1/4 * 1/4 what does this equal

Find the volume of the solid bounded by the plane z=0 and the paraboloid z=1-x^2 –y^2

Factor 15x^3 - 5x^2 +6x-2 by grouping. what is the resulting expression

Acertain group of women has a 0.640.64% rate of red/green color blindness. if a woman is randomly selected, what is the probability that she does not have red/green color blindness? what is the probability that the woman selected does not have red/green color blindness? nothing (type an integer or a decimal. do not round.)