25abbykalis 25abbykalis

29-11-2021
Mathematics

contestada

Given: 8x - 3y= -21, 3x + y = -10; prove x= -3

Respuesta :

cheunglucas09 cheunglucas09

29-11-2021

8x-3y=-21
3x+y=-10

Substitute the value of y
8x-3y=-21
y=-10-3x

8x-3(-10-3x)=-21

x=-3

Answer Link

Otras preguntas

Supplementary angles are pairs of angles whose measures total 180º. Determine the measure of supplementary to an angle with a measure of 92°

Describe how the landforms were formed

read the question and select the answer

WHAT ARE THE 2 REVOLUTIONS THAT TOOK PLACE IN INDIA?

find product of :(2x-y)(2x+3y).

Which of these are cellular activities that sustain a single-celled organism through its lifetime? Select all that apply. The transmission of DNA to offspring,

whats 1/3 to the third power?

The area A of the rectangle shown is described by the inequality 12 compound inequality for x. 8x 3/4

A(n) ________ is a statement that describes what is happening in nature based on repeated experiments under the same conditions.

11. A surveyor at point S discovers that the angle between peaks A and B is 3 times as large as the angle between peaks B and C. The surveyor knows that ZASC is

ACCESS MORE