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

What sparked off Shays''s Rebellion? unemployment high taxes and foreclosures currency devaluation high farm tariffs
show that 40 is one tenth of 400
what is 14,494 to the nearest ten thousand feet
Please Help. I need to know how to get the answer.
A Wood carver has made 179 carved animals. The animals will be shipped in boxes that hold only 8 animals each. How many boxes will be completely filled ? How ma
How did the US change socialy between 1776 and 1870?
Which of the following were changes America experienced during the second half of the nineteenth century? More then one answer a war with Great Britain major t
Another term for doing your fair share of work is A. balancing horizontal and vertical relationships. B. being prompt. C. carrying your own weight. D. communic
the average elevation of the city of new orleans louisiana is 0.5 m below sea level the highedt point in louisiana is driskill mountain at about 163.5 m higher
centerville has a population of 9000. north fork has 18/25 population of centerville. what is the population of north fork?