corsi3541 corsi3541
  • 04-06-2021
  • Mathematics
contestada

A first number plus twice a second number is 4 twice the first number plus the second totals 11 find the number

Respuesta :

Ritmeks
Ritmeks Ritmeks
  • 05-06-2021

Answer:

6

Step-by-step explanation:

Let the first number be x

Let the second number be y

x + 2y= 4............equation 1

2x +y= 11............equation 2

From equation 1

x + 2y= 4

x = 4-2y

Substitute 4-2y for x in equation 2

2x + y= 11

2(4-2y) + y= 11

8-4y+y= 11

8-3y= 11

-3y= 11-8

-3y= 3

y= -1

Substitute -1 for y in equation 1

x + 2y= 4

x + 2(-1) = 4

x-2= 4

x = 4+2

x = 6

Hence the first number is 6

Answer Link

Otras preguntas

Square of the complex number (i - 2)?
Compute the value of the discriminant and give the number of real solutions to the quadratic equation: 3x^2 - 7x + 9 = 0
If the length of each side of a square prism is ten feet. Find the total surface area of this object
Hello, I need help please for mission 3 thank you very much.
David helped his father stock the pond with baby catfish and blue gill. They put in a total of 75 fish. If the number of blue gill was doubled and the number of
Multiply these fractions (Lowest Terms) a) 2 x 3/4 b) 3 x 3/5 c) 4 x 1/3 d) 6 x 2/5 e) 1/2 x 1/4 f) 4/5 x 2/3 g) 5/6 x 3/4 h ) 1/10 x 2/3 i) 2 1/5 x 1/
Find 4 consecutive odd integers where the product of the two smaller numbers is 64 less than the product of the two larger numbers.
What number is equivalent to 13/2
find the point on the y-axis that is equidistant from (6,1) (-2,-3)
Find 4 consecutive even integers where the product of the two smaller numbers is 72 less than the product of the two larger numbers?