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Mathematics 21 Online
OpenStudy (anonymous):

Help please!!

OpenStudy (anonymous):

Which of the following is not an equivalent form of the compound inequality x - 1 < -12 or x + 12 > 10

OpenStudy (anonymous):

x < -11 or x > -2 A number line with an open circle on -11, shading to the left, and an open circle on -2, shading to the right. A number line with an open circle on -11, an open circle on -2, and shading in between. x > -2 or x < -11

OpenStudy (amistre64):

looks like you need to solve for x in the first part ...

OpenStudy (anonymous):

Can you explain how to?

OpenStudy (amistre64):

add or subtract as required

OpenStudy (amistre64):

also, since one of the options is 'wrong' then 3 of them say the same thing. can you eliminate the ones that say the same thing?

OpenStudy (anonymous):

the two written out answers? B and C?

OpenStudy (amistre64):

B and C are actually different, which means one of them is correct. since the solution is either B or C, then A and D define a correct solution. make a number line, and mark all the points that are defined in A and compare that to B and C

OpenStudy (anonymous):

Okay.

OpenStudy (anonymous):

Is it B? :)

OpenStudy (amistre64):

the question wants the option that is NOT accurate. if we model the solution found in A we get: <///////////o-----------o//////////////> -11 -2 this shading looks like an open circle at -11 shaded to the left, open at -2 shaded to the right; B defines this and is equal to A since A = D = B none of those are the correct option to choose

OpenStudy (anonymous):

Wait, I'm doing FLVS, though. None of the answers are correct?

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