christinaraye30 christinaraye30

21-04-2020
Mathematics

contestada

What is the solution (q, r) to this system of linear equations?
12q + 3r= 15
-4q - 4r= -44
a.(-18,29)
b.(-2,13)
c.(8,-1)
d.(15,-44)

Respuesta :

Anisatunizzati Anisatunizzati

21-04-2020

Answer

r = 13

q = -2

step by step

12q + 3r = 15 | ×1 |

-4q - 4r = -44 | ×3 |

12q + 3r = 15

-12q - 12r = -132

____________+

-9r = -117

r = -117/-9

r = 13

12q + 3r = 15

12q + 3(13) = 15

12q + 39 = 15

12q = 15 - 39

12q = -24

q = -24/12

q = -2

Answer Link

Otras preguntas

Which best explains how the idea that “ignorance is bliss” fits into Kant’s argument? a. It is an ideal state that existed in the Garden of Eden. b. All people

Research for a client who owns used car dealerships shows that people who visit his website also visit certain popular car blogs. which targeting method would y

How does detergent, or liquid dish soap, break open the cell membranes and nuclear membrane?

Why organizing elements in increasing mass numbers would be rejected as a form of the periodic table?

What are some of the advantages and disadvantages of writing down a list or Bill of Rights?

A sample of an ionic compound containing iron and chlorine is analyzed and found to have a molar mass of 126.8 g/mol. what is the charge of the iron in this com

1/2 of 2/3 = 1/2 of ____ third(s) =____third(s)

a lamp costs $10 and a package of 4 light bulbs costs $3. How much would it cost to buy 8 lamps and one light bulb for each lamp?

What are four ways to incorporate evidence into a research paper?

female plant structure consisting of the stigma, style, and ovary is called?