The ratio of pink flowers to purple flowers is 4 to 6. If there are 30 pink flowers, how many purple flowers are there?

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

|z| > (1/2) {-1/2, 1/2} {z|(-1/2) < z < (1/2)} {z|z < (-1/2) ∪ z > (1/2)}

Find the volume v of the solid obtained by rotating the region bounded by the given curves about the specified line. y = x â’ 1 , y = 0, x = 5; about the x-axis v = sketch the region. sketch the solid, and a typical disk or washer.