Someone Help me with this question

sounds & other waves originate from any vibrating object

step-by-step explanation:

let pq = qr = rs = x, and xz = y and zu = z.

if the horizontal lines are parallel, then corresponding segments are in proportion:

substitute:

therefore 3 = y = z.

xu = y + z → xu = 3 + 3 = 6

0.5?

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-thekoolkid1o1