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Mathematics 9 Online
OpenStudy (anonymous):

|r-9|=-3

OpenStudy (jdoe0001):

\(\bf |r-9|= -3 \implies \begin{cases} +1(r-9)= -3\\ \bf -1(r-9)= -3 \end{cases}\)

OpenStudy (austinl):

^ Exactly, then you solve for each of them and you will have two answers. Got ninja'd by @jdoe0001 Congrats on being a greenie btw.

OpenStudy (jdoe0001):

ohh hhehe

OpenStudy (anonymous):

No solution?

hartnn (hartnn):

correct! you can use the fact that |....| can never be negative!

hartnn (hartnn):

thats what |....| do, they give out positive answer so that can never be = -3

OpenStudy (anonymous):

is kindly impossible did you copy it right

OpenStudy (anonymous):

absolute value can't equal a negartve so it's no solution

OpenStudy (anonymous):

because if you work your way back -3+9=6 so 6-9 =-3 but you have this |....| is it cant be a negtive

OpenStudy (anonymous):

yeah is not a solution

OpenStudy (anonymous):

ok

hartnn (hartnn):

correct, no solution is the final answer

OpenStudy (anonymous):

hey goku i never knew you know how do to math

OpenStudy (anonymous):

I have a test tomorrow on inequalities. Do you guys think I'm ready?

hartnn (hartnn):

lol yeah, bridinghoo, when i am free from saving the universe, i practice math

OpenStudy (anonymous):

we cant really tell cuz is only 1 problem and you did not solve it

hartnn (hartnn):

maybe practice few more problems, sofia ?

OpenStudy (anonymous):

try this one |2-6|5=?

OpenStudy (anonymous):

I'm doing a worksheet. It has 43 problems on it.

OpenStudy (anonymous):

good but do you know what is teh answer to the |2-6|5=?

OpenStudy (anonymous):

20?

OpenStudy (anonymous):

yep

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

was that easy or hard

OpenStudy (anonymous):

Easy

OpenStudy (anonymous):

ok just go practice your work sheet and you will be ready

OpenStudy (austinl):

\(|r+11|8=13\) :D

OpenStudy (anonymous):

r = -9.375 :D

OpenStudy (anonymous):

-9.375

OpenStudy (anonymous):

you got it

OpenStudy (austinl):

Should have two answers.....

OpenStudy (anonymous):

is a solution

OpenStudy (austinl):

And you should leave in exact terms.

OpenStudy (anonymous):

she is only in middle school or elementary school

OpenStudy (austinl):

Still a good habit to have.

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