ejuness22 ejuness22
  • 23-08-2020
  • Mathematics
contestada

Consider the system of linear equations.
x+y=9.0

0.50x + 0.20y = 4.05

Find the values of x and y.

Respuesta :

Аноним Аноним
  • 23-08-2020
  • Answer:

x = 7.5

y = 1.5

  • Step-by-step explanation:

x + y = 9.0  => x = 9 - y

0.50x + 0.20y = 4.05

0.5(9 - y) + 0.2y = 4.05

4.5 - 0.5y + 0.2y = 4.05

4.5 - 4.05 = 0.5y - 0.2y

0.45 = 0.3y

y = 0.45 : 0.3

y = 1.5

x = 9 - 1.5

x = 7.5

Answer Link

Otras preguntas

Which is an example of a competitive relationship? A. silverfish protected by army ants as they walk with them in the jungle B. ticks feeding off the blood o
who knows how to do this?
Which of the following shows the correct order of events? Catt’s “Winning Plan,” suffrage in some Eastern states, the Nineteenth Amendment suffrage in some East
What is picturesque?
what is the distance between points (4, -7) and (-5, 9)? Round to the nearest tenth of a unit |____|units
How to show the work for a5+b5
The temperature of a chemical reaction ranges between 30 degrees Celsius and 70 degrees Celsius. The temperature is at its lowest point when t = 0, and the reac
______ ustedes para que sirve el documento? A. Conocen B. Sabes C. Saben D. Conoceis
1: Why are siblings not genetically identical even if they have the same parents? 2: Why are offspring not genetically identical to either the parent in sexuall
i want an poem on jal hi jivan hai