SpeechlessZzz SpeechlessZzz

18-02-2017
Mathematics

contestada

7x - y= -10, -7x + 5y= -6 (linear combination)

Respuesta :

diarra36 diarra36

18-02-2017

7x-y=-10
-7x+5y=-6

(7x)+(-7x)= 0
(-y)+(5y)= 4y
(-10)+(-6)=-16

so... ANSWER: 4y=16

Answer Link

Otras preguntas

Which of the following statements have the same result? Explain each step in solving each one. f(1) when f(x) = 5x + 1 f−1(3) when f(x) = 2x plus 3, all over 5

Find the additive inverse. 6

A peregrine falcon can fly at 322 kilometers per hour. How many meters per hour can the falcon fly?

if four times a number plus 3 is 11, what is the number

Which of the following undergoes change during a chemical reaction? A. atomic masses of elements in reactants B. element identities of atoms in reactants C. tot

1.0×10−15divided by 4.2×10−7

Is dessert a false or true cognate or a borrowed word?

calculate f(4) for each function below

The weather station has issued a warning because there is a tornado in your area. It is traveling northwest at 30 miles per hour. This information describes the

Choose the equation of the horizontal line that passes through the point (-8, -7). y = -8 y = -7 x = -8 x = -7 ANSWERS ONLY PLEASE! :)