mathishard14
mathishard14
05-01-2017
Mathematics
contestada
I need help I keep getting it wrong !!
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R2infinity1
R2infinity1
05-01-2017
18 greater than or equal z
You change the sign because the negative number becomes positive on the other side.
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apologiabiology
apologiabiology
05-01-2017
add 5 to both sides
5+13≤z+5-5
18≤z+0
18≤z
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