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Annette [7]
3 years ago
6

Describe a real-world situation that can be represented by a linear relationship?

Mathematics
1 answer:
taurus [48]3 years ago
5 0
Every few days, on my way home from work, I pull into Ahmad's
Friendly Fuel and fill up my car's gas tank. 

His price has been $2.29 per gallon for almost 4 years now, and it still is. 

I don't always buy the same amount of gas, but no matter how much I buy,
my cost always fits the linear equation ...

           Cost  =  (2.29) · (number of gallons)            dollars.
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Trash Can has a volume of 5220 cm cubed and a height of 29, width of 12 what is the length?
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should be 60

Step-by-step explanation:

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A line has a slope of 3, is increasing, and passes through the point (2,7). What is its y-intercept?
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The y-intercept is 1
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Round 796.301 to the underlined place value.the underlined place value is 0
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Silicon wafers are scored and then broken into the many small microchips that will he mounted into circuits. Two breaking method
antoniya [11.8K]

Answer:

a

The estimate is  - 0.0265\le  K \le  0.0465

b

Method B this is because the faulty breaks are less

Step-by-step explanation:

The number of microchips broken in method A is  n_1 = 400

The number of faulty breaks of method A is  X_1 = 32

 The number of microchips broken in method B is  n_2  = 400

 The number of faulty breaks of method A is  X_2 = 32

  The proportion of the faulty breaks to the total breaks in method A is

       p_1 = \frac{32}{400}

      p_1 = 0.08

 The proportion of the faulty to the total breaks in method B is

      p_2 =  \frac{28}{400}

     p_2 =  0.07

For this estimation the standard error is  

      SE =  \sqrt{ \frac{p_1 (1 - p_1)}{n_1}  + \frac{p_2 (1- p_2 )}{n_2} } }

  substituting values

       SE =  \sqrt{ \frac{0.08 (1 - 0.08)}{400}  + \frac{0.07 (1- 0.07 )}{400} } }

      SE = 0.0186

The z-values of confidence coefficient of 0.95 from the z-table is  

       z_{0.95} =  1.96

The difference between proportions of improperly broken microchips for the two breaking methods is mathematically represented as

        K = [p_1 - p_2 ] \pm z_{0.95} * SE

substituting values

        K = [0.08 - 0.07 ] \pm 1.96 *0.0186

         K  =  - 0.0265 \ or  \ K  =  0.0465

The interval of the difference between proportions of improperly broken microchips for the two breaking methods is  

      - 0.0265\le  K \le  0.0465

3 0
3 years ago
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