What is the length of the line segment with endpoints (8,−10) and (8, 20) ?

a.8

b.10

c.16

d.30

The reflexive property of congruence lets you say that ∠pqr ≅

Lucy is a dress maker. she sews \dfrac47 7 4 of a dress in \dfrac34 4 3 hour. lucy sews at a constant rate. at this rate, how many dresses does lucy sew in one hour? include fractions of dresses if applicable

Given the expression (7 ? 4i) ? (2 + 6i), perform the indicated operation and write the answer in the form a + bi.