peacelillady1030
31.07.2019 •
Mathematics
The inn has ten rooms. one half of the rooms are reserved for friday. the rest are vacant. if 2 more rooms are reserved for friday, what will be the total number of occupied rooms for friday?
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Ответ:
(x+4)^2 / 9 - (y+3)^2 / 16 = 1
a^2 = 16 and b^2 = 9
a = +4 and -4
b = +3 and -3
Center is (-4, -3)
Vertices is (-4 + a, -3) and (-4 - a, -3)
Vertices is (-1, -3) and (-7, -3)