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Elan Coil [88]
3 years ago
6

How can you use a pattern to add 20+30+40+50+60+70+80​

Mathematics
1 answer:
Usimov [2.4K]3 years ago
8 0

Answer:

\displaystyle \: \: \: \: 7 \\ \: \: \sum \: (10n + 10) \\ n = 1

Step-by-step explanation:

You can use Summation Notation as a pattern to evaluating "20 + 30 + 40 + 50 + 60 + 70 + 80":

\displaystyle \: \: \: \: 7 \\ \: \: \sum \: (10n + 10) \\ n = 1

I am joyous to assist you anytime.

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Answer:

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Step-by-step explanation:

Given that Mariana wears her coat only when temperature is colder than - 4°C

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Read 2 more answers
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