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Dafna11 [192]
3 years ago
10

I need help answering this question

Mathematics
2 answers:
blsea [12.9K]3 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]3 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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Find the value of x and y
Ann [662]

Answer:

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y=23

Step-by-step explanation:

angle (4x+4) and angle (7x-44) are alternate exterior angles which are equal, so we can set up an equation like this to find x:

4x+4=7x−44

calculate it then you'll get x=16

for the next one I'm not really sure how to explain since they are not labeled but,.. since we have the measure 39 we can figure out by using the pairs 'interior angles on the same side of a transversal' and 'vertical angles' that it's equal to 141, so to find y we use the equation

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3 years ago
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dybincka [34]
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3 years ago
19.
dmitriy555 [2]

Answer:

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Step-by-step explanation:

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