3 years ago

Help this is due tomorrow

Mathematics

2 answers:

nlexa [21]3 years ago

8 0

Answer:

n = 1.40 (second option)

kolezko [41]3 years ago

4 0

Answer:

The choice second;

$n = 1.40$

Step-by-step explanation:

$0.7n + 0.8n = 2.1 \\ 1.5n = 2.1 \\ \\ n = \frac{2.1}{1.5} \\ \\ n = \frac{21}{15} \\ \\ n = 1.4$

I hope I helped you^_^

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