Point c(2, 2) is the center of the circle. what is the ratio of the length of line segment ac to length of line segment dc

A33 gram sample of a substance that's used to detect explosives has a k-value of 0.1473. n = noekt no = initial mass (at time t = 0) n = mass at time t k = a positive constant that depends on the substance itself and on the units used to measure time t = time, in days

The vertices of a triangle are a(7.5), b(4,2), and c19. 2). what is

Math i have no idea how to do a and b