wfg3wzkbqx wfg3wzkbqx
  • 12-11-2020
  • Mathematics
contestada

Solve the system by the substitution method. 4x+3y=7 x=y+7

Respuesta :

lilstefy
lilstefy lilstefy
  • 13-11-2020

Answer:

y = -3 and x = 4

Step-by-step explanation:

4x + 3y = 7

x = y + 7

Since we know what x is equal, replace the x in the first equation with the second equation.

4x + 3y = 7

4(y + 7) + 3y = 7

4y + 28 + 3y = 7

7y + 28 = 7

7y = 7 - 28

7y = -21

y = -3

Now that we know y, you can use the same process to find x.

x = y + 7

x = (-3) + 7

x = 4

Answer Link

Otras preguntas

Describe internal factors of decision making.
The ratio of a quarterback's completed passes to attempted passes is 6 to 7. If he attempted 21 passes, find how many passes he completed.
(Please check) Find the value of x in the triangle 84 87 ** 93 115
Leilani dropped an acorn from her tree house. It took 1.1 seconds to hit the ground below. Find the height in feet from which she dropped the acorn.
For a safe training routine, you should choose weights that you can lift _____ - _____ times without injury.
Please help, I have an F in this class Write an informative essay that explains how the presence of Burmese pythons is changing the Everglades. -Must be at lea
how does the period cycle work?
damian has evaluated his skills and determined that he has excellent agility he wants to sign up for two sports that will play to his strength. which two sports
Brad's statement shows a previous balance of $2592.35, a payment of $75, and new transactions totaling $432. His APR is 18.6%. What is his new balance?
What is the difference between an armistice and treaty