sabrinablacks0
sabrinablacks0 sabrinablacks0
  • 16-10-2018
  • Mathematics
contestada

What is the solution for this inequality?

-10x < 40
A.
x < -4
B.
x < 4
C.
x > -4
D.
x > 4

Respuesta :

meklit1
meklit1 meklit1
  • 16-10-2018
-10x<40
divide both sides with -10
x>-4
sign changes since it's divided with negative number
Answer Link
carlosego
carlosego carlosego
  • 16-10-2018

For this case we have the following expression:

[tex]-10x <40[/tex]

We must clear the x:

The -10 that multiplies the x, must be passed to the other side of the inequality, in the form of division. It should be noted that the sense of inequality changes because the number is negative. So, we have left:

[tex]x> \frac{40}{-10}[/tex]

Dividing we have:

[tex]x> -4[/tex]

Answer:

Option C

Answer Link

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