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liberstina [14]
3 years ago
12

Need to find the formula for:

Mathematics
1 answer:
BigorU [14]3 years ago
7 0
THE ANSWER IS 5061 -1 =1 AND THE DIVIDE BY 8
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Which of these groups of relative frequencies would be best represented by a pie chart?
Nonamiya [84]

Answer:

B.25%; 70%; 5%

Step-by-step explanation:

Other options have % very close to eachother, pie chart may not reflect the difference

4 0
3 years ago
The waiting times on hold for a call to a customer service department are observed to have the following probability distributio
Elina [12.6K]

Answer:

b. 9.2 minutes

Step-by-step explanation:

To find the expected waiting time for a random call from the sampie given by using the formula:

\sum (f(X)) = \dfrac{\sum f (x) \times x}{\sum x}

number of calls (x)           waiting time f(x) in minutes         f(x) *(x)

0                                                     0                                         0            

2                                                     3                                         6

4                                                     10                                       40

6                                                     15                                       90  

8                                                     10                                       80

10                                                     6                                       60  

\sum x = 30                                                                          \sum f(x) *x = 276

Therefore:

\sum (f(X)) = \dfrac{276}{30}

\sum (f(X)) = 9.2

5 0
3 years ago
What property is being used 9+(1+19)=9+_=
nataly862011 [7]

Answer:

20 or(1+19)

(3+17)

(19.5+.5)

there are infinity of choices

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Help<br> i need help<br> thanks
Dima020 [189]
D:23 because 23 minus 5 equals 18
6 0
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Is (-1, -4) a solution to a equation y=6x_ -2?​
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