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zmey [24]
3 years ago
14

Find x. x = 4 x = 5 x = 6

Mathematics
2 answers:
alukav5142 [94]3 years ago
3 0

Answer:

x=4

Step-by-step explanation:

storchak [24]3 years ago
3 0

Answer:

Given triangles are similar

\frac{9}{6}  =  \frac{x}{4}  \\\frac{3}{2}  =  \frac{x}{4}  \\ x =  \frac{(3 \times 4)}{2}  \\  \boxed{x = 6}

<h3>Value of x is 6.</h3>
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7 0
3 years ago
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In a recent year, a sample of grade 8 Washington State public school students taking a mathematics assessment test had a mean sc
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Answer:

The  number is  N  =1147 students

Step-by-step explanation:

From the question we are told that

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percentage of the would you expect to have a score between 250 and 305 is mathematically represented as

      P(250 <  X <  305 ) =  P(\frac{ 250 - 281}{34.4 }  <  \frac{X - \mu }{\sigma }  < \frac{ 305 - 281}{34.4 }   )

Generally  

             \frac{X - \mu }{\sigma }  =  Z  (Standardized \ value \  of  \  X )

So  

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       P(250 <  X <  305 ) = P(z_2 < 0.698 ) -  P(z_1 <  -0.9012)

From the z table  the value of  P( z_2 < 0.698) =  0.75741

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The  number of students that will get this score is

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