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Troyanec [42]
3 years ago
15

Qtr is a right triangle TQR is a right triangle QS is an altitude which statements are true

Mathematics
1 answer:
Artemon [7]3 years ago
4 0

Answer:

the answer is 1and 3 that's right

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A research team is testing whether a fuel aditive increases a car's gas mileage. The maker of the additive claims that the addit
Thepotemich [5.8K]

Answer:

Yes  there is sufficient evidence to  reject the company's evidence

Step-by-step explanation:

From the question we are told that  

   The sample size is  n =  25

    The mean is  \= x = 5.3 \ mpg

     The standard deviation is  \sigma = 1.8 \  mpg

    The z-score is  z = -1.94

The null hypothesis is  H_o : \mu = 6 \ mpg

The alternative hypothesis is  H_a :  \mu \ne 6

 Generally the p-value is mathematically evaluated as  

           p-value   =  2 * P( Z

From the z table  the area under the normal curve to the left corresponding to    -1.94  is

         P( Z

=>  p-value   =  2 * 0.02619

=>  p-value   =  0.052

Let assume the level of significance is  \alpha = 0.05

 Hence the  p-value > \alpha this mean that

   The  decision rule is  

Fail to reject the null hypothesis

The conclusion is

 There is sufficient evidence to  reject the company's evidence

 

5 0
3 years ago
Which diagram represents the vector addition C=A+B. Which represents vector subtraction C=A-B?
olga55 [171]
If the vectors point towards the same direction, the magnitude of the vector quantities are added as in, C = A + B. If they point towards opposite direction, the magnitudes are subtracted giving a resultant vector equal to C = A - B. 
3 0
3 years ago
Select the correct answer.
Ratling [72]
I think it’s D but not completely sure!
5 0
2 years ago
Passes through (8,7) and (0,0)
quester [9]

Answer:

6,3

Step-by-step explanation:

8 0
3 years ago
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What is The prime factorization of 464
harkovskaia [24]
4 is your answer bud
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3 years ago
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