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Olin [163]
4 years ago
15

The difference of a number times

Mathematics
1 answer:
Hunter-Best [27]4 years ago
5 0
7 x  - 5 = 8 
7 x = 8 + 5
7 x = 13
x = 13/7 


7 ( 13/7) - 5 = 8 
91/7 - 35/7 = 56/7
56/7 = 56/7 = 8 

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Which expression is a perfect cube?
ycow [4]

Answer:

y^24

Step-by-step explanation:

a variable with an exponent has an exponent which is divisible by 3 then it is a perfect cube.

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Is 1:4 equivalent to 8:64
RUDIKE [14]
The answer is no

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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
Justin traveled 56.8 miles each day for the past 7 days. How many miles did he travel in all?
creativ13 [48]

56.8 * 7 = 397.6

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7 0
3 years ago
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SEE QUESTION IN IMAGE<br> Find the mean of the distribution above (a) ½ (b) 1 (c) 3 (d) 2
Afina-wow [57]

Answer:

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Step-by-step explanation:

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<u>Mean of the distribution of oranges:</u>

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Correct choice is d

8 0
3 years ago
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