For what values of x does f(x)= x^2 +9x +20 reach its minimum value?

Miranda is braiding her hair.then she will attach beads to the braid.she wants 1_3 of the beads to be red.if the greatest number of beads that will fit on the braid is 12,what other fractions could represent the part of the beads that are red?

Is the square root of 4 plus the square root of 16 rational?

18 16 11 45 33 11 33 14 18 11 what is the mode for this data set