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Mathematics 10 Online
OpenStudy (anonymous):

Help

OpenStudy (anonymous):

OpenStudy (anonymous):

@Photon336

OpenStudy (anonymous):

@Vocaloid

OpenStudy (michele_laino):

here, we have a double inequality, so if we add 2 to all of three sides, we get: \[ - 5 + 2 \leqslant n - 2 + 2 \leqslant 2 + 2\] please simplify

OpenStudy (anonymous):

how would I simplify this?

OpenStudy (michele_laino):

what is -5+2=...?

OpenStudy (anonymous):

3?

OpenStudy (michele_laino):

ok! then what is 2+2=...?

OpenStudy (anonymous):

4

OpenStudy (michele_laino):

finally: what is -2+2=...?

OpenStudy (anonymous):

0?

OpenStudy (michele_laino):

ok! so the above inequality, is equivalent to this one: \[ - 3 \leqslant n \leqslant 4\]

OpenStudy (anonymous):

so that would be it?

OpenStudy (michele_laino):

yes! Now, what is the right option?

OpenStudy (anonymous):

3rd one

OpenStudy (michele_laino):

correct!

OpenStudy (anonymous):

OK thank you

OpenStudy (michele_laino):

:)

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