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3 years ago

2. You may submit your answer to question l in essay form here.

Mathematics

1 answer:

AlexFokin [52]3 years ago

4 0

Answer:

I hope this helps

Step-by-step explanation:

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327 is the answer I think

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3 years ago

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In a large school, it was found that 77% of students are taking a math class, 74% of student are taking an English class, and 70

Iteru [2.4K]

Answer:

0.81 = 81% probability that a randomly selected student is taking a math class or an English class.

0.19 = 19% probability that a randomly selected student is taking neither a math class nor an English class

Step-by-step explanation:

We solve this question working with the probabilities as Venn sets.

I am going to say that:

Event A: Taking a math class.

Event B: Taking an English class.

77% of students are taking a math class

This means that $P(A) = 0.77$

74% of student are taking an English class

This means that $P(B) = 0.74$

70% of students are taking both

This means that $P(A \cap B) = 0.7$

Find the probability that a randomly selected student is taking a math class or an English class.

This is $P(A \cup B)$ , which is given by:

$P(A \cup B) = P(A) + P(B) - P(A \cap B)$

$P(A \cup B) = 0.77 + 0.74 - 0.7 = 0.81$

0.81 = 81% probability that a randomly selected student is taking a math class or an English class.

Find the probability that a randomly selected student is taking neither a math class nor an English class.

This is

$1 - P(A \cup B) = 1 - 0.81 = 0.19$

0.19 = 19% probability that a randomly selected student is taking neither a math class nor an English class

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3 years ago

charlie runs laps around a track. The table shows how long it takes him to run different numbers of laps. How long would it take

cestrela7 [59]

Answer:

<u>25 minutes</u>

Step-by-step explanation:

From the table,

2 laps takes time 10 min.

4 laps takes time 20 min.

6 laps takes time 30 min.

8 laps takes time 40 min.

10 laps takes time 50 min.

So, we can deduce the relation between the number of laps and time

the time over the number of laps at each row = 5

Which mean 1 lap takes 5 minutes

Therefore, to run 5 laps, it takes = 5 * 5 = 25 minutes

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3 years ago

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VladimirAG [237]

Answer:

Step-by-step explanation:

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Alinara [238K]

The answer is 1 25/56

I hope this helps!

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4 years ago

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