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sdas [7]
3 years ago
6

chuck jogged the same distance on tuesday and friday, but jogged 8 miles on sunday . if he ran a total of 2o miles, how many mil

es did he run on tuesday?
Mathematics
1 answer:
aniked [119]3 years ago
3 0
2x + 8 = 20
2x = 20 - 8
2x = 12
x = 12/2
x = 6.....he ran 6 miles on Tuesday...also ran 6 miles on Friday
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Complete Question

The complete question is shown on the uploaded image  

Answer:

1 ) The correct option B

2) The correct option is  C

3)  The correct option is  C

4)  The correct option is  C

Step-by-step explanation:

From the question we are told that

   The proportion that own a cell phone  is  p = 0.90

    The  sample  size is  n =  15

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Generally the standard deviation of the number of students who own a cell phone in a simple random sample of 15 students is mathematically represented as

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            \sigma  =  \sqrt{ 15 *  0.90 *  0.10 }

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Generally the probability that all students in a simple random sample of 15 students own a cell phone is mathematically represented as

   P(X =  15) =  \left 15} \atop {}} \right.C_{15} *  p^{15} *  q^{15 - 15}    

     P(X =  15) =  \left 15} \atop {}} \right.C_{15} *  (0.90)^{15} *  (0.10 )^{15 - 15}

From the combination calculator  is      \left 15} \atop {}} \right.C_{15} =  1

     P(X =  15) = 1 *  0.205891 *  1

      P(X =  15) = 0.206

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