MidasD315920 MidasD315920

03-11-2022
Mathematics

contestada

5x + 9y = 31 and - 2x - y = 11

Respuesta :

LatriceG352539 LatriceG352539

03-11-2022

5x + 9y = 31 -------------(1)

-2x - y = 11 ---------------(2)

Multiply through equation (2) by 9

-18x - 9y = -99---------------(3)

Add equation(1) and (2)

-13x = -68

Divide both-side by -13

x = 5.23

Substitute x in equation(1) and solve for y

-2(5.23) - y = 11

-10.46 - y = 11

Answer Link

Otras preguntas

What ship did christopher columbus sail on his first voyage

Which phrases describe the prime meridian? Check all that apply.

primera clase y segunda clase son dos tipos de

Solve Y-37 equals 82

Which best describes the Gulf of Tonkin Resolution? A) It was claimed by President Johnson as legal authorization for the military escalation of the U. S. role

30 POINTS AND BRAINLIEST ANSWER QUICK __________ is when you add or remove money from a bank account. A. An exchange B. A transaction C. An investment D. An in

What organs are involved in caring out these functions?

How do I explain in detail the sentence “The teacher was frustrated.”

Which must be true ?

_____ are pieces of information that support the main idea. Summaries Thesis statements Questions Supporting details