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

Find the area of the circles with : (vi) circumference = 66cm

change the direct speech into indirect speech in the following dialogue and write it paragraph

Adjustments ensure that ______ balances are reported at amounts representing the economic benefits that remain at the end of the period and will be used-up in f

Practice Use the slope formula to find the slope. 12 (0,3) 113, 1) 11-4, -3) Slope of lineli Slope of line 12 Questions have about this lesson 1

Three practices that should be discouraged among students

Bakit mahalaga ang pag-aaral ng heograpiya ng daigdig? ito ang sumusukat sa relihiyon ng tao at ng kapaligiran

In context, which is the best version of the underlined portions of sentences 2 and 3 (reprinted below)? The streets are not lined with stately old homes. There

Find the roots of the quadratic equation: [tex]2x^{2} - x - 10 = 0[/tex]

Pls solve. will mark brainliest for correct answer and good explanation.

Jake wants to enrich the nitrogen contents of his soil though fixation. Which crop can he use for this purpose? Wheat, sugarcane,cashew nuts, or alfalfa