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labwork [276]
3 years ago
12

Solve the equation -2x -18= 6

Mathematics
2 answers:
Ket [755]3 years ago
7 0
Refer to photo attached :)

Leno4ka [110]3 years ago
6 0
X= -12 and that’s you answer
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The sum of 4 times a number and 7 more than the number is 80
marusya05 [52]

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Step-by-step explanation:

4 0
2 years ago
A store sells 12 cans of nuts for $33. How much would it cost you to buy 7 cans of nuts?
Hoochie [10]
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Minnesota Public Radio wants to duplicate a survey conducted in 2016 that found that 65% of adults living in Minnesota felt that
vesna_86 [32]

Answer:

The number of people needed  is n =684  

Step-by-step explanation:

From the question we are told that

  The population proportion is  p = 0.65

   The margin of error is  E = 0.03

From the question we are told the confidence level is  90% , hence the level of significance is    

      \alpha = (100 - 90 ) \%

=>   \alpha = 0.10

Generally from the normal distribution table the critical value  of  \frac{\alpha }{2} is  

   Z_{\frac{\alpha }{2} } =  1.645

Generally the sample size is mathematically represented as

       n =[ \frac{Z_{\frac{\alpha }{2} }}{E} ]^2 * p(1-p)

=>    n =[ \frac{1.645 }{0.03} ]^2 * 0.65(1-0.65)

=>    n =684  

6 0
3 years ago
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ra1l [238]

Find the y-intercept then model it into y = .71x + b (b is the y-intercept).

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