jass0111 jass0111
  • 23-07-2018
  • Mathematics
contestada

solve using substitution technique; -3x+y=2, 12x-4y=-8

Respuesta :

altavistard
altavistard altavistard
  • 23-07-2018

The first equation is easier to solve for y than is the 2nd: y = 3x+2. Subst. 3x+2 for y in the second equation:


12x - 4(3x+2) = -8

Expanding, 12x =12x -8 = -8


This is always true, no matter the value of x. Thus, the solution set is "all real numbers."

Answer Link

Otras preguntas

What are the chemical and physical properties of water?
What are five areas in which god's persevering faithfulness may be seen?
A high school student took two college entrance exams and scored 1120 on the sat and 27 on the act. suppose that sat scores have a mean of 950 and a standard de
set of books that are 1.5 inches wide are being organized on a bookshelf that is 36 inches wide. how many books can fit on the shelf! write multiplication equat
Which of the following is another name for space science?
Ballot initiatives and referenda in the united states are examples of what kind of democracy?
HELLO PLEASE ANSWER MY QUESTION
What is the focus of the hazard analysis and countermeasures function of the army safety program?
What is a description of the central nervous system?
how long will it take you to drive 175 miles at a speed of 25 miles per hour