dandiesgod dandiesgod
  • 23-03-2021
  • Mathematics
contestada

Solve the system of equations x + y = 4 and -9x + 7y = -84 by combining the
equations.

Respuesta :

fnej
fnej fnej
  • 23-03-2021

Answer:

x = 7

y = -3

Step-by-step explanation:

x + y = 4                 (Multiply this by 9)

-9x + 7y = -84

9x + 9y = 36

-9x + 7y = -84

16y = -48

y = -3

x + y = 4  

x - 3 = 4

x = 7

Answer Link

Otras preguntas

Which physical properties can be used to identify an unknown substance? Choose all answers that are correct. a. boiling point b. length c. density d. volume
what was the negative impact of the steel plow on society
right two equal fractions 2/3
Choose the appropriate pronoun. Steve made friends _____ later worked with him. which who
If something is new or unusual, most people’s first instinct will be to ______. a. Accept it b. Try it c. Reject it d. Celebrate it
what is the monumento al divine salvador del mundo?
explain how the concentration of hydronium ions and hydroxide ions are related to ph
Ralph can drive of the way to work on 1/16 of a tank of gas. At this rate, how much has does Ralph use to get to work and back?
Factor the sum of terms as a product of the gcf and a sum 24a + 36
Why did the nazi government try to win the loyalty of young Germans