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earnstyle [38]
3 years ago
11

Kevin correctly answered 75% of 32 test questions.

Mathematics
2 answers:
alukav5142 [94]3 years ago
5 0

Part A:

.75 * 32 = 24.

Kevin answered 24 questions correctly.

Part B:

He would have to get 2 more questions correctly.

.80 * 32 = 25.6

You cannot have a decimal of a question, so you round it up to being 26.

26 - 24 = 2

likoan [24]3 years ago
3 0

Answer:

part a-24 questions

part b-2 or 3 more questions

Step-by-step explanation:

part a-to find the number, change the percent into a decimal (.75) and multiply (24)

part b-first find how many questions need to be right to get 80% (.80 times 32=25.6). then subtract by how many he would get with a 75% (25.6-24=about 2 to 3 more questions, rounded 2)

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<h2>Answer:</h2>

The error interval for x is:

                  [3.65,3.74]

<h2>Step-by-step explanation:</h2>

The number after rounding off is obtained as:

                          3.7

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   3.65     3.66    3.67    3.68    3.69    3.70    3.71   3.72    3.73    3.74

( Because if we have to round off a number present in decimals to n place then if  there is a  number greater than or equal to 5 at n+1 place then it will result to the one higher digit  at nth place on rounding off and won't change the digit if it less than 5 )

         Hence, the error interval is:

             [3.65,3.74]

     

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3 years ago
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