delayedfriday delayedfriday
  • 02-03-2016
  • Mathematics
contestada

Solve each system using substitution:
2x+2y=38
y=x+3

Respuesta :

hworonie hworonie
  • 02-03-2016
2x+2(x+3)=38
2x+2x+6=38
4x+6=38
4x=32
x=8

y=8+3
y=11
Answer Link
Exvited
Exvited Exvited
  • 02-03-2016
[tex]2x+2y=38 \\ y = x + 3 \\ \\ \\ 2x+ 2 (x + 3) = 38 \\ \\ 2x + 2(x + 3) \\ \\ 2x + 2x + 6 \\ \\ 4x + 6 \\ \\ 4x + 6 = 38 \\ \\ 4x + 6 - 6 = 38 - 6 \\ \\ 4x = 32 \\ \\ \frac{4x}{4} = \frac{32}{4} \\ \\ x = 8 \\ \\ y = 11 \\ \\ [/tex]

The final result is: x = 8 and y = 11.
Answer Link

Otras preguntas

8.74 rounded to the nearest whole number
A number cube is rolled two times in a row. find the probability it will land on 2 on the first roll and a number greater then 4 on the second roll
Based on the trends shown in this chart, which of the following predictions best tell about the U.S. population in 2020? (3 points) I. More than half of the U.S
Please help I’m super confused .....................
Stress generally occurs when someone? A.becomes overconfident B.disregards others C.feels overwhelmed
how do you do the foil method with polynomials?
In "combining perspectives," Scott describes scholars attempts to synthesize and reconcile the rational, natural, and open systems perspectives. the result is a
Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.
How many molecules are present in 3 mols of silicon dioxide (sio2)?
suppose a-b=0 what’s ab