Seudónimo
Seudónimo
02-12-2016
Mathematics
contestada
solve system by elimination
9x-3y=3
3x+8y=-17
Respuesta :
apologiabiology
apologiabiology
02-12-2016
multiply 2nd equation by -3 and add to first
9x-3y=3
-9x-24y=51+
0x-27y=54
-27y=54
divide both sides by -27
y=-2
sub back
3x+8y=-17
3x+8(-2)=-17
3x-16=-17
add 16 to both sides
3x=-1
divide 3
x=-1/3
(x,y)
(-1/3,-2)
Answer Link
VER TODAS LAS RESPUESTAS ( 19+ )
Otras preguntas
Jelpppsldkdhjdisjsjxjxjzjdjz
Write the products and balance the equation: C4H7OH + O2 → CO2 +H2O
5x-5=7x+1 solve this
Gabriel pays $37.80 for a ticket to a show. The amount includes an 8% sales tax. What is the price of the ticket without sales tax? Show your work.
Find an equation for the line that passes through the points (2,-5) and (-6,5)
HELPPPO ME ON SPANISH.... ILY THANK YOUU
A solenoid that is 66.2 cm long has a cross-sectional area of 18.0 cm2. There are 1300 turns of wire carrying a current of 8.15 A. (a) Calculate the energy dens
Find the volume of the right cone. Shown as a decimal rounded to the nearest tenth 26 and 18
i need help with number 4
why did the oil industry experience hard times from 1985 to 2004