ej4
ej4
18-02-2015
Mathematics
contestada
4x+y=23
3x-y=12 how to do do this
Respuesta :
luana
luana
18-02-2015
[tex] \left \{ {{4x+y=23} \atop {3x-y=12}} \right. \\+---\\add\ both\ equations\\\\ 7x=35\ \ \ | divide\ by \ 7\\\\ x=5\\\\ y=23-4x=23-4*5=23-20=3[/tex]
Answer Link
VER TODAS LAS RESPUESTAS ( 17+ )
Otras preguntas
Which event is most likely to cause a widespread influenza outbreak? Answers A.the northern portion of the country is affected by winter-like weather patterns
the renaissance started in italy in the 1300s because the black plague and feudalism had not been as prevalent in the italian city-states. true or false?
What is the chemical name of the compound cu2co3? copper (i) carbonate copper (ii) carbonate copper (iii) carbonate (ii) copper (iii) carbonate copper carbonate
What was the main benefit of scientific management
Marcos is doing a card trick using a standard 52-card deck with four suits: hearts, diamonds, spades, and clubs. He shows his friend a card, replaces it, and th
In an allusion, the importance lies in what a word a- represents b- rhymes with c- sounds like d- states
Tanks of compressed gas must be kept away from heat sources. If the temperature of the tank increases too much, it may explode and cause a great deal of damage.
Which media format combines sight, sound, and motion to engage and inform the audience? Audio Static multimedia Text Video
In a bag of marbles you have three green, two yellow, six blue, and nine red marbles. What is the probability of picking a red marble from the bag?
A block with mass m1 = 8.8 kg is on an incline with an angle θ = 41.0° with respect to the horizontal. For the first question there is no friction, but for the
