Solve.
–7 ≥ 13 – 5x
A.
x ≥ –4
B.
x ≤ –4
C.
x ≥ 4
D.
x ≤ 4
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OpenStudy (anonymous):
x ≤ –4 ? @Dscdago
OpenStudy (anonymous):
You need isolate the x. Subtract the 13, so that the x its by itself
OpenStudy (anonymous):
so it's D. ?
OpenStudy (anonymous):
No, when you subtract 13, the equation should be -20>=-5x. From there you divide by -5. Since you are dividing by a negative, the sign changes direction.
OpenStudy (anonymous):
oh, okay. A .
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OpenStudy (anonymous):
When you divide -20 by -5, the negative cancels. Leaving 4. So, -20/-5=4
OpenStudy (anonymous):
Subtract 13 from both sides so that it will be \[-20\ge -5x\] Divide both sides by -5 and when you divide by a negative switch the signs so it'll be \[4\le x\]
OpenStudy (anonymous):
x ≥ 4 ?
OpenStudy (anonymous):
After dividing, the answer is 4<=x. @WordGEEK has a good explanation.