sarahlamar382
sarahlamar382
03-12-2014
Mathematics
contestada
3x+4y=2 4x-4y=12 elimination
Respuesta :
Wenqian
Wenqian
03-12-2014
3x+4y=2
+ 4x-4y=12 add them since 4y and -4y can cancel out
7x=14 divide each side by 7
x=2
3x+4y=2 x=2
3(2)+4y=2 substitute
6+4y=2
-6 -6
4y=-4 divide each side by 4
y=-1
Answer Link
ritz
ritz
03-12-2014
3x+4y=2
4x-4y=12
Add both
7x=14
X=2
Substitute value of x in first equation
Y=-1
Answer Link
VER TODAS LAS RESPUESTAS ( 81+ )
Otras preguntas
1.08 to the 3rd power?
b) An earthed conductor was brought near the charged student. A spark jumped between the conductor and the student. The potential difference between the conduct
-15p+32p please awnser its rsm hw
The width, of a rectangle is 1/2 of its length. What are the sides of the rectangle if its perimeter is 63 in
1.08 to the 3rd power?
how many molecules of oxygen is in water
A student graphed distance versus time for an object that moves 14m every 2 s. the speed of the object is
Suppose D(T) = A(T-H)2 +K represents the hieght of an object in feet after T seconds. Suppose an object has a maximum height of 12 feet after 2 seconds. This sa
The sum of 2.236 and 7.555.. must be : A) Rational B) Irrational C) An integer D) A whole number
= A coat is reduced $24 from the original price of $400. What is the percent decrease? The price of the coat decreased by%. K
