Desire17
Desire17 Desire17
  • 22-09-2017
  • Mathematics
contestada

If ax-a>2a and x-1<-2

If axagt2a and x1lt2 class=

Respuesta :

apologiabiology
apologiabiology apologiabiology
  • 22-09-2017
ax-a>2
x-1<-1

ok, in the first one, we can undistribute the a

ax-a>2
a(x-1)>2
and we known that x-1<-1, so x-1 is negative
we can assign c for x-1 to do c<-1 then

a(c)>2
ac>2
so if c is negative, then therefor a must also be negve to produce greater than 2
hmm, we see 2 choices that work, B and D

hmm, if c=-1.5
then a has to be 0.75
that is a possible solution so therefor B is false


the answer is D
Answer Link

Otras preguntas

what did Louis Pasteur prove/disprove?
what decimal is equivalent to 122/11?
The equation is:Point K is between points J and L. If JK= x^2-4x, KL= 3x-2 and JL=28, find the lengths of JK and KLbasically x^2-x-2 and how to solve that
which property is (3+5) times 6 = 3 + (5 times 6)
Can someone help factor the expression  y2 + 10xy + 25x2
what did Louis Pasteur prove/disprove?
Identify two powers the US Constitution prohibits the states from having.
write the equation a. a line with slope 2/3 that passes through the point (-3,6)b. a line that passes through the points (3,-1)and (5,7)
(10x^6 + 8x^4) / 2x^2
Please help I don't know what to do for number 40