victoriagreeneov7l9o
victoriagreeneov7l9o victoriagreeneov7l9o
  • 30-07-2019
  • Mathematics
contestada

Solve the system of equations given by 5x - 2y = -6 and 15x - 6y = 6

A. Infinitely many solutions
B. (1, 1)
C. No solution
D. ( -2, -2)

Respuesta :

wyattwarmack25 wyattwarmack25
  • 30-07-2019

Answer:

8x - 3y = 12 _______( 1 )

5x = 2y + 7 _______( 2 )

On further solving ( 2 ), we get

5x - 2y = 7 _______( 3 )

Multiply ( 1 ) by 2

16x - 6y = 24 _______( 4 )

Multiply ( 3 ) by 3

15x - 6y = 21 _________( 5 )

Subtract ( 4 ) and ( 5 )

( 16x - 6y ) - ( 15x - 6y ) = 24 - 21

16x - 6y - 15x + 6y = 3

Put this in ( 2 )

5 ( 3 ) = 2y + 7

15 = 2y + 7

2y = 15 - 7

2y = 8

y = 8 / 2

Step-by-step explanation:

Answer Link

Otras preguntas

According to Geert Hofstede, a Danish psychologist and anthropologist, deep culture is:
factor the following polynomial 2x^2+9x+9
Which of the following is an example of Sanitizing ? A. Scraping food particles From dirty dishes into a g
Unlike personnel in market-oriented firms, personnel in sales-oriented firms:
what is 2/3 divided by 5/6
h/6−1=−3 what is h? plz help
Is it possible for a triangle to have sides with the given lengths? Explain. 5 in., 8 in., 15 in.
explain the concept of "natural selection" using your moths as an example
Which of the following is a function of the cell membrane? Producing energy Creating new cells Eliminating of waste Replacing damaged cells
What privacy issues have arisen with webcams in mobile devices?