Ash0405
Ash0405
02-02-2015
Mathematics
contestada
Solve by substitution
X+3y=1 and -3x-3y=-15
Respuesta :
Аноним
Аноним
02-02-2015
[tex]x+3y=1\\ -3x-3y=-15\\ add\quad the\quad equ.\\ (x+3y)+(-3x-3y)=1-15\\ x-3x+3y-3y=-14\\ -2x=-14\\ x=\frac { -14 }{ -2 } \\ x=7\\ Let's\quad rewrite\quad the\quad equ.\\ 7+3y=1\\ 3y=1-7\\ 3y=-6\\ y=\frac { -6 }{ 3 } \\ y=-2[/tex]
Answer Link
VER TODAS LAS RESPUESTAS ( 38+ )
Otras preguntas
What is civics? What does civics include? Explain the role of citizens in civics.
Glaciers that cover large sections of entire continents or other large land masses are classified as _____.
To improve the state’s finances after the Revolutionary War, the Massachusetts legislature a. ordered that additional paper money be printed. b. passed a law en
Find the surface area of the prism (I'll post a pic)
An arch construction provides ______(1)______, because, the pieces that make up the arch apply force ________(2)________.
Describe the xyz affair?
What's the difference between current balance and available balance?
The number of chromosomes found in a human ovum
The wildcats scored an average of 56 points per game during the four-game tournament. if their scores for the first three games were 48, 57, and 52 points, what
1. part A how is Conversational Ballgames excerpt of expository essay organized A.cause and effect B.compare and contrast C.problem and solution D.chronologi
