3 years ago

Same question, but different answer option.

Mathematics

1 answer:

andriy [413]3 years ago

3 0

Answer:

5f - 3, I'm assuming there was a typo in the answer choices.

Step-by-step explanation:

10f - 5f + 2 - 5

5f - 3

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ACT scores have a mean of 20.8 and 9 percent of the scores are above 28. The scores have a distribution that is approximately no

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Answer: 5.37

Step-by-step explanation:

Let x = ACT scores.

Given: ACT scores have a mean of 20.8 and 9 percent of the scores are above 28. The scores have a distribution that is approximately normal.

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Now,

$P(X>28)=P(\dfrac{X-\mu}{\sigma}>\dfrac{28-20.8}{\sigma})\\\\= P(z>\dfrac{7.2}{\sigma})\ \ \ \ [z=\dfrac{X-\mu}{\sigma}]$ (ii)

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3 years ago

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wolverine [178]

Step-by-step explanation:

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A rope is cut into three pieces P, Q, and R the lengths of the pieces are in the ratio 3:5:7 if the rope is 33 feet 9 inches, fi

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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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