Seudónimo Seudónimo
  • 22-02-2018
  • Mathematics
contestada

Use the elimination to solve this equation.

2x+3y=55
9x+4y=105

Respuesta :

hoottootriot
hoottootriot hoottootriot
  • 22-02-2018
x=5 y=15 (5,15). 
This is how you do it:
-4(2x+3y=55): -8x-12y=-220
3(9x+4y=105):27x+12y=315

You add the two new equations together, canceling out the y values, and get the x value. Then, you go back and plug in the x value in the original equation to get the y value.

Answer Link

Otras preguntas

What therapeutic practice is known to inflict great harm, and even death, on patients?.
what did the “brown power” movements advocate?
A loud alarm attached to a metal fence begins to ring. Student X has her ear against a pole of the fence while student Y stands away from the fence, as shown be
The cone and cylinder above have the same radius, r, and height, h. The volume of the cone is 90 cubic centimeters. What is the volume of the cylinder?
A stone is thrown vertically upwards from the ground with a velocity of 49m/s. after 2 seconds, another stone is thrown vertically upwards from the same place o
If he is choosing one event and one time how many options does he have for his birthday party?​​
1. Write a complex sentence. 2. Write a sentence with an adjective clause. 3. Write a compound sentence.
The value of y varies directly with x, and when x = y = 25. What is the value of HELP A GIRL OUT
HELP!!!!! 50 POINTS!
Least to greatest questions 7 and 8