maggiedelatte maggiedelatte
  • 12-03-2020
  • Mathematics
contestada

Solve the equation

- 9x – 2y=-12
2x+5y=-11

X=
Y=

Respuesta :

iyohalucky7 iyohalucky7
  • 12-03-2020

Answer:x=2, y=3

Step-by-step explanation:

solving this equation simultaneously

-9x - 2y=-12.............(1)

2x + 5y=-11.. ...........(2)

Using elimination method

Multiply equation 2 by 2 and equation 1 by 5

-45x -10y= -60...........(3)

4x + 10y=-22...............(4)

Subtracting equation 2 from 1

-41x + 0=-82

41x=82

x=82/41

X=2

To find y put x in equation 1

-9x - 2y= -12

-9(2)-2y=-12

-18-2y=-12

-2y=-12+18

-2y=6

Y= 6/2

Y=3

X=2, Y=3

Answer Link

Otras preguntas

1/2 + 1/4 = how many quarters
what is the equation of line a [2 points]​
1. An athlete runs 18 Kilometers in 2.5 hours, bicycles 150 Km in 4 hours, swims 10 Km in 3 hours. Calculate: a) the average speed for each leg of the triathlon
What is the slope of the line?
Which is true about distillation? (1 point) It uses semipermeable membranes to filter out particles. It removes mainly large particulate contaminants which sett
if tan of theta =3/4 what is sec of theta​
Please help me i don't understand
Jasmine is a police detective. To cope with her high level of stress, she goes to aerobic classes and works out in the gym four or five times a week. Jasmine is
How are Ada and Aiden alike? IXL
[PRECALC] Verify the following trigonometric identity using sin2x + cos2x = 1