Предмет: Алгебра, автор: Vadim20028

СРОЧНО НАДО ДАЮ 30 баллов!!!!!!!!!!!

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Ответы

Автор ответа: NNNLLL54

0

Ответ.

Точка пересечения прямых принадлежит как первой, так и второй прямым . Можем приравнять ординаты .

$\bf y=1,3x-4\ \ \ ,\ \ \ y=12-2,7x\ \ \ \Rightarrow \\\\1,3x-4=12-2,7x\\\\1,3x+2,7x=12+4\\\\4x=16\\\\x=4$

Найдём ординату : $\bf y=1,3\cdot 4-4=1,2$

Точка пересечения прямых имеет координаты ( 4 ; 1,2 ) .

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1Manka1: Там вместо минуса должен быть плюс...

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