tcuff2002 tcuff2002
  • 26-01-2017
  • Mathematics
contestada

5x+y=27 y=4x using substitution method

Respuesta :

LukesTuke
LukesTuke LukesTuke
  • 26-01-2017
 5x + y = 27
substitute: 5x + 4x = 27
combine: 9x = 27
divide (by 9): x = 3
Answer Link
Apocrophon
Apocrophon Apocrophon
  • 26-01-2017
Substitute 4x for y, and solve for x;
5x + (4x) = 27
9x = 27
x = 3
Substitute 3 in for x in the first equation and solve for y;
5(3) + y = 27
15 + y = 27
y = 12
Answer Link

Otras preguntas

how to solve 2 5/2-2 3/2
What was one way the Renaissance changed society?
what is the name given to cell division in eukaryotes
Karina and _____ are working together to build a model. a. Her b. Me c. She d. Us
what was the first act that the parliament passed in an attempt to raise revenue by taxing the American colonists
In Chemistry class, Andrew has earned scores of 64, 69, and 73 on three tests. He must maintain an average of 70 to pass the course. What score must Andrew earn
What would happen to a cell if the cell membrane was replaced by a plastic covering that prevented molecules from entering or leaving the cell?
Which personal pronoun correctly completes the sentence? What is its use? Because so many leaves had fallen, their parents helped .................. rake the ya
Which sentence does not contain any errors in the use of italics or quotation marks? a. Is the word "their" or the word "there" correct in that sentence? b. The
Takamori saigo beliefs