dempseyfamily9 dempseyfamily9

11-10-2021
Mathematics

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Help this is due tomorrow

Help this is due tomorrow class=

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guanshan guanshan

11-10-2021

Answer:

n = 1.40 (second option)

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ghaithgh ghaithgh

11-10-2021

Answer:

The choice second;

[tex]n = 1.40[/tex]

Step-by-step explanation:

[tex]0.7n + 0.8n = 2.1 \\ 1.5n = 2.1 \\ \\ n = \frac{2.1}{1.5} \\ \\ n = \frac{21}{15} \\ \\ n = 1.4[/tex]

I hope I helped you^_^

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