adhilperumannil adhilperumannil
  • 24-04-2020
  • Mathematics
contestada

Solve the following pair of linear equations by the substitution and cross-multiplication
methods :
8x + 5y = 9
3x + 2y = 4

Respuesta :

benievenance benievenance
  • 24-04-2020

Answer:

x=-2,y=5

Step-by-step explanation:

Answer Link
Anisatunizzati
Anisatunizzati Anisatunizzati
  • 24-04-2020

Answer:

x = -2

y = 5

Step-by-step explanation:

3x + 2y = 4

2y = 4 - 3x

y = 2 - 3/2x

8x + 5y = 9

8x + 5(2 - 3/2x) = 9

8x + 10 - 15/2x = 9

8x - 15/2x + 10 = 9

16/2x - 15/2x = 9 - 10

1/2x = -1

x = -1/1/2

x = -2

3x + 2y = 4

3(-2) + 2y = 4

-6 + 2y = 4

2y = 4 + 6

2y = 10

y = 10/2

y = 5

Answer Link

Otras preguntas

What is codeswitching?
help for brainliest thank ill b posting more so check my profile
What is the area of the base of a paper cone, in square inches, with a height of 15 inches and a volume of 900 cubic inches?
List down 5 exercises you can do at homethat involve the skills in badminton. Write your answerson your activity notebook.​
1 Calculate the area of the rectangle. N 11 m 5 1/4 m
According to Montesquieu, what are the three sorts of powers possessed by the government. What is their role and particular functions?
where from do ve get leather and wool​
There are 25 boxes of cereal and 32 boxes of snacks at the Food Pantry. If each shelf can hold 8 boxes, how many shelves are needed to hold all the boxes?
please help me with this.
plzzz help The world's largest known source of ______________ can be found in this region under the Persian Gul coal gold silver petroleum