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Mathematics 21 Online
OpenStudy (anonymous):

Evaluate. -|-2 + 9|

Parth (parthkohli):

It's an absolute value sign right?

OpenStudy (anonymous):

7 -11 -7

OpenStudy (anonymous):

sure

Parth (parthkohli):

\( \color{Black}{\Rightarrow -|7| }\) \( \color{Black}{\Rightarrow -7 }\)

OpenStudy (anonymous):

ok thank you

OpenStudy (anonymous):

how

Parth (parthkohli):

\( \color{Black}{\Rightarrow |7| \text{ is the distance of 7 from 0. The distance of 7 from 0 would be 7 only.} }\)

Parth (parthkohli):

\( \color{Black}{\Rightarrow |-7| \text{ is also 7, since it is 7 numbers away from 0.} }\)

OpenStudy (compassionate):

An absolute value is the number of marks it is from zero on the number line. In this case you have I-7 I, however, it wouldn't make sense to be negative seven marks from zero, so we say it is seven marks; or positive seven. 7

OpenStudy (anonymous):

oh ok thanks

OpenStudy (anonymous):

The answer is -7.

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