root 2 units

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)

Worth 100 points need the answers asap first row -x^2 2x^2 (x/2)^2 x^2 x is less than 2 x is greater than 2 x is less than or equal to 2 x is greater than or equal to 2 second row -5 -5/2 4 5 •2 is less than x& x is less than 4 •2 is less than or equal to x & x is less than or equal to 4 •2 is less than or equal to x& x is less than 4 •2 is less than x& x is less than or equal to 4