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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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Which postulate proves that the triangles below are similar?
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Answer:

Option (4)

Step-by-step explanation:

From the picture attached,

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3 years ago
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4 years ago
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6 0
3 years ago
Shirley wants to find an estimate for the number of bees in her hive.
Illusion [34]

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<h3>How to find the total estimate of the bees ?</h3>

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This means only 100 bees have not been marked on Tuesday.

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learn more on estimate here:brainly.com/question/16670022

#SPJ1

8 0
2 years ago
D-7 =-18<br> What’s the answer?
AlexFokin [52]

Answer:

D = - 9

Step-by-step explanation:

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D = -9

5 0
3 years ago
Read 2 more answers
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