zay179
17.10.2020 •
Mathematics
2x−5y−z=17
x+y+3z=19
−4x+6y+z=−20
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Ответ:
9.4 feet to the nearest tenth.
Step-by-step explanation:
This makes a right triangle so we use Pythagoras:
23^2 = 21^2 + d^2 where d is the required distance.
d^2 = 23^2 - 21^2
d^2 = 88
d = √88 = 9.3808