robert122894 robert122894
  • 03-11-2019
  • Mathematics
contestada

Solve the system using the addition method. State your solution as an ordered pair.

3x+2y=56
9x-2y=4

Respuesta :

altavistard
altavistard altavistard
  • 15-02-2021

Answer:

The solution as an ordered pair is (-11/9, -15/2)

Step-by-step explanation:

Multiply the first equation by -3.  The resulting system is then

-9x - 6y = 56

9x - 2y = 4

--------------------

 -8y = 60, or y = -7.5.  From the second equation and this result y = -7.5, we know that 9x - 2(-7.5) = 4, or 9x = -15 + 4, or 9x = -11.  Then x = -11/9.  The solution as an ordered pair is (-11/9, -15/2).

Answer Link

Otras preguntas

which pathogen by being the smallest is able to spread and infect the greatest number of hosts
Your program should include the following four functions: check_length - This function should accept a password to evaluate as a parameter and should return a s
What is the percent of change from 60 to 84? 40% increase
6(y+1.5)=18 what does y equals?
write the product using exponents (−6)⋅(−6)
In what direction does erosion always occur? a. Downhill b. Uphill C. South d. West
Violet Flowergarden- What is 2 x 2?
3) How manycolognes may be packed in a carton measuring 72 cm by 45 cm by 36 cm?​
Based on the point and evidence, which is the best explanation, or analysis, of the evidence? The Maori myth shows people working together to achieve a goal. Th
How many solutions are there to the equation below? 5x - 2 - 3x(1 + 2) = 2(2 + 3) A. O B. infinitely many C. 1