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 ( 46+ )
Otras preguntas
Camryn earns $198.60 per week. She works 15 hours each week. How much does Camryn earn per hour?
The battle of gettysburg a. was a resounding victory for the north. b. was a terrible loss for the north. c. was a victory for the south. d. was the last time t
Which statement best explains how natural selection determines differential survival when a population is under resource stress? A. Individuals with favorable
The necklace charm shown has two parts, each shaped like a trapezoid with identical dimensions. What is the total area, in square millimeters, of the charm?
help with this chemistry problem
Read the description. A young driver buys the same car that most of his friends are driving. What type of advertising persuasion is being used? A.) testimonial
PLEASE HELP = simplify 3/4(-10+2/5)
Can you share 35 equally?
Tina bought two sweaters for $15.50 each and a skirt for $19. What was the total amount of her bill if she had to pay a sales tax of 5.75%? a. $36.4
At a local department store, pants have been reduced to $26. this price is at 68.4% of the original price for pants. given this, what was the original price of
