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cluponka [151]
3 years ago
8

200 books ; 75% decrease

Mathematics
2 answers:
noname [10]3 years ago
7 0
The answer is 150 books she loses 150 books
love history [14]3 years ago
5 0

Answer:

We have 200 books, and they decrease a 75%. This means that we have to find the difference between the 200 books and its 75%. So, first, we have to find how many books are 75%.

0.75(200)=150

If the books decrease a 75%, this means that after the decrease there are only 50 books, because

200-150=50.

<h3>Therefore, the 75% decrease of 200 books is 50 books, which represent the final 25%</h3>
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At the bike shop x, it cost $2.75 per hour plus a $3.00 deposit to rent a bike.AT Bike shop z cost $1.75 per hour plus a $7.00 d
Alex_Xolod [135]

Multiply the rate per hour by the number of hours (n) and add the deposit.

A)

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2.75n + 3.00 = 1.75n + 7.00

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6 0
3 years ago
4+8x=44 I need helpppp please someone help me
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6 0
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Read 2 more answers
The FBI wants to determine the effectiveness of their 10 Most Wanted list. To do so, they need to find out the fraction of peopl
koban [17]

Answer:

<em>98% of confidence intervals for the Population proportion of people who captured after appearing on the 10 most wanted list</em>

(0.3583 , 0.4579)

Step-by-step explanation:

<u>Explanation</u>:-

<em>Given sample size 'n' = 517</em>

Given data Suppose a sample of 517 suspected criminals is drawn. Of these people, 211 were captured.

'x' =211

<em>The sample proportion</em>

                                   p^{-}  = \frac{x}{n} = \frac{211}{517} =0.4081

                                  q^{-} = 1-p^{-} = 1- 0.4081 = 0.5919

<em>98% of confidence intervals for the Population proportion of people who captured after appearing on the 10 most wanted list</em>

(p^{-}  - Z_{\frac{\alpha }{2}  } \sqrt{\frac{p^{-} (1-p^{-} )}{n} } , p^{-} + Z_{\frac{\alpha }{2} } \sqrt{\frac{p^{-} (1-p^{-} }{n} } )

(0.4081  - 2.326   \sqrt{\frac{0.4081 (0.5919 )}{517} } , 0.4081+ 2.326\sqrt{\frac{0.4081(0.5919 }{517} } )

(0.4081-0.0498 , 0.4081 +0.0498)

(0.3583 , 0.4579)

<u><em>Conclusion</em></u>:-

<em>98% of confidence intervals for the Population proportion of people who captured after appearing on the 10 most wanted list</em>

(0.3583 , 0.4579)

7 0
3 years ago
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