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Artyom0805 [142]
3 years ago
12

1) A librarian noticed that 60% of seventh graders checked out fantasy books. About how many of 240 seventh graders would checko

ut fantasy books? (Type answer as rational number, no units.) *
Mathematics
2 answers:
Hitman42 [59]3 years ago
4 0

Answer:

Step-by-step explanation:

katovenus [111]3 years ago
3 0

We have been given that a librarian noticed that 60% of seventh graders checked out fantasy books. We are asked to find the number of seventh graders from 240 seventh graders, who would checkout fantasy books.

To solve our given problem, we need to find 60% of 240.

\text{Seventh graders, who would checkout fantasy books}=240\times \frac{60}{100}

\text{Seventh graders, who would checkout fantasy books}=240\times 0.60

\text{Seventh graders, who would checkout fantasy books}=144

Therefore, 144 seventh graders would checkout fantasy books.

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The probability distribution for a random variable x is given in the table X: -5,-3,-2,0,2,3 Probability: .17,.13,.33,.16,.11,.1
Ivan

Answer:

0.6 probability that -2 \leq x \leq 2

Step-by-step explanation:

The probability distribution is given in the table.

Probability that x is between -2 and 2.

Between -2 and 2, inclusive, we have -2, 0 and 2. So

P(-2 \leq x \leq 2) = P(X = -2) + P(X = 0) + P(X = 2)

From the table:

P(X = -2) = 0.33, P(X = 0) = 0.16, P(X = 2) = 0.11. So

P(-2 \leq x \leq 2) = P(X = -2) + P(X = 0) + P(X = 2) = 0.33 + 0.16 + 0.11 = 0.60

0.6 probability that -2 \leq x \leq 2

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Six is less than or equal to the sum of a number n and 15
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Answer:

6(less than or equal sign) n+15

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10 minutes = 600 seconds

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