casandraserrat8853 casandraserrat8853

14-01-2019
Mathematics

contestada

Eighth grade AA.8 Solve a system of equations using substitution clouds Solve using substitution. 4x + 7y = 9 y = 3 ( , ) Submit

Respuesta :

tramserran tramserran

14-01-2019

Answer: (-3, 3)

Step-by-step explanation:

4x + 7y = 9

y = 3

Replace "y" with "3" in the first equation to solve for x:

4x + 7(3) = 9

4x + 21 = 9

4x = -12 subtracted 21 from both sides

x = -3 divided both sides by 4

Answer Link

Otras preguntas

Carrie has been instructed by her counselor to spend 10 minutes on her way to work every morning mentally repeating the word "calm" to herself. carrie is practi

Which equation is true for any value of y? A : 4y to the 2nd power + 2 + (4y X 4y) + 2 B: 4y to the 2nd power + 2 + (4y + y) +2 C: 4y to the 2nd power + 2 = 4(y

Alcohol will make it easy for you to feel as if you're __________ when you're not.

HELPPPPPPP ME PLEASE!!!!!

How many parts make up the capture tag as part of the detainee search for weapons and contraband?

Let's start with a city that has played a huge part in the shaping of the continent we call Europe today. What city is this?

Explain why it is necessary to incorporate buffers into media in whcih micororagnisms are grown

A student who needs support only occasionally would relate to which level of intellectual disability?

Since the beginning of the 1900s, the agricultural sector of the united states has:

Volume of a Cylinder