Answer:
13.8
Explanation:
because they're similar, we know that
zy ÷ wz has the same ratio as xy ÷ wv
12 / 15 = 11 / wv
cross multiply
12wv = 165
÷ 12 ÷12
wv = 13.75
13.75 rounded to nearest tenth is 13.8
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