School787
School787 School787
  • 16-10-2017
  • Mathematics
contestada

Solve this system of linear equations. -14x + 11y = 23 7x - 3y = 37
x=? y=?

Respuesta :

Catya
Catya Catya
  • 16-10-2017
 -14x + 11y = 23
+2(7x - 3y = 37)
----------------------
   0 + 5y = 97
y  = 97/5
y = 19.4

7x - 3(19.4) = 37
7x - 58.2 = 37
7x = 37 + 58.2
7x = 95.2
x = 95.2/7
x = 13.6

Check

-14(13.6) + 11(19.4) = 23
-190.4 + 213.4 = 23
Answer Link

Otras preguntas

how does you and your family benefit from the US Constitution?
How did French goals in Americas differ from the goals of the other European nations?
The Dutch East India Company, the British East India Company, and the Virginia Company were
Which of the following contributed to European dominance in the nineteenth and twentieth centuries? European governments found ways to pay for expensive wars a
What is. The value of the underlined digit ? Write the number 49
In a controlled experiment, why must all of the variables, except one, be kept constant throughout the experiment
what is 10.4 in a mixed number in simplest form
Solve for k. 4 - 2k = -5(k + 7)
Simplify the following expression: 2x − 4y + 3x2 + 7y − 16x. 3x2 − 14x − 3y 3x2 + 14x + 3y 3x2 − 18x + 3y 3x2 − 14x + 3y
How long does it take the earth to complete one orbit arond the sun