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pashok25 [27]
3 years ago
9

Help please the question is in the picture

Mathematics
1 answer:
scoundrel [369]3 years ago
5 0

Answer: I know R2 is reflexive property.

Step-by-step explanation:

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In a class of 100 students 45 students read physics, 52 students read Chemistry and 15 students read both the subject. Find the
Nikitich [7]

Answer:

12

Step-by-step explanation:

First,

Add 45+52+15

Then the answer will be 112

Then -(minus) from 100

7 0
3 years ago
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Work out the size of angle x.
Citrus2011 [14]

Answer:

180°-100°= 80°

x=80°

hope this is enough

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If sin(x) = 0.28, what is cos(90° - x)? A) 0.14 B) 0.28 C) 0.56 D) 0.62
Allushta [10]
B) 0.28
arcsin(.28)=x
x=16.3
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4 0
4 years ago
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g In 2013, the Pew Research Foundation reported that 43% of U.S. adults report that they live with one or more chronic condition
SOVA2 [1]

Answer:

We are 95% confident that the true proportion of U.S. adults who live with one or more chronic conditions is between 39.7% and 46.33%

Step-by-step explanation:

From the question we are told that

  The  sample  proportion is \r p = 43\%  = 0.43

   The  standard error is SE =  0.017

Given that the confidence level is 95%  then the level of significance is mathematically represented as  

      \alpha =  (100-95)\%

=>   \alpha = 0.05

Generally from the normal distribution table the critical value  of  \frac{\alpha }{2} is  

   Z_{\frac{\alpha }{2} } =  1.96

Generally the margin of error is mathematically represented as

     E = Z_{\frac{\alpha }{2} } *  SE

=>    E = 1.96 *  0.017

=>     E = 0.03332

Generally 95% confidence interval is mathematically represented as

      \r p -E <  p <  \r p +E

=>   0.43 -0.03332 <  p <  0.43 + 0.03332

=>    0.39668 <  p <  0.46332

Converting to percentage

(0.39668 * 100)<  p <  (0.46332*100)        

39.7\% <  p < 46.33 \%    

7 0
3 years ago
I need help with this question <br>-4 (2p+ 3) = -(p+1) - 2​
ankoles [38]

Answer:

-4 (2p+ 3) = -(p+1) - 2​

-8p -12 = -p-1-2

-7p=9

p=-9/7

Step-by-step explanation:

6 0
3 years ago
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