Brad and barb are trying to find the length of a line segment connecting two points, (x1, y1) and (x2, y2). brad uses the formula d = (x2 - x1)2 + (y2 - y1)2 . barb uses a different formula, but still gets the right answer. which formula could she have used?

Ineed i do not understand i'm only 8

Consider the polynomials given below. p(x) = x4 + 3x3 + 2x2 – x + 2 q(x) = (x3 + 2x2 + 3)(x2 – 2) determine the operation that results in the simplified expression below. 35 + x4 – 573 - 3x2 + x - 8 a. p+q b. pq c. q-p d. p-q

In a survey of 1015 adults, a polling agency asked, "when you retire, do you think you will have enough money to live comfortably or not. of the 1015 surveyed, 534 stated that they were worried about having enough money to live comfortably in retirement. construct a 90% confidence interval for the proportion of adults who are worried about having enough money to live comfortably in retirement.