anrensland16
anrensland16 anrensland16
  • 12-05-2020
  • Mathematics
contestada

What is the solution to the system of equations?
y=-3x - 2
5x + 2y = 15
(40, 19)
• (-19,55)
(19,-40)
(55, -19)

Respuesta :

chudung1976
chudung1976 chudung1976
  • 12-05-2020

Answer:

( -19,55)

Step-by-step explanation:

y=-3x - 2

5x + 2y = 15

+ First, we replace y = -3x -2 into 5x + 2y =15

and we have 5x + 2( -3x -2) =15

or 5x - 6x - 4 =15

or -x -4 =15

and -x -4 +4 = 15 +4

finally -x = 19, or x= -19.

Replace x = -19 into y = -3x -2 = -3*(-19) -2 = 57 -2 =55

The solution is (x, y) or ( -19, 55), we choose b)

Have a good day.

Answer Link

Otras preguntas

Discuss the factors that cause or influence teenagers to engage in each of these types of risk behavior ​
phương pháp cố định mẫu
Underground mining removes minerals from deep in the earth. Miners use blasting to separate the "waste" from the mineral deposit. Which statement best describes
Simplify addition radical expression √36+√64
ption is given of how each pri least three public sector contexts. Mark Activity 10 21 Questions Description Discuss of at least 2 examples of the successful im
Plss help number is 21952 and 115248
Which of the following is evidence of a secure attachment in children
¿Que elementos del legado cultural clásico se han relacionado cotidianamente? ¿De qué forma lo han hecho?
Which of the following is an example of adaptive radiation?
A table is on sale for $179.20, which is 72% less than the regular price. What is the regular price?​