mckatiepaigeovubjs
mckatiepaigeovubjs mckatiepaigeovubjs
  • 13-10-2017
  • Mathematics
contestada

-4.5x-2y=-12.5 3.25x-y=-0.75
solve by elimination

Respuesta :

anthony12341
anthony12341 anthony12341
  • 13-10-2017
-4.5x-2y=-12.5 and 3.25x-y=-0.75
we first multiply the second equation by -2
(-2)*(3.25x-y=-0.75)=-6.5x+2y=-1.5
add the equation to eliminate the y
so yo get (-4.5x-6.5x)=(-12.5-1.5)
-11x=-11
x=1
now we plug in x into any equation to solve for y
-45x-2y=-12.5 and x=1
(-45*1)-2y=-12.5
-4.5-2y=-12.5
-2y=-12.5+4.5
-2y=-8
y=4
then your answer is x=1 and y=4
Answer Link

Otras preguntas

forests maintain a balance between the amount of ______ and ______ gases in the atmosphere​
Describe the process of bone formation and growth.
Can someone translate this English sentence into French "The ocean looks so beautiful as the moon sparkles upon it". Please help!
What are some ways that a person can influence the Public Opinion
if 10 were added to each of the vaules in a data set that originally had a standard deviation of 6 the standard deviation of the resulting data woud e 6
The distances by air from New York City to other cities are shown below. Tokyo: six thousand, seven hundred fifty-six miles San Francisco: two thousand, five hu
0.12y-1=0.095-0.9 help
IS THIS ANGLE ACUTE, RIGHT, OBTUSE , OR STRAIGHT?
What do you see in the mural painting by Juan O'Gorman?
No séquétediera in English