Mathematics, 03.04.2020 02:37 egyptforrest9892

4. The reflecting dish of a parabolic microphone has a cross-section in the shape of a parabola. The microphone itself is placed on the focus of the parabola. If the parabola is 24 inches wide and
9 inches deep, how far from the vertex should the microphone be placed?
6 inches
8 inches
16 inches
4 inches

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