brandonisfineaf brandonisfineaf
  • 04-06-2021
  • Mathematics
contestada

I’m failing I really need help please!

Im failing I really need help please class=

Respuesta :

samuelthankgod
samuelthankgod samuelthankgod
  • 04-06-2021

Answer:

3 and -4

Step-by-step explanation:

this is simple but difficult

let the number be x and second number be y

3x + 2y=1

x-y/2=5

from the 2nd equation

x-y/2=5

x=5+y/2

substitute value for x into equation 1

3x + 2y=1

3(5+y/2) + 2y= 1

15 +3y/2 +2y=1

15 + 7y/2=1

7y/2= 1 - 15

7y/2=-14

cross multiply

7y= -28

y= -28/7

y= -4

therefore second number is -4

substitute value for y into 1st equation

3x + 2y=1

3x + 2(-4) = 1

3x - 8= 1

3x= 1+8

3x= 9

x= 9/3

x= 3

therefore first number is 3

therefore two numbers are;

3 and -4

Answer Link

Otras preguntas

Where do the cranial nerves originate? Where do the spinal nerves originate?
The entire region of Northern Africa and southwest Asia has a climate generally described as?
if you live 35 miles from work & drive 35 mph how long would it take to get there
The circumference of a circle is 6.28.What is the area of the circle?
The diameter of your bicycle wheel is 25 inches. How far will you move in one turn of your wheel?
The entire region of Northern Africa and southwest Asia has a climate generally described as?
The Indus, Ganges, and Brahmaputra were important to ancient India because they were
The graph of y = 4x - 11 is translated up 8 units. Which equation represents the translated graph? f y = 4x - 19 g y = 4x - 3 h y = 12x - 11 j y = 12x - 3
other name for blood
Find an equivalent ratio for 22/55 then write the proportion ?