nikki8133
nikki8133 nikki8133
  • 04-12-2019
  • Mathematics
contestada

Solve the system using elimination.
3x + 5y = 55
5x + 4y = 57

Respuesta :

Yang100
Yang100 Yang100
  • 04-12-2019

Answer:

x=5, y=8. (5, 8).

Step-by-step explanation:

3x+5y=55

5x+4y=57

---------------

5(3x+5y)=5(55)

-3(5x+4y)=-3(57)

-------------------------

15x+25y=275

-15x-12y=-171

---------------------

13y=104

y=104/13

y=8

3x+5(8)=55

3x+40=55

3x=55-40

3x=15

x=15/3

x=5

Answer Link

Otras preguntas

What features of the Chinese form of government did the mongols adopt?
How do you think the people conquered by the Romans felt about their new rulers
In scienceclass the teacher measured 800 milligramns of an chemical.How manyn grams is it.
a rectangular field with a area of 8000m2 is enclosed by 400m of fencing. determine dimensions to nearest tenth of a metre
Maria exercises for 2 1/7 hours every Saturday. She runs for 1/3 of the time that she exercises. How much time does she spend running every Saturday?
Which of the following stages of the cell cycle occurs immediately prior to mitosis? (A) G1 (B) G2 (C) S (D) M (E) cytokinesis Can you please explain with some
Why was capturing egypt's suez canal so important to the axis powers?
What does compris mean in French ???
If (x − 2)^2=49, then x could be ?
What does compris mean in French ???