gabevarg07 gabevarg07
  • 12-02-2015
  • Mathematics
contestada

Solve the system of equation algebraically
5x-2y=4
2x-y=1

Respuesta :

apologiabiology
apologiabiology apologiabiology
  • 12-02-2015
multiply second equation by -2
2x-y=1
mmultiply -2
-4x+2y=-2
add to first equation
5x-4x+2x-2x=4-2
x=2
subsitute
2(2)-y=1
4-y=1
subtrac 4
-y=-3
y=3

x=2
y=3
Answer Link

Otras preguntas

Which of the following statements is true? (1) HPV causes cancer of the cervix in females. (2) Hepatitis B virus causes cancer of the liver. (3) Many viral dise
What's the answer too x+7/7x+35*x^2-3x-40/x-8
Factor the expression 15x-^2-10x-5
how do you divide fractions
In what form is the energy that is absorbed by plants' leaves?
Alexa drew a retangle with an area of 36 square centimeters. The rectangle she drew has the smallest perimeter possible for this area. What is the lenght and wi
F(x) = 4x^2 - 3x + 2kx + 1 What's the value of k for which the function has two zeros?? Can someone show me step by step?
Determine whether the sequence converges or diverges. If it converges, give the limit.48, 8,4/3 ,2/9 ,...[tex]48, 8, \frac{4}{3} , \frac{2}{9} , ...[/tex]
how do i graph the parabolas y = 1/32x^2
Find all zeros of the function and write the polynomial as a product of linear factorsf(x)=x^4+29x^2+100