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Alenkasestr [34]
3 years ago
13

I need some help on these two questions.

Mathematics
1 answer:
Thepotemich [5.8K]3 years ago
4 0

Answer:

see explanation

Step-by-step explanation:

The length of the arcs are calculated as

arc = circumference of circle × fraction of circle

(13)

arc = 2πr ×\frac{72}{360}

      = 2π × 25 × \frac{1}{5} = 10π units

(14)

arc = 2π × 2 × \frac{270}{360}

      = 4π × \frac{3}{4} = 3π units

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12 +3/2s - 1/2 - 3/4s = 5/4s<br><br> How to solve for s?
rodikova [14]

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given equation in term of s is 12+3/2s-1/2-3/4s=5/4s

to solve this first we need to take LCM on left hand side and right hand side                                                                                                                                      we can rewrite given equation as 12/1+3/2s-1/2-3/4s=5/4s                                                    now taking LCM of {1,2s,2,4s,4s} is 4s                                                                                  then the equation becomes                                                                                                              48s/4s+6/4s-2s/4s-3/4s=5/4s

(48s+6-2s-3) /4s=5/4s                                                                                                                      now cancel out denominator of both side                                                                                   we get     48s+6-2s-3=5                                                                                                                      this implies 46s+3=5

                 46s=2

                     s=1/23

Hence the value of s is 1/23

learn more about LCM here brainly.com/question/8463488

#SPJ9

3 0
1 year ago
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