Fernando3230 Fernando3230
  • 02-06-2018
  • Mathematics
contestada

Cuanto es (2x+2y=20) (-2x-6y=-52) con método de igualación y método de suma y resta

Respuesta :

vidalmari6p99qfk
vidalmari6p99qfk vidalmari6p99qfk
  • 02-06-2018

x =2       y =8

2x + 2y=20

2x=20-2y

x=10-y

Ahora len la otra ecuacion remplazamos x por (10-y)

-2(10-y)-6y=-52

-20+2y-6y=-52

2y-6y= -32 (-52+20= -32)

-4y=-32

-y=-8

y=8            x=10-y  x=2

2*2+2*8=20

4+16=20

-2*2-6*8= -52

-4-48= -52


Answer Link

Otras preguntas

As Chief Executive, a president must do which of the following? Select all that apply. attend cerermonial events like the Commemoration of D-Day in France ov
Why was the 3rd president a Republican?
Joel earns a commission of 5% on the audio equipment he sells , and the store keeps the rest . He sells a $750 amplifier. A. How much commission does Joel earn
Determine if the graphed function is linear or nonlinear. Select from the drop down menu to correctly complete the sentence. The graphed function is Linear or N
Name two places smooth muscles are found
Which of the following is the smallest value? 2.03 0.97 1.12 24 0.22
Compute the missing data in the table for the following exponential function f(x)=(3)^x
2. _________________________ Period of time, after the Civil War, when the South was required to undergo political, social, and economic change in order to ree
if the teacher has 30 students and 10% left,how much students does she have now
which is the better buy $10 for 2 pounds or $6 for 1 pound