Which value is NOT equivalent to 8.5%?

8.5/100
0.085
85/1000
8 1/2%
All of the values are equivalent to 8.5%

For the equations below which statement is true ?

What is the value of the discriminant, b2 ? 4ac, for the quadratic equation 0 = x2 ? 4x + 5, and what does it mean about the number of real solutions the equation has?

Which angle has the same measure as the dehedral angle formed by the orange face and the purple rectangle