Answer:
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Explanation:
This process is called echolocation. The only animals that use this unique sense ability are certain mammals bats, dolphins, porpoises, and toothed whales. It now is believed that these animals use sound to "see" objects in equal or greater detail than humans
Since the third equation contains x an y but not z, eliminate z from the first two equations by adding twice the first equation to 5 times the second equation. The result is 31x + 14y = 76.
Now solve 31x + 14y = 76 and 7x + 5y = 18 by 5 times the first equation to -14 times the second equation. The result is 57x = 128. Then x = 128/57.
Substitute this into 7x + 5y = 18 to find y. Then substitute for both x and y in 3x - 3y + 5z = 13 to find z.
Explanation:
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