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$ x - 4 = 9 \Rightarrow x = 13 $ - AMAZONAWS
$ x - 4 = 9 \Rightarrow x = 13 $ - AMAZONAWS
📅 March 11, 2026
👤 scraface
Mar 11, 2026
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📌 Determine the hourly remaining percentage:
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📌 Solution:** To solve this problem, we use the concept of combinations, as the order in which the instruments are showcased does not matter. The number of ways to choose 4 instruments from 7 is given by the binomial coefficient \(\binom{7}{4}\). The formula for combinations is: