Booseckgrewski Booseckgrewski
  • 24-11-2016
  • Mathematics
contestada

which ordered pair is a solution to the system?
{x+4y=19
{y=-2x-4

a) (-5, 6)
b) (-2, 0)
c) (3, 4)
d) (7,3)

Respuesta :

bcalle
bcalle bcalle
  • 26-11-2016
The solution is A. (-5,6)
Answer Link
HomertheGenius
HomertheGenius HomertheGenius
  • 26-11-2016
x + 4 y = 19
y = - 2 x - 4
------------------
x + 4 * ( - 2 x - 4 ) = 19
x - 8 x - 16 = 19
- 7 x = 29 + 16
- 7 x = 35
x = 35 : ( - 7 ) 
x = - 5
y = 10 - 4
y = 6
Answer:
A ) ( - 5 , 6 )
  
Answer Link

Otras preguntas

I’m confused please help and thanks
i need help with this problem 7×/10-3=3×/4
Complete the sentence by choosing the correct past tense conjugation. Tu le ______ una carta a tu hermano? A.) escribimos B.) escribio C.) escribieron D.) escri
Work out the value of xy+y when x=-3 and y=2
Help please!!!! Question 1 Unsaved Conserving the quality of available water is a high priority world-wide. There are many countries where the water supply is
What is an event that is not really about the holiday that is traditionally held on Memorial Day?
what does freedom mean to all people??
Round 35.78 and 39.51
how do you solve6(-3)-5+7)÷-64+4
Please Help! Check the following problem for errors. If you find an error, identify it, tell why it is an error and correct the error solving the problem correc