Asocial security number consists of nine digits in a particular order, and repetition of digits is allowed. if randomly selecting digits for one social security number, what is the probability that you get the social security number of the presidents?

Using the quadratic formula find the zeros of the given polynomial -5x^2+3x-11

Organic apples are on special for $1.50 per pound. does total cost vary inversely or directly with the number of pounds purchased? find the cost of 3.4 pounds of apples. a. inversely: $5.10 b. directly; $5.10 c. inversely: $2.27 d. directly; $2.27

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'