3 years ago

Eduardo solved the following inequality, and his work is shown below:

Mathematics

1 answer:

adell [148]3 years ago

5 0

Answer:

When dividing by −9, he did not change the ≥ to ≤.

Step-by-step explanation:

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stealth61 [152]

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Given that,

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$P\%=\dfrac{SP-CP}{CP}\times 100\\\\\dfrac{10}{100}=\dfrac{550-CP}{CP}\times 100\\\\\dfrac{1}{10}=\dfrac{550-CP}{CP}\\\\CP=5500-10CP\\\\CP+10CP=5500\\\\11CP=5500\\\\CP=500$

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