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BigorU [14]
2 years ago
10

Some studies show that high school students are more successful when the school day begins after 9 am. To test this theory,

Mathematics
1 answer:
mrs_skeptik [129]2 years ago
6 0

Answer:

i think that the answer is b

Step-by-step explanation:

because there doing an  experiment in a controlled environment just to see what happen and if it works or if its true.

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