Answers: 2
![\bf \begin{cases} 4x-2y=5\\[1em] 4x+y=-4\implies \boxed{y}=-4-4x \end{cases} \\\\\\ \stackrel{\textit{plugging in \boxed{y} in the 1st equation}}{4x-2\left( \boxed{-4-4x} \right)=5}\implies 4x+8+8x=5 \\\\\\ 12x=-3\implies x=\cfrac{-3}{12}\implies \blacktriangleright x=-\cfrac{1}{4} \blacktriangleleft](/tpl/images/0031/8737/f74bf.png)
![\bf \boxed{y}=-4-4x\implies y=-4-4\left( -\cfrac{1}{4} \right)\implies y=-4+1\implies \blacktriangleright y=-3 \blacktriangleleft \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ ~\hfill \left( -\frac{1}{4}~~,~~-3 \right)~\hfill](/tpl/images/0031/8737/6f891.png)
Another question on Mathematics
Mathematics, 21.06.2019 22:00
Which word in the sentence below is an interrogative pronoun? who is picking us up from school? whousisfrom
Answers: 1
Mathematics, 22.06.2019 01:00
Which number produces an irrational number multiplied by 1/3
Answers: 1
Mathematics, 22.06.2019 02:00
Acompound inequality is graphed, and its graph consists of all real numbers. which open scentence could have resulted in this solution set r> 3 or r< -2. r< 3 or r< -2. r> 3 or r> -2. r< 3 or r> -2 plz asap
Answers: 1
Mathematics, 22.06.2019 04:50
Click on the number until you find the right quotient. 12x^a y^b ÷ (-6x^a y)
Answers: 1
You know the right answer?
Solve the system 4x-2y=5 and 4x+y=-4...
Questions
Mathematics, 01.12.2021 23:50
Biology, 01.12.2021 23:50
Mathematics, 01.12.2021 23:50
Mathematics, 01.12.2021 23:50
Mathematics, 01.12.2021 23:50
History, 01.12.2021 23:50
