sarahlamar382
sarahlamar382
03-12-2014
Mathematics
contestada
3x+4y=2 4x-4y=12 by using elimination
Respuesta :
lakwan007
lakwan007
03-12-2014
(+3x+4y=2)
(+4x-4y=12)
-----------------
7x = 14
-----------------
7
X=2
3(2)+4y=2
6+4y=2
4y=-4
Y=-1.
Or you can plug x into the other equation.
4(2)-4y=12
8-4y=12
-4y=4
Y=-1.
Answer Link
VER TODAS LAS RESPUESTAS ( 32+ )
Otras preguntas
Explain how a paleontologist might use relative dating techniques to determine the age of a fossil.
A budget is an excellent way to manage the money you earn. true false
Veto power is the power to defeat a measure with a single vote. true or false.
Lisa wrote the following statement: "You can only draw one unique isosceles triangle that contains an angle of 65°." Which statement is true? Lisa is incorrect
how could the following sentence be rewritten as an interrogative sentence? we will be there by seven o’clock. we will be there! you will be there by seven o’cl
Kim is showing her steps to solve the expression −18.9 ÷ 1/4 . answer?? In which step did Kim make an error? Step 1: −18.9 ÷ Step 2: −18.9 ⋅ 4 Step 3: 75.6 A: S
Dennis is going to be talking to his boss about wanting a raise. the purpose of his communication is to ______. a. inform his boss b. persuade his boss c. an
16×16×16 equivalent to?
Solubility refers to the ability of a substance to dissolve in a solution. please select the best answer from the choices provided t f
Samples of size n = 600 are taken from a telephone survey, and the mean age is taken for each sample. What is the distribution of the sample means? A. skewed t
