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Alexxx [7]
3 years ago
9

6 (3x-1)-10x if x=7 with work please :)

Mathematics
2 answers:
OleMash [197]3 years ago
7 0
6(3(7)-1) - 10(7)

6(21-1) - 70

6(20) - 70

120 - 70 

50
mixer [17]3 years ago
5 0
6(3(7)-1)-10(7)
6(20)-70
120-70
50
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Answer:

The appropriate solution is:

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(2) 0.171

Step-by-step explanation:

According to the question, the values will be:

The service rate of guess will be:

= 5+3.5

= 8.5 \ minutes

The mean arrival rate will be:

\lambda =\frac{60}{5}

  =7.5 \ cabs/hr

The mean service rate will be:

\mu= 7.05 \ cabs/hr

(1)

The average time a cab must wait will be:

⇒ W_q=22.95-\frac{1}{7.05}

⇒       =\frac{161.798-1}{7.05}

⇒       =\frac{160.798}{7.05}

⇒       =22.81 \ minutes

(2)

The required probability will be:

⇒ P(X\geq 6)=\frac{1-2.115}{1-7.5}

⇒                  =\frac{-1.1115}{-6.5}

⇒                  =0.171

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