blackheartderp
blackheartderp blackheartderp
  • 03-05-2014
  • Mathematics
contestada

which inequality is equivalent to 7x-2y> 8.

A) y> 7/2x+8
b) y>-2/7x+8/7
c) y <7/2x-4
d) y <-2/7x-4/7

(whats a Inequality? )

Respuesta :

Lilith
Lilith Lilith
  • 03-05-2014
[tex]7x-2y> 8 \ \ -7x \\ \\7x -7x-2y> 8 -7x \\ \\ -2y >8-7x \ \ / : (-2)\\ \\\frac{-2}{-2}\cdot y < \frac{8}{(-2)}-\frac{7}{(-2)}x \\ \\ y < \frac{7}{ 2}x -4 \\ \\ \\  Answer : \ c) \ y < \frac{7}{2}x-4[/tex]


[tex]If \ we \ multiply \ or \ divide \ both \ sides \ of \ an \ inequality \ by \ a \ negative \\ \\number \ we \ have \ to \ switch \ the \ direction \ of \ the \ inequality[/tex]






Answer Link

Otras preguntas

Davina selected 50 people at random and asked them whether they had watched the documentary on Antarctica on television the previous night. She repeated this su
What is an old Chinese belief concerned with tadpoles?
relationships among people are?
what percent of 64 is 8
How did Stanley Miller’s experiment in 1953 influence scientific thinking about the origin of life? A. It showed that radiometric dating could be used to accura
multiply (3x^3)(5x^2y)(x^5y^3)
What do the terms reincarnation, monotheism, salvation, & prophet have in common? Write a definition for each.
The people _____ arrived late had difficulty finding seats. which who
Which aspect of literary criticism deals with the techniques and style of the author? interpretation analysis evaluation
Which best includes elements with the most similar chemical properties? (1) Br, Ca, Hg (3) O, S, Se(2) Cr, Pb, Xe (4) N, O , F