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VMariaS [17]
3 years ago
15

Arc length, radius*central angle

Mathematics
1 answer:
inna [77]3 years ago
6 0

Answer:

Step-by-step explanation:

The lenght of the circle is 2pi *10=20 pi

but the angle is 35 degress so the lenght of the arc is 20pi/360 * 35=700pi/360= 175pi/90

the second lenght is 2pi *5/360 * 124

=pi*124/36=31pi/9 have both

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In equation, let x be the number of male students
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y be the number of female students.
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a= x/7 -1
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a + b = 82, let b be the number of students.
a + (x + y) = 82
a + [7a+1 + (7a+1)/2] = 82
a + [{2(7a+1) + 7a+1} / 2] = 82
a + [(14a +2 + 7a +1) / 2] = 82
a + [(21a + 3) / 2] = 82
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a = 7

x = 7(7) +1, 49+1 = 50 male students
y=x/2, 50/2, 25 female students

50(male students) + 25(female students)  + 7 (adults) = 82





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