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Carmen takes 1 breath every 4 seconds. How many breaths will she take in 1 minute?
2 answers:
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Answer:
x = - 10 ±
Step-by-step explanation:
y = (x + 10)² , or
(x + 10)² = y ( take square root of both sides )
x + 10 = ± ( subtract 10 from both sides )
x = - 10 ±