Вопрос школьника по предмету Математика
решите сестему!
3х+5у=16
2х+3у=9
Ответ учителя по предмету Математика
3x+5y=16 /*2
2x+3y=9 /*(-3)
Получаем:
6x+10y=32
-6x-9y=-9. Складываем методом сложения.
6x+10y-6x-9y=32-9
y=23
Найдём x с помощью 2 уравнения(2x+3y=9)
2x=9-3y
x=9-3y/2
x=9-46/2
x= -37/2
x= -18,5
Ответ: (-18,5;23).
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Complete the sentences with the verbs in brackets.
After I graduated from university, I applied for a marketing position in a
prominent bank with branches all over the world. I didn’t get the job
because they wanted someone who spoke Spanish fluently. I
_____________ (could, take) Spanish in high school, but I didn’t. I took
an acting class instead. If I ________________ (take) Spanish, I
_____________ (get) the job. Just imagine, if I had actually gotten the
job, I ______________ (move) to Spain. My entire life
________________ (could, go) in a totally different direction. I could
have married. If that had actually happened, I probably __________
(stay) in Spain. I _____________ (might, have) children. Unfortunately, I
didn’t get the job and I didn’t go to Spain. I got a boring job and I live
alone. If I had just taken Spanish, my life _____________ (be) much
more interesting.
Swim,eat,find,drink,leave,see.