70+74+87+85 = 316
For the 5th test score, an 80 average needs 400 as the total score. So 400-316 = 84 on the next test.
18--10=
the two negative signs make a plus so you simply have 18 + 10 which is 28
Answer:
your answer would probably be 20 bc I times 5 then times 2 then I got 10. Then I did 10 X 2 and I got 20
10/2.5=4 So, we should multiply it by 4
4x4=16 width
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The variance for the data is 17,507. 5.
Given
The weekly salaries of a sample of employees at the local bank are given in the table below.
Employee Weekly Salary Anja $245 Raz $300 Natalie $325 Mic $465 Paul $100.
<h3>Variance</h3>
Variance is the expected value of the squared variation of a random variable from its mean value, in probability and statistics.
The mean value of the salaries of employees is;

The variance is given by;

Hence, the variance for the data is 17,507. 5.
To know more about variance click the link given below.
brainly.com/question/7635845