Ash0405
Ash0405
02-02-2015
Mathematics
contestada
Solve by substitution
X+3y=1 and -3x-3y=-15
Respuesta :
Аноним
Аноним
02-02-2015
[tex]x+3y=1\\ -3x-3y=-15\\ add\quad the\quad equ.\\ (x+3y)+(-3x-3y)=1-15\\ x-3x+3y-3y=-14\\ -2x=-14\\ x=\frac { -14 }{ -2 } \\ x=7\\ Let's\quad rewrite\quad the\quad equ.\\ 7+3y=1\\ 3y=1-7\\ 3y=-6\\ y=\frac { -6 }{ 3 } \\ y=-2[/tex]
Answer Link
VER TODAS LAS RESPUESTAS ( 18+ )
Otras preguntas
Changing the content of a Web site with the intent of leaving a distinguishing mark or changing its appearance is __________. A. Web site defacement B. cross-si
What is the most effective way to demonstrate being prepared for an interview? A) Ask to speak to people at the company whom you have met with before. B) Send
The loose fitting sac around the heart is called ________
Balance the following ionic equation for a redox reaction, using whole number coefficients. MnO−4(aq)+SO2−3(aq)+H3O+(aq)⟶Mn2+(aq)+SO2−4(aq)+H2O(l)
Sue found a coupon for $2.00 off of Post's Raisin Bran breakfast cereal in her favorite magazine. Which type of coupon is this?
The low temperatures in two cities are being compared. In City 1, the range in temperature is 20°F and the IQR is 7°F. In City 2, the range in temperature is 15
________ skids occur when the brakes are applied so hard that the front or rear wheels lost traction. Cornering
A major component of gasoline is octane . When octane is burned in air, it chemically reacts with oxygen gas to produce carbon dioxide and water . What mass of
Are rational numbers equal to integers
A cannon fires a cannonball 500.0 m downrange when set at a 45.0o angle. At what velocity does the cannonball leave the cannon?
