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krek1111 [17]
3 years ago
8

What is the difference (7² + 8² + 9²) - (6² + 5² + 4²)

Mathematics
1 answer:
prisoha [69]3 years ago
5 0

Answer:

199

Step-by-step explanation:

49 + 64 + 81 - 36 +25+16

194 - 36 +25 + 16

-36 + 25 + 16

= -11 + 16 = 5

194 + 5 = 199

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25 of the 36 collars will be accepted. I just counted the numbers that were either "14" "15" or "16" because the company will only accept the collars that have 14-16 miligrams of medicine in them.

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