jadenjackson45
jadenjackson45 jadenjackson45
  • 26-04-2019
  • Mathematics
contestada

If x < 5, then which of the following must be true?

-x < -5
-x > -5
-x < 5
-x > 5

Respuesta :

mkryukova19 mkryukova19
  • 26-04-2019

Answer:

B

Step-by-step explanation:

x<5

When we multiply by negative number sign of inequality should be  changed also.

x*(-1) > 5*(-1)

-x>-5

Answer Link
carlosego
carlosego carlosego
  • 26-04-2019

For this case we have the following expression:

[tex]x <5[/tex]

By definition we have to:

Let [tex]c <0[/tex]. If [tex]a <b,[/tex] then [tex]ac> bc[/tex]

That is to say:

If we multilate on both sides of the inequality by -1, the sign automatically changes direction.

[tex](-1) (x) <(- 1) (5)\\-x> -5[/tex]

ANswer:

Option B

Answer Link

Otras preguntas

Find the equation of the line that contains the point (−4,−1) and is perpendicular to the line 4x+5y=15.
Someone please help me with these anything is helpful thanks
What conflict was caused, in part, by the assassination of Archduke Franz Ferdinand? A. World War I B. World War II C. the Franco-Prussian War D. the Russo-Japa
i need help i need help me
Round to the nearest thousandth5906÷72​
Someone plz help me
ASAP plss help me question 4 and 5 thank you
What is a percent? Give the definition using full sentences.
I dont really understand this so can someone help me please!
(a) calculate the %ic of the interatomic bond for the intermetallic compound tial3. (b) on the basis of this result, what type of interatomic bonding would you