Mathematics
9 Online
OpenStudy (anonymous):
|r-9|=-3
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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!
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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
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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
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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=?
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OpenStudy (anonymous):
20?
OpenStudy (anonymous):
yep
OpenStudy (anonymous):
ok
OpenStudy (anonymous):
was that easy or hard
OpenStudy (anonymous):
Easy
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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
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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.