Helppppp question 21,22
1 answer:
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Answer:
- 120 or 160
Step-by-step explanation:
<u>Solve the given quadratic equation:</u>
- 960 = 14x - 0.05x²
- x² - 280x + 19200 = 0
- x = (280 ±
)/2
- x = (280 ± 40)/2
- x = 120 or x = 160
