3 years ago

Helppppppppppppppppppppppppp

Mathematics

1 answer:

VashaNatasha [74]3 years ago

7 0

First you need to find out how long she worked

7:32 to 3:43 is 8 hours and 11 minutes.

Multiply 6.75(her per hour salary) by 8 and you have $54. But you still have 11 minutes. 11 minutes is roughly 18.33% of an hour. So multiply 6.75 by 0.18 which is 1.25. Your answer is $55.24

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The mean of the scores if 6 students in a competitive exam is 25 marks.

Given scores of 6 students are: 10,30,50,40,20 in a competitive exam.

We have to find out the mean of the mark of 6 students in a competitive exam.

Mean is the sum of all the values in a set of data, such as numbers, measurements, divided by the number of values. It is also known as average.

Mean=∑X/n

∑X=10+30+50+40+20

=150

N=6

Now to calculate the mean we have to divide 150 by number of students which is 6.

Mean=150/6

=25 marks.

Hence the mean of the scores of 6 students is 25 marks.

Learn more about mean at brainly.com/question/1136789

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Marks of students =10,30,50,40,20.

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