IdeasCuriosas - Every Question Deserves an Answer Logo

In Mathematics / Middle School | 2014-11-11

Solve the system of equations:

\[
2x - y = 4
\]

\[
5x - 2.5y = 10
\]

Asked by Lmedina718

Answer (2)

2x-y=4
Therefore: y=2x-4

5x-10/4(2x-4)=10
5x-5/2(2x-4)=10
5x-5x+10=10
10=10

*Problem can't be solved.

Answered by Anonymous | 2024-06-10

The system of equations has infinitely many solutions as both equations represent the same line. Any point on the line defined by y = 2 x − 4 is a solution. For instance, points like ( 5 , 6 ) and ( 0 , − 4 ) satisfy both equations.
;

Answered by Anonymous | 2024-12-26

Related Questions in Mathematics

[Answered] Select the correct answer. Which equation is equivalent to the given equation? [tex]$x^2-6 x=8$[/tex] A. [tex]$(x-6)^2=44$[/tex] B. [tex]$(x-3)^2=17$[/tex] C. [tex]$(x-6)^2=20$[/tex] D. [tex]$(x-3)^2=14$[/tex]

[Answered] Which phrase best describes the translation from the graph [tex]y=6 x^2[/tex] to the graph of [tex]y=6(x+1)^2[/tex]? A. 6 units left B. 6 units right C. 1 unit left D. 1 unit right

[Answered] What expression is equivalent to [tex]$\left(5 z^2+3 z+2\right)^2$[/tex] ? A. [tex]$5 z^4+3 z^2+4$[/tex] B. [tex]$5 z^4+9 z^2+4$[/tex] C. [tex]$25 z^4+30 z^3+19 z^2+12 z+4$[/tex] D. [tex]$25 z^4+30 z^3+29 z^2+12 z+4$[/tex]

[Answered] The graph of [tex]y=\frac{5}{4} x+1[/tex] is shown below. The coordinate ([tex]0, y[/tex]) is a solution of the equation. Given the [tex]x[/tex]-value of 0, what is the value of the [tex]y[/tex]-coordinate for the coordinate ([tex]0, y[/tex])? [tex]y=[/tex] [blank]

[Answered] If [tex]f(-2)=0[/tex], what are all the factors of the function [tex]f(x)=x^3-2 x^2-68 x-120[/tex]? Use the Remainder Theorem. A. [tex](x+2)(x+60)[/tex] B. [tex](x-2)(x-60)[/tex] C. [tex](x-10)(x+2)(x+6)[/tex] D. [tex](x+10)(x-2)(x-6)[/tex]