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ololo11 [35]
3 years ago
12

Can you please answer all three of these questions.

Mathematics
2 answers:
Bezzdna [24]3 years ago
8 0
What ever the guy above me said is correct
Dmitry_Shevchenko [17]3 years ago
6 0
First one is - $101.91
I’m not sure about the 2nd one but I got 6-7 percent
Third one is 70
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ZABD and ZDBC are supplementary angles.
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the answer is 50

Step-by-step explanation:

180-130=50

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How many liters of a 20% alcohol solution must be mixed with 60 liters of a 90% solution to get a 30% solution?
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The picturre explains the question
Alina [70]

Answer:

x = 47°

Step-by-step explanation:

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3 years ago
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Heights of young adult women in the United States are approximately Normal with a mean of 64 inches and standard deviation 2.7 i
sweet-ann [11.9K]

Answer:

The proportion of all young adult women in the United States are taller than 6 feet(72 inches ) is  

   P( X >  72) =0.0015233

Step-by-step explanation:

From the question we are told that

   The mean is  \mu =  64 \ inches

    The standard deviation is  \sigma =  2.7 \  inches

Generally  6 feet  is equivalent to 6 * 12 = 72 inches

Generally the proportion of all young adult women in the United States are taller than 6 feet(72 inches ) is mathematically represented as

       P( X >  72) =  P(\frac{X - \mu }{\sigma }  >  \frac{72  - 64 }{ 2.7 } )

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

       P( X >  72) =  P(Z >  2.963 )

From the z-table

  The area under the normal  curve to the right corresponding to 2.963  is  

     P(Z >  2.963 ) = 0.0015233

=>   P( X >  72) =0.0015233

3 0
3 years ago
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