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

Which candidate did most Florida residents support for president on the eve of the Civil War
what is the measurement of each angle ??
Secondary succession occurs in ecosystems withou soil
A letter to my friend on how I celebrated my birthday last month in french (to be written in the verb tense of futur simple)
In which type of economy does the government decide all or most economic questions?
Type the correct answer in the box. Spell all words correctly.Which section of a business plan gives details about a business’s core products and services? plea
how many digits does Quintillion have in it
Which of these sentences is written correctly? A) When someone wants to organize his closet, they can find many great space-saving products on infomercials. B)
5. When did Russia stop allowing Western literature to be sold in the Soviet zone?
HCl can be produced by the exothermic reaction H2(g)+2ICl(g)→2HCl(g)+I2(g) . A proposed mechanism for the reaction has two elementary steps as shown below. St