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zhuklara [117]
3 years ago
8

Help please ……………………..

Mathematics
2 answers:
ExtremeBDS [4]3 years ago
8 0

Answer:

b ≈ 48.6°

Step-by-step explanation:

Using the sine ratio in the right triangle

sin b = \frac{opposite}{hypotenuse} = \frac{9}{12} , then

b = sin^{-1} (\frac{9}{12} ) ≈ 48.6° ( to 1 dec. place )

Sergeeva-Olga [200]3 years ago
3 0
The above answer is correct
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slamgirl [31]

Answer:

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Step-by-step explanation:

From the question we are told that

     The population mean is  \mu  = 1500

     The standard deviation is  \sigma  =  300

     

From the question we are told that the score follow a normal distribution

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The proportion of score in the top 10% is mathematically

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Where x is the minimum score required to be in the top 10%

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

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So

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6 0
3 years ago
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Answer:

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Step-by-step explanation:

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6 0
2 years ago
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lidiya [134]

Answer:

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4 0
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Step-by-step explanation:

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3 years ago
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