13-03-2015
Mathematics

contestada

Solve the equation with substitution 3x-2y=9 Y=2x-7

Respuesta :

13-03-2015

[tex]3x-2y=9 \\ y=2x-7 \\ \\ \hbox{substitute 2x-7 for y in the 1st equation:} \\ 3x-2(2x-7)=9 \\ 3x-4x+14=9 \\ -x+14=9 \ \ \ |-14 \\ -x=-5 \ \ \ |\times (-1) \\ x=5 \\ \\ y=2x-7=2 \times 5-7=10-7=3 \\ \\ \boxed{(x,y)=(5,3)}[/tex]

Answer Link

Otras preguntas

Work this out for meee

Which nation used both direct and indirect rule in India? A) France B) Britain C) japan

Two mutually exclusive investment opportunities require an initial investment of $10 million. Investment A pays $1.5 million per year in perpetuity, while inves

What is the solution of √1-3x = x+3 ?

*WILL MARK YOU BRAINLIEST!!!!!*

Select two specific components of the cell membrane and explain how each affects the permeability of the cell membrane. Meaning, what specific materials are reg

Read the following story summary. On a battlefield in World War II, a crazed squad leader thinks he sees a ghost wandering among the enemy foxholes on the far s

If 196L of air at 1.0 atm is compressed to 26000ml, what is the new pressure

Waterway Enterprises reported cost of goods sold for 2020 of $1,385,600 and retained earnings of $5,415,900 at December 31, 2020. Waterway later discovered that

Which statement supports the idea that waiting to become a parent is advantageous? Teen parents are 11 percent more likely to divorce than older parents. About