Seudónimo Seudónimo
  • 02-02-2015
  • Mathematics
contestada

Solve each system of linear equations by substitution.
3x - 2y = 9
y = 2x - 7 Pease show all steps

Respuesta :

VzDeath
VzDeath VzDeath
  • 02-02-2015
[tex]3x-2(2x-7)=9 \\ 3x-4x+14=9 \\ -x+14=9 \\ -14\ \ \ \ -14 \\ -x=-5 \\ /-1/-1 \\ \ \ x=5[/tex]
Answer Link
Аноним Аноним
  • 02-02-2015
3x-2y=9 will be
3x-9=2y and
(3x)/2-9/2=y

2) y=2x-7

if you mean the intersection , so y=y
(3x)/2-9/2=2x-7
1,5x-4,5=2x-7
-4,5+7=2x-1,5x
2,5=0,5x
x=2,5/0,5
x=5 is the answer
Answer Link

Otras preguntas

You just watched a commercial in which a popular singer picks up a soda before going on stage. When the singer drinks the soda, he appears to feel more confiden
what event revolutionized the way people accessed and consumed ideas and information during the Renaissance A) Raphael's engraving technology led to mass-produc
Answer the question above
Air that is saturated is said to have what type of humidity?
Why was the neolithic revolution a turning point in history?
use the graph to find the solution of the system of equations {y = x^2 + 6x + 8 {y = x + 4
which type of graph is used to compare parts of a whole? line graph, bar graph, or pie graph?
Marie Curie Speech: The Discovery of Radium Answers PLEASE HELP
Answer the question above
Name one characteristic that all protists have in common that separates them from monerans. Also what is a Plasmodium?