vegetap591
vegetap591 vegetap591
  • 20-07-2021
  • Mathematics
contestada

Use elimination to solve the system 4x + 7y = –14 and 8x + 5y = 8 for x. Round to the nearest tenth.

Respuesta :

moranf611
moranf611 moranf611
  • 20-07-2021

Answer:

x = 3.5

y = - 4

Step-by-step explanation:

2(4x + 7y = -14)

8x + 14y = -28

  8x + 5y = 8

- (8x + 14y = -28)

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

        - 9y = 36

            y = 36/-9

            y = - 4

   4x + 7y = - 14

4x + 7(- 4) = - 14

     4x -28 = - 14

            4x = 14

              x = 14/4

              x = 3.5

Answer Link

Otras preguntas

subract 6a-4b+3c from the difference between 14a+3b-6c and 7a-2b-10c​
how would grasshoppers be affected by chytrid fungus
HELP RIGHT NOWWWWWWWW PLEASEEE
Convert .0590 in/ms to km/hr
Pls quickly! Jaxon has two job offers. Both jobs have a starting bonus and a constant monthly salary. • Job A: The starting bonus is $500, and the salary is $3,
I need help Which is greater: the mass of one mole of carbon, or the mass of one mole of iron? Probably obvious but I’m tired
PLEASE, I NEED HELP! Find the equation of the line that is perpendicular to the given line and passes through the given point. y = − 1/5x − 5; (11, 0)
WHAT IS THE VOLUME? PLEASE HELP ME ASAP!!!!!
The temperature of 500 mL of water is 16°C what happens to the water when thermal energy is transferred to it
what does it mean by clogged????