9514 1404 393
Answer:
Step-by-step explanation:
The equation for the total number of cases is ...
x + y = 20
The equation for the total cost of the cases is ...
20x +30y = 450
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<em>Additional comment</em>
The solution to these equations is (x, y) = (15, 5).
The subjects in the experiment are given as follows:
b) the two AP Statistics curricula.
<h3>What are the subjects of an experiment?</h3>
The subjects of an experiment are the hypotheses which are studied in the experiment.
For this problem, we are testing hypotheses involving two forms of the curriculum, hence the correct option is given by:
b) the two AP Statistics curricula.
More can be learned about the subjects of an experiment at brainly.com/question/2792045
#SPJ1
{country albums}:{jazz albums}=2:3
3{country albums} = 2{jazz albums}
{country albums} + {jazz albums} = 45
{jazz albums} = 45 - {country albums}
3{country albums} = 2(45 - {country albums})
3{country albums} = 90 - 2{country albums}
5{country albums} = 90
{country albums} = 18
I got this answer from the link:
brainly.com/question/2165977?entry=7190 I give them credit for this, as they were the original. For future reference, you can search your question at the top, and if someone has already answered that question and it is the same as yours, than you can use that, and thank them, etc. I hope this helps!<span />
Answer:
what grade is this lol I don't know
Answer:
Step-by-step explanation:
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Given:
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Combine like terms.
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Add 12 to both sides.
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Divide both sides by 9.
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Hope this is helpful.
