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Softa [21]
2 years ago
14

This is equations and graph. Please answer correctly :(

Mathematics
1 answer:
miss Akunina [59]2 years ago
7 0
1. y= -x + 3

2. y = x - 3

3. y = 3x + 1

4. y = -3x - 3
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Please help ASAP!<br> Questions 1-4
marusya05 [52]

Answer:

it is a test I am not going to help

Step-by-step explanation:

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3 years ago
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6. Solve each system of equations. 7x – 12y = 180 7x = 84 b. | -16y = 4x 4x + 27y= 11​
soldi70 [24.7K]

Answer:

1: y= -15x

2: in the ss

Step-by-step explanation:

4 0
3 years ago
The USDA conducted tests for salmonella in produce grown in California. In an independent sample of 252 cultures obtained from w
Marat540 [252]

Answer:

 The decision rule is  

Fail to reject the null hypothesis

  The conclusion is  

There no sufficient evidence to show that the proportion of salmonella in the region’s water differs from the proportion of salmonella in the region’s wildlife

Step-by-step explanation:

From the question we are told that

   The first  sample size is n_1   =  252

    The number that tested positive is  k_1  =  18

     The second sample size is  n_2   =  476

     The number that  tested positive is  k_2 =  20

     The level of significance is  \alpha  = 0.01

Generally the first sample proportion is mathematically represented as

      \^ p _1 =  \frac{k_1 }{ n_1 }

=>    \^ p _1 =  \frac{18 }{ 252 }

=>    \^ p _1 = 0.071

Generally the second sample proportion is mathematically represented as

      \^ p _2 =  \frac{k_2 }{ n_2 }

=>    \^ p _2 =  \frac{20 }{ 476}

=>    \^ p _2 = 0.042

The  null hypothesis is            H_o  :  p_1 - p_2 = 0

The alternative hypothesis is  H_a :  p_1 - p_2 \ne 0

Generally the test statistics is mathematically represented

       z =  \frac{ \^ p_1 - \^ p_2  -  ( p_ 1 - p_2 )}{ \sqrt{\frac{\^ p_1 (1-\^ p_1)}{ n_1  } + \frac{\^ p_2 (1-\^ p_2)}{ n_2  }  } }

=>    z =  \frac{ 0.071 - 0.042  - 0 }{ \sqrt{\frac{0.071  (1-0.071)}{  252  } + \frac{0.042 (1-\^ 0.042)}{ 476  }  } }

=>    z =  1.56

From the z table  the area under the normal curve to the right corresponding to  1.56   is  

        P(Z >  1.56 ) =0.05938

Generally the p-value is mathematically represented as

         p-value =  2 * P(Z >  1.56 )

=>      p-value = 2 *  0.05938

=>      p-value = 0.1188

From the value obtained we see that   p-value  >  \alpha hence

  The decision rule is  

Fail to reject the null hypothesis

  The conclusion is  

There no sufficient evidence to show that the proportion of salmonella in the region’s water differs from the proportion of salmonella in the region’s wildlife

 

5 0
2 years ago
If 14 1 4 gallon of paint covers 13 1 3 of a wall, then how much paint is needed for the entire wall?
Sav [38]
B. 3.4 gallon is how much u need
3 0
3 years ago
Help me please hurry it up.
Katena32 [7]

The answer is either to change the - 1 to 0, or to add + 1 to it next to the - 1.

4 0
3 years ago
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