Asked by Brit
Solve. 9 - c < 2 or -3c > 15.
I think it's -c < 7 and -c < -5 . Would you the two arrows facing each other?
I think it's -c < 7 and -c < -5 . Would you the two arrows facing each other?
Answers
Answered by
PsyDAG
9 -c < 2
Subtract 9 from both sides.
-c < -7
When multiplying by negative number, the carat gets reversed.
c > 7
Repeat for second inequality. Multiply both sides by -1/3.
c < -5
Subtract 9 from both sides.
-c < -7
When multiplying by negative number, the carat gets reversed.
c > 7
Repeat for second inequality. Multiply both sides by -1/3.
c < -5
Answered by
R_scott
9 - c < 2 ... adding c and subtracting 2 ... 7 < c
-3 c > 15 ... dividing by -3 ... c < -5
-3 c > 15 ... dividing by -3 ... c < -5
Answered by
Reiny
9 - c < 2 OR -3c > 15
-c < -7 OR -c > 5
c > 7 OR c < -5
On a number line, draw a line to the left with an arrow at its end starting at -5
and a line with an arrow at its end to the right of 7
-c < -7 OR -c > 5
c > 7 OR c < -5
On a number line, draw a line to the left with an arrow at its end starting at -5
and a line with an arrow at its end to the right of 7
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