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Dafna11 [192]
2 years ago
10

I need help answering this question

Mathematics
2 answers:
blsea [12.9K]2 years ago
6 0

Answer:

I think D

Step-by-step explanation:

Because an experiment is defined as a scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact. This example is testing to see if the mouthwash is effective.

Alecsey [184]2 years ago
3 0

Answer:

I'm pretty sure it's D, sorry if I'm wrong

Step-by-step explanation:

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Step-by-step explanation:

Sum of −8.46 and 5.31 means we need to add −8.46+5.31.

We know that,

|-8.46| > |5.31|

It means we subtract 8.46 - 5.31

At hundredth place, 6-1 = 5

At tenths place, 4-3 = 1

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It would mean that, 8.46 - 5.31 = 3.15

8.46 has a negative sign. It means that the final answer will have negative sign i.e. −8.46+5.31 = -3.15

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Step-by-step explanation:

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Step-by-step explanation:

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