2382000240 2382000240

26-02-2021
Mathematics

contestada

Solve the following by substitution
2x - 3y = -6
-5x - 9y = 15

Respuesta :

Yang100 Yang100

26-02-2021

Answer:

x=-3, y=0. (-3, 0).

Step-by-step explanation:

2x-3y=-6

-5x-9y=15

---------------

-3(2x-3y)=-3(-6)

-5x-9y=15

----------------------

-6x+9y=18

-5x-9y=15

--------------

-11x=33

x=33/-11=-3

2(-3)-3y=-6

-6-3y=-6

3y=-6-(-6)

3y=-6+6

3y=0

y=0/3=0

Answer Link

Otras preguntas

a forest fire burns down most of the trees in a large forest. The animals that live in the trees are forced to move to other areas. what kind of disturbance is

Use point-slope form to write the equation of a line that has a slope of 2/3 and passes thru (-3,-1)

who established a claim in the new world for england

120 grams of calcium nitrite Ca(NO2)2 is dissolved in a 240 mL solution. What is the molarity of the solution???Help?!?!

The _____ lived in the region that eventually became the Russian Empire. Slavs Poles French Mongols

In these lines from Verse V of “Ode to a Nightingale” by John Keats, what is the speaker imagining? being a bird in the forest at night his life, after h

Which of these is heated up the least by the sun’s energy

Identify the parent function that can be used to graph the function f(x)= -9(x+5)2

Which of the following best defines a nation-state? A. A country where most inhabitants are of the same ethnicity B. A country that recently formed from two ol

If you wanted to check the meaning of novice in paragraph one, you would use A) a general dictionary B) a medical dictionary C) a dictionary of idioms D)