daysha141
daysha141
17-09-2016
Mathematics
contestada
how to solve for x: 2x+y=3 and x+y=9
Respuesta :
Аноним
Аноним
17-09-2016
The answer for the first one would be: y=3-2x
The answer for the second one would be: y=9-x
Answer Link
kokodoggie
kokodoggie
17-09-2016
X+Y=9; X=9-Y; 2X+Y=3; substitute above equation for X; 2(9-Y)+Y=3; 18-2Y+Y=3; 18-Y=3; 18=3+Y; 15=Y; X+Y=9; X+15=9; X= -6; 2X+Y=3; 2(-6)+15=3; -12 + 15 = 3; 3 = 3;
Answer Link
VER TODAS LAS RESPUESTAS ( 54+ )
Otras preguntas
Express the number using scientific notation: 57,000,000 HELP PLZ!!!
Is 5sintheta= -2 possible? Explain your reasoning
Who were troubadours? What was their music like?
Sort the following hypothetical discoveries into the appropriate bins as follows:consistent with theory: the statement describes a discovery that we could reaso
Triangle XYZ is a right triangle. Angle Z is a right angle and m∠X = 68°. What is m∠Y?
What is the inverse of the function f(x) = 2x – 10?
A company's normal selling price for its product is $20 per unit. however, due to market competition, the selling price has fallen to $15 per unit. this company
A male client is prescribed potassium-sparing diuretics to treat his disease process. during his annual visit to the physician, he reports that he is experienci
Where are electrons in an atom located? moving outside the nucleus inside the nucleus attached to neutrons
What is the equation of the line that passes through (4, -1) and (-2, 3)?
