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Ymorist [56]
2 years ago
6

If the first chapter of a certain book is 16 pages long and makes up 4% of the book, how many pages does the entire book have?

Mathematics
1 answer:
galina1969 [7]2 years ago
5 0
If 16 pages equal to 4%, how many pages will equal to 100%?

4/100 = 16/x
4x=1600
X= 400

So total pages should be 400.
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2r+7+2n+n2

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An Impressionist painting increases in value
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Answer:

A = $8406.6

Step-by-step explanation:

Given:

Average rate r=9\%

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Time t = 20\ years

We need to find the final amount of painting at the end of a 20-year.

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Using Exponential Growth rate formula as:

A = a(1+r)^t  ----------(1)

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r = Rate as a decimal.

t = Time.

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A = 1500(1+0.09)^{20}

A = 1500(1.09)^{20}

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4 years ago
An airline claims that the proportion of no-shows for passengers who booked on its flights is less than 0.06. In a random sample
Genrish500 [490]

Step 1:

In a sample of 380 randomly selected reservations, 19 were no-shows.

Step 2:

Proportion of no shows p<0.06.

Step 3:

Test Value

z(19/380)=0.05

Step 4:

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b) 0.05-(-1.943) = 0.05+1.943=1.993

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Ten times the sum of half a number x and 8 is 12.
Diano4ka-milaya [45]

BREAKDOWN

10 times: 10 ×

The sum of: ( ) + ( )

which would be : 10 × ( ) + ( )

half a number: 10 × ( X/2 ) + ( )

and 8: 10 × ( X/2 ) + ( 8 )

is 12 : 10 × ( X/2 + 8 ) = 12

xxxxxxxxxxxxxxxxxxx

SIMPLIFICATION

Multiply ten: 10 X (X/2 + 8) = 12

which equals to: 5x + 80 = 12

bring the like terms together: 5x = 80 - 12

Equals: 5x = 78

Find out X:. x = 78/5

FINAL ANSWER:. X = 15.9

XXXXXXXXXXXXXXXXXXXXXXXCCC

6 0
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