fuzzyaaron
fuzzyaaron
03-05-2017
Mathematics
contestada
This is all I know what to do any help?
Respuesta :
choco4
choco4
03-05-2017
you can multiply the second equation by -2
-5x + y = 15 everything by -2
10x - 2y = -30
now you can solve them
2x + 2y = -6
10x - 2y = -30
y cancels
2x= -6
10x = -30
12x = -36
/12. /12
x = -3
now to solve for y you substitute x for -3
-5(-3) + y = 15
15 + y = 15
-15 -15
y= 0
Answer Link
VER TODAS LAS RESPUESTAS ( 19+ )
Otras preguntas
Which was not a provision of the Northwest Ordinance? A. a law against slavery in the territory B. requirements for public schooling in the new territories C. a
2 (-20)+3 [5/4 (-20)]+5 [2/5 (50]+4 (50)
Who is credited with writing an anonymous article about the Soviet expansion plans that was influential in the creation of the Truman Doctrine? Churchill Marsha
tienes un Gato o un perro
Mr. Morgan has five daughters. They were all born the number of years apart as the youngest daughter is old. The oldest daughter is 8 years older than the youn
what signs of greatness did lincoln exhibit in his life?????
Which could be the measures of the three angles of an acute triangle. A. 40, 90, 50 B. 45, 45, 90 C. 25, 25, 130 D. 70, 80, 30
NEED HELP! worth 10 points:) a house painting company charges $376 plus $12 per hour .Another painting company charges $280 plus $15 per hour. (a)how long is a
Please name any animal stall u can think of ( please may I have more than one please!!!) =-)
The 'divide and rule' policy employed by the English was developed by the _____.
