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OpenStudy (anonymous):
\[l4x+2l \ge10\]
OpenStudy (anonymous):
is this 14x?? or l4x??
OpenStudy (anonymous):
L4x*
OpenStudy (anonymous):
its 4x
OpenStudy (anonymous):
ohh ok
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OpenStudy (anonymous):
I put the l for absolute value
OpenStudy (anonymous):
ok
OpenStudy (anonymous):
so i think its x=2
OpenStudy (anonymous):
but theres a less then or equal to sign therefore aren't there 2 answers?
OpenStudy (anonymous):
yes, but i dont have that symbol. it would be 2 and -2
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OpenStudy (mathstudent55):
When you have an inequality of the form \(|X| \ge k\), where X is an expression in x and k is a number, change it to this compound inequality and solve the compound inequality:
\( X \ge k\) or \(X \le -k\)
OpenStudy (mathstudent55):
Now let's look at your problem.
\(|4x + 2| \ge 10\)
We use the above rule to change it to:
\(4x + 2 \ge 10\) or \(4x + 2 \le -10\)
OpenStudy (mathstudent55):
Now you need to solve each of those inequalities and write the word "or" in between the solutions.
OpenStudy (mathstudent55):
Do you need help with the two inequalities?
OpenStudy (anonymous):
no I got it thank you
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OpenStudy (mathstudent55):
What did you get for your final answer?
OpenStudy (anonymous):
\[x \ge2 or x \le-3\]
OpenStudy (mathstudent55):
Excellent work!
You deserve a medal.
OpenStudy (anonymous):
Thank You
OpenStudy (anonymous):
i had x =2 as well
lol
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