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vredina [299]
3 years ago
13

Help Please?? 12. Of the following, which one is an observational study? A. Asking hearing-impaired people to try a new style of

earphone to get their opinion B. Comparing survival rates between treating bone cancer with surgery versus treating it with radiation C. recording the daily output of a balloon factory for 6 months D. polling people on their favorite color I believe it would be 'C', yes?
Mathematics
2 answers:
EleoNora [17]3 years ago
6 0
I don’t really kno but it should be d
Semmy [17]3 years ago
4 0
The answer to your question is d

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The lengths of AC and AB​ are each 10.6 units.

<u>Step-by-step explanation</u>:

Perimeter of a triangle = Sum of all the three sides of a triangle

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Answer:

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Step-by-step explanation:

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Shkiper50 [21]
Answer: TRUE:
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It is TRUE that the product of 21 (twenty-one) negative integer is a negative number; because you are multiplying an ODD NUMBER of NEGATIVE INTEGERS.
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