wally235
wally235
09-02-2017
Mathematics
contestada
How to solve 5x-y=-5 and 3x-6y=24 algebraically
Respuesta :
Tucon
Tucon
09-02-2017
[tex]\displaystyle\\ 5x-y=-5~~~\Longrightarrow~~~\boxed{y = 5x+5} \\ 3x-6y=24 \\ \cdots \\ 3x - 6(5x+5) = 24\\ 3x-30x-30=24 \\ 3x-30x=24+30 \\ -27x = 54\\\\ x = - \frac{54}{27} = \boxed{-2} \\\\ y = 5x+5 = 5\cdot (-2) + 5 =-10+5 = \boxed{-5}[/tex]
Answer Link
VER TODAS LAS RESPUESTAS ( 73+ )
Otras preguntas
Which law established martial law in the South after the Civil War? the vagrancy laws the Tenure of Office Act the Civil Rights Act of 1866 the Reconstruction A
Which type of group leadership has a communication pattern that flows from the top down?
Based on the comparison of your calories consumed and expended, do you plan on making any changes in your diet or activity level? Explain your answer.
The cost (in $/gal) of gasoline v) the price (in $/g) of platinum vi) the humidity (in %) of the atmosphere vii) the air pressure (in psi) in a tire viii) the h
How is atomic number different from mass number?
Convert: 6y + y² = x² from rectangular to polar form.
bose shouldn't have interrupted the teacher.......? could she or should she which one is correct
Solve the equation 100x^2=64
A detailed, well-researched biography of a famous historical person is technically an example of the __________ method of research.
In the movie X-Men: First Class (2011), the character Mystique must decide between defending the people who hate her or using violence to gain human rights. Wha
