The device is a parabolic dish with a sound booster at its focus. The device is 6ft across and 20 inches deep. Determine the distance from the sound booster to its vertex. a. 81/5 inches b. 64/9 inches c. 90/7 inches d. 55/10 inches

The device is a parabolic dish with a sound booster at its focus. The device is 6ft across and 20 inches deep. Determine the distance from the sound booster to its vertex. a. 81/5 inches b. 64/9 inches c. 90/7 inches d. 55/10 inches

Mathematics For Machine Technology

8th Edition

ISBN:9781337798310

Author:Peterson, John.

Publisher:Peterson, John.

Chapter48: Applications Of Formulas To Spur Gears

Section: Chapter Questions

Problem 60A

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Question

The device is a parabolic dish with a sound booster at its focus. The device is 6ft across and 20
inches deep. Determine the distance from the sound booster to its vertex.
a. 81/5 inches
b. 64/9 inches
c. 90/7 inches
d. 55/10 inches

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