02-11-2017
Mathematics

contestada

Elimination
4x+5y=-15
-3x-2y=13

Respuesta :

Dreamer4102001 Dreamer4102001

04-11-2017

multiply the first equation by 3 and tge second by 4:
12x+15y=-45
-12x-8y=52
then add the equations:
0x+7y=7
7y=7
y=1
so 4x+5(1)=-15
4x+5=-15
4x=-20
x=-5

Answer Link

Otras preguntas

Question3..........................

Factor the polynomial completely. 12a4b2 – 18a3b2

What are the solutions to the equation? х^2 + 6x = 40

Expand the given power using the Binomial Theorem. (10k – m)5

prove that the following term

Please help :( real quick

list of arguments that support the US annexation of Hawaii

Which of the following is a possible cross section of a rectangular prism?

5 POINTS!! Please answer and show work! thank you so much :)))

Acid is added to a beaker containing crushed marble. What effect does stirring this mixture have on the system? the surface area of the particles increases