Simplify 2 2/5 plus 2 -1/5

Find the number of positive three-digit even integers whose digits are among 9, 8, 7,5, 3, and 1.

The equation of a parabola is given. y=18x2+4x+20 what are the coordinates of the focus of the parabola?

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.)