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

How do you solve absolute values -(2)^2 + |2-10|?
If six different chips are to placed on the board, how many different layouts are possible?
How much fabric is needed to make curtains for a 5foot tall 3 foot wide window?
5t+16=6-5t I need help solving step by step
An example of ________ is when federal officials force state officials to implement more stringent water pollution regulations.
what tools can scientists use to measure the volume of liquid
The remains of what appear to be the oldest stone temples have been discovered in ____.
What are hamful effects of poverty in ones' personal health?
Oliver is working on a puzzle of the Eiffel Tower. The tower in the puzzle is 28.5 in. tall. The packaging lists the scale as 1:415. What is the height of the a
What do you add to 31/4 to make 8