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ZX-D99E44F02FBluebook试题6 · 第 10 题
Bluebook试题6 · 原库模块 1 · Q10 原库参考解析
An egg is thrown from a rooftop.The equation \( h=-4.9t^2+9t+18 \) represents this situation, where h is the height of the egg above the ground, in meters, t seconds after it is thrown. According to the equation, what is the height, in meters, from which the egg was thrown?
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