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Rainbow [258]
3 years ago
9

The exact value of cos 5pi/12 is:

Mathematics
1 answer:
Artist 52 [7]3 years ago
5 0

Answer: SMS

Step-by-step explanation:

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In a class, 60% of the students are girls. There are 18 girls in the class. How many boys are in the class? How many students ar
seraphim [82]
Percentage of students that are girls in the class = 60%
Number of girls in the class = 18
Let us assume the total number of students in the class = x
Then
60% * x = 18
(60/100) * x = 18
6x/10 = 18
6x = 18 * 10
6x = 180
x = 180/6
   = 30
So the total number of students in the class is 30.
Number of boys in the class = 30 - 18
                                               = 12
So there are 12 boys in the class. I hope the procedure is simple enough for you to understand.
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The last one is correct
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