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masha68 [24]
3 years ago
12

The library charges $2 to use the copier and $0.99 for each paid copied.if Jerry paid the librarian $8.93 ,how many copies did H

e make
Mathematics
2 answers:
alexandr402 [8]3 years ago
6 0
First subtract the 2 dollars then you will have 6.39 then divid by the .99 wich gives you 6.45 which you round up to 7 copious because you can’t have a 1/2 of a copy
Darina [25.2K]3 years ago
4 0
We already know he paid $2 to use the printer, so you have your first equation: $8.93 - $2.00 = $6.98.

He has to pay $0.99 for each copy he prints. 

You just need to multiply $0.99 by however many times it takes to get close enough to $6.98.

When I did that, I got 7. 

7 was the closest answer I got. So Jerry made 7 copies of paper or printed 7 pages.
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Answer:

a

Step-by-step explanation:

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Find the minimum sample size needed to estimate the percentage of Democrats who have a sibling. Use a 0.1 margin of error, use a
Brums [2.3K]

Answer:

The minimum sample size is  n  =135

Step-by-step explanation:

From the question we are told that

   The confidence interval is ( lower \ limit  = \  0.44,\ \ \   upper \ limit  = \ 0.51)

    The margin of error is  E =  0.1

   

Generally the sample  proportion can be mathematically evaluated as

     \r p = \frac{ upper \ limit  + lower \ limit }{2}

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Given that the confidence level is  98% then the level of significance can be mathematically evaluated as

         \alpha = 100 -  98

        \alpha = 2\%

        \alpha =0.02

Next we obtain the critical value of  \frac{\alpha }{2} from the normal distribution table  

   The value is

        Z_{\frac{\alpha }{2} } =  2.33

Generally the minimum sample size is evaluated as

      n  =[ \frac { Z_{\frac{\alpha }{2} }}{E} ]^2 *  \r p (1- \r p )

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6 0
3 years ago
If x=7 and y=−2, evaluate the following expression:2xy​
antoniya [11.8K]

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-28

Step-by-step explanation:

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6 0
2 years ago
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9
SashulF [63]

Answer:

n = -5

Step-by-step explanation:

Given

Digit = 0.000025

Required

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This can be splitted to

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Digit = 2.5 * 10^{-5}

Comparing n, the given options

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3 years ago
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