04-06-2018
Mathematics

contestada

slove the system of equations 3x-7y=5 and 9y=5x+5

Respuesta :

jinc0930 jinc0930

04-06-2018

3x-7y=5

9y=5x+5
-5x+9y=5

3x-7y=-5x+9y
8x=16y
x=16y/8
x=2y

3(2y)-7y=5
-1y=5
y=-5

-5(9)=5x+5
-45-5=5x
x=-10

Answer Link

Otras preguntas

Which tense shows progression or continuation of actions or states of being?

All of the following are Command Staff positions, EXCEPT FOR: a. Liaison Officer. b. HazMat Officer. c. Safety Officer. d. Public Information Officer.

Julia works at a music store. One of her jobs is to stock new CDs on the shelf. A recent order arrived with 215 classical CDs, 125 jazz CDs, and 330 soft rock

Where the Andes is located? a. North America c. América Central b. South America d. North America

What landform was crossed by American colonists when they headed west? Appalachian Mountains Bering Strait Laurentian Mountains Sierra Madres

Where are people's lives more likely to be affected by earthquakes? Iraq Israel Lebanon Turkey

Imagine you are living in 1898, and read the headline about the “Little Big Horn.” How might that headline have influenced your opinion, or view, of the Indian

Evie and her father are comparing their ages. At the current time, Evie's father is 36 years older than her. Theee years from now, Evie's father will be five ti

Interjections are used most commonly in

Who was head of the Final Solution? a. Himmler c. Roosevelt b. Hitler d. Churchil