Question 1196539
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From SECOND equation, you should calculate the time needed to cover 340 feet horizontally
at the horizontal rate of 103.9 ft/s.


Having it, you should substitute this time value into FIRST equation and CHECK, 
if the corresponding height is greater than 10 feet.
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So, &nbsp;all needed instructions are given to you;


the rest is boring, mechanistic and routine arithmetic, &nbsp;feasible for every student.