Плиз 2 задания сделайте. Created by x007. algebra-ru

1.а) x-x+y+2y=4+2 3y=6 y=2x+2=4x=2Ответ: (2; 2)б) {5x+2y=12 {4x+y=3 | умножим на "-2"{5x+2y=12{-8x-2y= -6Складываем уравнения:5x-8x+2y-2y=12-6-3x= 6x= -24*(-2)+y=3y=3+8y=11Ответ: (-2; 11)2. х - первое число у - второе число{x+y=33{x-y=7Складываем уравнения:x+x+y-y=33+72x=40x=2020+y=33y=33-20y=13Ответ: 20 и 13. Реклама Реклама Новые вопросы в Алгебра СРОЧНО ДАЮ 15 БАЛЛОВ 1) (Бали: 1) Знайдіть значення виразу (-0.75 - 3.25)2 2) (Бали: 1) Знайдіть різницю многочленів x-6xy-5+3y і x2 + 3x + 2xy +3. 3) … (Бали: 2) Запишіть у стандартному вигляді многочлен: -(3-5x)+6xy-(3+2xy)+8y-4xy 4) (Бали: 2) Знайдіть суму многочленів: a3 + b2 - 3 + 2ab2 та 2b2 + 3 - 4ab2 . 5) (Бали: 2) Обчисліть: КАРТИНКА 1 6) (Бали: 4) 1. Спростіть вираз: КАРТИНКА 2 2. Доведіть, що сума чисел і кратна 11. ( – число, у якому a десятків і b одиниць) ПОМОГИТЕ ПОЖАЛУЙСТА решить до утра, кто что сможет, дам 30 баллов Семь самолётов вылетают из аэропорта Москвы ровно в 13:00. Пункты назначения и длительности полётов показаны на диаграмме. Определи, сколько самолётов … успеют закончить полёт до 16:00. время, ч 7 6 5 4 Д. 3 2 1 47 Адлер Мадрид Пекин Омск Уфа Курск Чита Города Ответ: ?это тоже срочно плз=') Реши задачу Дима один вскопает грядку за 42 минуты, а его папа сделает то же самое за 21 минуту. За сколько минут Вскопакт грядку Димас папой вместе? … Ответ: за ? мин. СРОЧНО, МОЛЮ 13+ x/4=x+1пожалуйста помогите -9(8-9x)=4x+5нужна помощь помогите пожалуйста Яка з наведення рівностей з тотожністю? А 2 (а + 3) - (а-8) -За +9 Б 2 (а + 8) - (а-8) -За +6 в 2 (а + 3) - (а-з) - а + 9 г 2 (а + 3) - (а-3) -а +6 Установите соответствие между функцией и ее областью определения. 20 баллов даю решите уравнение 6x-(2x-5)=4(x+2) Предыдущий Следующий Реклама - это не так уж плохо Реклама - это не так уж плохо Понимаем - вы пришли сюда не за рекламой. Но она помогает нам предоставлять бесплатный доступ к Знаниям. Пожалуйста, внесите наш сайт в список разрешенных. 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Плиз 2 задания сделайте...

x007 @x007

October 2021 1 44 Report

Плиз 2 задания сделайте

Answers & Comments

m11m 1.
а) x-x+y+2y=4+2
3y=6
y=2
x+2=4
x=2
Ответ: (2; 2)

б) {5x+2y=12
{4x+y=3 | умножим на "-2"

{5x+2y=12
{-8x-2y= -6
Складываем уравнения:
5x-8x+2y-2y=12-6
-3x= 6
x= -2

4*(-2)+y=3
y=3+8
y=11
Ответ: (-2; 11)

2. х - первое число
у - второе число
{x+y=33
{x-y=7
Складываем уравнения:
x+x+y-y=33+7
2x=40
x=20

20+y=33
y=33-20
y=13
Ответ: 20 и 13.