Seudónimo Seudónimo
  • 21-11-2019
  • Mathematics
contestada

Solve.


{4x+y=53
{x+y=3

Use the linear combination method.




(−3, 7)


(2, −3)


(0, 5)


(0, −3)

Respuesta :

sqdancefan
sqdancefan sqdancefan
  • 22-11-2019

Answer:

  (2, -3)

Step-by-step explanation:

Apparently, the equations are supposed to be ...

  • 4x +y = 5
  • 3x +y = 3

The solution for x can be found by subtracting the second equation from the first:

  (4x +y) -(3x +y) = (5) -(3)

  x = 2 . . . . . . . matches the second answer choice

Y can be found from either equation:

  y = 5 - 4x . . . . . subtract 4x from the first equation

  y = 5 -4(2) = -3

The solution is (x, y) = (2, -3).

Answer Link

Otras preguntas

describe and correct the error in solving this equation -2(7-y)+4=-4 -14-2y+4=-4 -10-2y=-4 -2y=6 y=-3 please show work I don't know how to get the answer
what is the idiom of to start something
What is the most likely reason that a dictator would run in a rigged election
what are the two whole numbers that are closest to 200 ?
Write a word phrase for each algebraic expression 13p+0.1
frank needs to fill juice cups for his little sisters party..there are 35 juice cups and each juice cup holds 12 fluid ounces . the juices comes in 1 gallon bot
Find the prime factorization of 15
Explain how you can use place-value patterns to describe how 50 and 5,000 compare.
Consider a bathtub filled with water, with a plug in the drain. How long would this be considered a closed system?  A. a few seconds   B. 2 hours   C. 10 h
758 round to the nearsest hundred