Реши систему уравнений методом подстановки. 2−5(0,2v−2k)=3(3k+2)+2v 4(k−2v)−(2k...

golubchikp @golubchikp

August 2022 1 5 Report

Реши систему уравнений методом подстановки.
2−5(0,2v−2k)=3(3k+2)+2v
4(k−2v)−(2k+v)=2−2(2k+v)
срочно!!

Answers & Comments

rumanezzo

Verified answer

Условие:

$\left\{ \begin{array}{ll}2-5\cdot(0.2v-2k)=3\cdot(3k+2)+2v\\4\cdot(k-2v)-(2k+v)=2-2\cdot(2k+v)\end{array}$

Ответ:

k = -2; v = -2, или (-2; -2)

Решение:

Приведем систему к более простому виду:

$\left\{ \begin{array}{ll}2-v+10k=9k+6+2v\\4k-8v-2k-v=2-4k-2v\end{array}$

$\left\{ \begin{array}{ll}k-3v=4\\6k-7v=2\end{array}$

$\left\{ \begin{array}{ll}k=3v+4\\6(3v+4)-7v=2\end{array}$

$\left\{ \begin{array}{ll}k=3v+4\\18v+24-7v=2\end{array}$

$\left\{ \begin{array}{ll}k=3v+4\\11v=-22\end{array}$

Получаем v = -2; k = 3·(-2) + 4 = -2

2 votes Thanks 3

izvestno chto 30 chisla k na 20 bolshe chem 20 chisla b a 30 chisla b na 8 bol

Answer

golubchikp August 2022 | 0 Ответы

rasstoyanie mezhdu dvumya posyolkami po reke ravno 60 km eto rasstoyanie lodka propl

Answer

golubchikp July 2022 | 0 Ответы

pomogite reshit uravnenie s 3 neizvestnymi 2xx262x2x260

Answer

golubchikp July 2022 | 0 Ответы

razlozhi na mnozhiteli u11v211uv2

Answer

golubchikp July 2022 | 0 Ответы

obrazovyvaetsya li ot glagola otkryvat stradatelnoe prichastie proshedshego vrem

Answer

golubchikp July 2022 | 0 Ответы

obrazovyvayutsya li ot glagola uvyadat stradatelnye prichastiya

Answer

golubchikp July 2022 | 0 Ответы

postav zapyatye gde oni neobhodimy 1 v ogromnyh luzhah otrazilos nebo s plyvu

Answer

golubchikp July 2022 | 0 Ответы

prichastiya pereshedshie v sushestvitelnye opredeli kakim chlenom predlozheniya oni45af330abcd794fc065b825ec3b6c125 7038

Answer

golubchikp July 2022 | 0 Ответы

reshi uravnenie 9x22x1520 x1 x2 pervym vpishi menshij koren

Answer

golubchikp July 2022 | 0 Ответы

vyberi oshibki v privedyonnom tekste zapishi bukvy oboznachayushie vernye utverzhdeniya

Answer

Answers & Comments

Verified answer

izvestno chto 30 chisla k na 20 bolshe chem 20 chisla b a 30 chisla b na 8 bol

rasstoyanie mezhdu dvumya posyolkami po reke ravno 60 km eto rasstoyanie lodka propl

pomogite reshit uravnenie s 3 neizvestnymi 2xx262x2x260

razlozhi na mnozhiteli u11v211uv2

obrazovyvaetsya li ot glagola otkryvat stradatelnoe prichastie proshedshego vrem

obrazovyvayutsya li ot glagola uvyadat stradatelnye prichastiya

postav zapyatye gde oni neobhodimy 1 v ogromnyh luzhah otrazilos nebo s plyvu

prichastiya pereshedshie v sushestvitelnye opredeli kakim chlenom predlozheniya oni45af330abcd794fc065b825ec3b6c125 7038

reshi uravnenie 9x22x1520 x1 x2 pervym vpishi menshij koren

vyberi oshibki v privedyonnom tekste zapishi bukvy oboznachayushie vernye utverzhdeniya

рекомендуемые вопросы

Helpful Links

Helpful Social