JeremiahO
JeremiahO JeremiahO
  • 21-07-2017
  • Mathematics
contestada

2x+3y=-5
3x-5y=21

The value of y that satisfies the system of the equations above is
A) 2
B)7
C) -3
D)There is no solution

Respuesta :

scarletblades101
scarletblades101 scarletblades101
  • 21-07-2017
You have to find a way to eliminate either x and y. We'll eliminate x:

2x + 3y = -5
3x - 5y = 21

2x*3 + 3y*3 = -5*3
3x*-2 + -5y*-2 = 21*-2

6x + 9y = -15
-6x + 10y = -42

19y = -57

y = -3
Answer Link

Otras preguntas

The passage above from Article 1, Section 7 of the U.S. Constitution reflects the principle of
The passage above from Article 1, Section 7 of the U.S. Constitution reflects the principle of
Qu est ce qu un conte implicitr
Who were the two presidents that were five star generals?
Jason pays a $100 installation fee and a $40 monthly service charge for his telephone. Which equation shows the amount that Jason pays for x months of telephone
An older woman is gardening in the direct sun for three hours without any rest. She suddenly feels weak and dizzy before she faints. She is taken to an emergenc
Complicated means in bangla
In which passage is it clearest that the author is using diction to achieve some kind of effect? A. The teacher stood at the door smiling brightly and welcom
Complicated means in bangla
What does v. P=mv mean can someone help