samuel741
samuel741
22-02-2017
Mathematics
contestada
need help
9x + 7y = 10
7x + 7y = 14
Respuesta :
charlottekrist
charlottekrist
22-02-2017
1. Solve for x in 9x+7y=10
X=(10-7y)/(9)
2. Substitute than into 7x+7y=14
7(10-7y)/9+7y=14
3. Solve for y in 7(10-7y)/9+7y=14
Y=4
4. Substitute y into x=(10-7y)/9
X=-2
5. The answers
X=-2
Y=4
Have a wonderful day, I hope it helped
Answer Link
VER TODAS LAS RESPUESTAS ( 39+ )
Otras preguntas
Can someone help me with this? Please and Thank You.
Read the article "Overcoming Difficulties: How Helen Keller Learned to Communicate" and answer the question. Every day, millions of people worldwide use their m
What is the equation of this line in standard form? A: 9x−8y=23 B: 8x−9y=23 C: 8x−9y=−23 D: 8x−7y=−25
How does social norms affect social relationship?
Match the term in column 1 with the definition in column 2 Blended family ? Multiple generations and members related by both blood and marriage Multigenerationa
how might transportation be a barrier to someone with mobility issues
X At a store, toothbrushes cost x dollars and bars of soap cost y dollars. One customer bought 2 toothbrushes and 1 bar of soap for $11. Another customer bought
Bonjour quelqu'un peut m'aider a écrire une lettre de rupture? OK - je dois écrire une lettre de rupture en repondant a la lettre qui ma envoyer ce garcon et qu
Gerard is calculating the area of a composite figure. The figure is made up of a square with side lengths of 6 centimeters (cm) and a triangle with a base of 6
Compare and contrast the African and native American experience during 1800's here in the US
