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Tems11 [23]
3 years ago
10

A parabolic microphone used on the sidelines of a professional football game uses a reflective dish 24 inches wide and 6 inches

deep. How far from the bottom of the disk should the microphone be placed?
a.) 6 in
b.) 5.8 in
c.) 5.2 in
d.) 4 in
Mathematics
1 answer:
Strike441 [17]3 years ago
5 0
The answer is a.
When you are solving problems like this you would use the equation y^2=4ax. The x and Y would be the coordinates. Based on the equation you have given the coordinates would be (6,12) and (6,-12), (24 is split up evenly between the y-axis).  
Then we go on to solve the equation by plugging in the numbers 12^2=4a(6)
144=24a
144/24=24a/24
6=a
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The table shows how much money Edguardo earns as a golf coach. He charges a flat fee of $38, plus $22 per hour. Complete the tab
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