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Advocard [28]
3 years ago
6

Q # 15 please help me to resolve

Mathematics
1 answer:
Dimas [21]3 years ago
7 0
The last one is the correct answer.
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The average time before breakdown of a machine is normally distributed and has a mean of 18 weeks and a standard deviation of th
IceJOKER [234]

Answer:

19.24 weeks

Step-by-step explanation:

Given that;

Mean, m = 18

Standard deviation, s = 3

Break down cost = 2000

Preventive maintenance cost = 1400

The optimal preventive maintenance level is Given by :

Mean + service level * standard deviation

Service level = preventive maintenance cost / (breakdown cost + preventive maintenance cost)

Hence,

Service level = 1400/(1400+2000) = 1400 / 3400

Service level = 0.4117647

Optimal preventive maintenance level :

18 + (0.4117647 * 3)

18 + 1.2352941

= 19.235

= 19.24 weeks

8 0
3 years ago
Jerhemy opened his bank account with 710 and withdrew 35 per week. Izzy opened her account with 570 and withdrew 25 each week. I
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Answer:

14 weeks at 220 dollars

Step-by-step explanation:

when you subtract over and over both touch 220 dollars on 14 weeks and its the only time where both touch

4 0
4 years ago
Which statement is true regarding the graphed functions?
Novosadov [1.4K]
I’m not exactly sure but maybe f(0) = 4 and g(–2) = 4
4 0
3 years ago
(15 x 79) - (15 x 39) using distributive property
Leviafan [203]
<span>(15 x 79) - (15 x 39) using distributive property
                         
1185 - 585</span>        =     800
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3 years ago
Which of the following is equivalent to the quotient below​
laiz [17]

Answer:

B

Step-by-step explanation:

Hope it helps and if you need explanation let it in the comments

7 0
3 years ago
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