anonymous
  • anonymous
HELP PLEASE!! As the second hand of the clock rotates the large gear turns 40 degrees. AE = 7 inches, and CD = 5 inches. AC, the length of the chain between the gears is 23 inches. How far does the chain around the circumference of the large gear move to the nearest tenth of an inch? (Enter only the number.)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
1 Attachment
anonymous
  • anonymous
CAN SOMEONE EXPLAIN IT STEP BY STEP PLEASE?
anonymous
  • anonymous
@Kainui @Hero @iambatman @ganeshie8 @pooja195

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More answers

anonymous
  • anonymous
@Vampdie2
anonymous
  • anonymous
@Goose.
anonymous
  • anonymous
@Learner11
anonymous
  • anonymous
@dan815
anonymous
  • anonymous
@henrry123 @americansniper12 @Vampdie2 @MikaTadashi @Elsa213 @SyedMohammed98
anonymous
  • anonymous
@haleyright @misty_fox @mm3591 @Mehek14
dan815
  • dan815
okay so
dan815
  • dan815
the chain is dragged along the smaller gear as it turns 40 degrees
dan815
  • dan815
what is the distance the chain moved?
dan815
  • dan815
|dw:1441399747422:dw|
dan815
  • dan815
so u see the arc length of that thing
dan815
  • dan815
|dw:1441399865127:dw|
dan815
  • dan815
can you find the arc length?
dan815
  • dan815
hint the circumferece of the whole circle is 2pi*r thats for 360 degrees so for 40 degrees how much should it be
anonymous
  • anonymous
I still dont understand it!
dan815
  • dan815
okay lets start with the smaller piece all by itself
anonymous
  • anonymous
ok
dan815
  • dan815
|dw:1441400103489:dw|
dan815
  • dan815
x is that arc length for 40 degrees
anonymous
  • anonymous
this is confusing im sorry
dan815
  • dan815
how about the circumference of the circle do you know that formula
anonymous
  • anonymous
2pi*r
dan815
  • dan815
right okay plug in for radius
dan815
  • dan815
what si the whole circumferece of the small circle?
anonymous
  • anonymous
251.33?
anonymous
  • anonymous
31.42?
dan815
  • dan815
ya ist 10pi so 31.42 approximately
dan815
  • dan815
now 40 degrees is what fraction of 360
dan815
  • dan815
if you split 360 into parts of 40
anonymous
  • anonymous
9
dan815
  • dan815
right so 40 is 1/9th of 360
dan815
  • dan815
you can also split the circumference which belong to the 360 degrees in 9 ways so u can see how much of that circumference belongs to each 40 degrees
dan815
  • dan815
1/9th of 31.42 = length of x
dan815
  • dan815
to write it with our rounding its 10pi/9
dan815
  • dan815
without rounding
dan815
  • dan815
|dw:1441402206061:dw|
anonymous
  • anonymous
40
anonymous
  • anonymous
31.4
dan815
  • dan815
@Jhannybean
dan815
  • dan815
she will teach you
anonymous
  • anonymous
ok
Jhannybean
  • Jhannybean
youre pretty much done, you found x, right?
anonymous
  • anonymous
is x 31.4?
anonymous
  • anonymous
i'm not sure if this answer is right but is it 4.9? @Jhannybean @dan815

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