egertonblaze
egertonblaze egertonblaze
  • 04-08-2017
  • Mathematics
contestada

4x - 3y = 17 5x + 4y = 60 x = 2, y = -3 x = 5, y = 8 x = 8, y = 5 x = -8, y = -5

Respuesta :

texaschic101
texaschic101 texaschic101
  • 04-08-2017
4x - 3y = 17.....multiply by 4
5x + 4y = 60 ...multiply by 3
-----------------
16x - 12y = 68 (result of multiplying by 4
15x + 12y = 180 (result of multiplying by 3
-----------------add
31x = 248
x = 248/31
x = 8

4x - 3y = 17
4(8) - 3y = 17
32 - 3y = 17
-3y = 17 - 32
-3y = - 15
y = -15/-3
y = 5

solution is (8,5) <==
Answer Link

Otras preguntas

Barnaby feels lost in his academic life. his major is tough, and although he wants to continue, he's not sure he has what it takes. what should he do?
Who were members of the new middle class? merchants, knights, and bakers shopkeepers, clergy, and merchants tradesmen, merchants, and shopkeepers tradesmen, mon
Sarah and Rico both collect rocks. If Sarah has three times as many rocks as Rico, and she has 84 rocks, how many rocks does Rico have?
Which sentences contain two words that are related in the same way as the underlined words in the paragraph? The groundskeepers keep the grass on the football f
PLEASE ANSWER How does American culture change over time? Describe things the United States has that we got from other countries.
What did Christianity teach about the placement of the Earth
What is personal finance
Which phrase completes this sentence?
Hormones involved in sexual interest and in the changes of puberty include all of these except:
What are effective strategies for developing complex essay topics