emmass15
emmass15 emmass15
  • 02-03-2021
  • Mathematics
contestada

1. What is the solution of the system
{3x - y = 14
{4x + y = 21 ?
A (−5, 3)
B (4, −2)
C (5, 1)

Respuesta :

surjithayer10otahza surjithayer10otahza
  • 02-03-2021

Answer:

C

Step-by-step explanation:

3x-y=14

4x+y=21

add

7x=35

x=35/7=5

4×5+y=21

y=21-20=1

so (5,1 ) is the solution.

Answer Link

Otras preguntas

A vaccine a. can be harmful because it contains pathogens such as viruses. b. contains a changed pathogen, so the pathogen is no longer harmful. c. provokes a r
If a car can go from 0.0 to 60.0 mi/hr in 8.0 seconds, what would be its final speed after 5.0 seconds if its starting speed were 50.0 mi/hr?
If a car can go from 0.0 to 60.0 mi/hr in 8.0 seconds, what would be its final speed after 5.0 seconds if its starting speed were 50.0 mi/hr?
why was Richard Arkwright important in the industrial revolution?
How do you factor k^2-k-56
Waves that move matter back and forth are called                 a.transverse waves  b.longitudinal wave     c. Medium wave
All of the following are true about the Stamp Act EXCEPT (A) the act directly affected all colonists (B) as a result of colonial resistance to the Stamp Act, al
A vaccine a. can be harmful because it contains pathogens such as viruses. b. contains a changed pathogen, so the pathogen is no longer harmful. c. provokes a r
Waves that move matter back and forth are called                 a.transverse waves  b.longitudinal wave     c. Medium wave
How do you factor k^2-k-56