The image shown has two triangles sharing a vertex:

what is the measure of ∠kml, and why?

y over 2 , because triangle jhk is congruent to triangle lmk
y + 50 degrees, because triangle jhk is similar to triangle mlk
115 degrees - y, because triangle jhk is congruent to triangle lmk
y, because triangle jhk is similar to triangle lmk

What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?

Quick! a survey of 57 customers was taken at a bookstore regarding the types of books purchased. the survey found that 33 customers purchased mysteries, 25 purchased science fiction, 18 purchased romance novels, 12 purchased mysteries and science fiction, 9 purchased mysteries and romance novels, 6 purchased science fiction and romance novels, and 2 purchased all three types of books. a) how many of the customers surveyed purchased only mysteries? b) how many purchased mysteries and science fiction, but not romance novels? c) how many purchased mysteries or science fiction? d) how many purchased mysteries or science fiction, but not romance novels? e) how many purchased exactly two types of books?

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?