MUSIC A song has 28 beats in 4 seconds. At this rate, how many beats are there in 30 seconds?
2 answers:
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For this case we have the following expression:
Applying distributive property to the terms within parentheses taking into account that:
We have:
We add similar terms taking into account that:
Equal signs are added and the same sign is placed.
Thus, an equivalent expression is:
Answer:
