anonymous
  • anonymous
Find the length of AD if AB = 24, DE = 8, and DC = 12. A.) 8 B.) 10 C.) 12 D.) 14
Mathematics
schrodinger
  • schrodinger
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anonymous
  • anonymous
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anonymous
  • anonymous
anonymous
  • anonymous

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Vocaloid
  • Vocaloid
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Vocaloid
  • Vocaloid
alright, we can see from the drawing that AE + FB + DC = 24, which is the length of the bottom, right? first off, we need to find the length of AE from the diagram we can see that AE and FB are equal, so our equation becomes 2*(AE) + DC = 24 DC = 12, so 2*(AE) + 12 = 24 2*(AE) = 12 AE = 6, but we're not done yet
Vocaloid
  • Vocaloid
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Vocaloid
  • Vocaloid
according to the Pythagorean theorem, C^2 = 8^2 + 6^2 solve for C
anonymous
  • anonymous
ok what ur going to do is think a+b but you are left with de and dc but you have to think what would u do? add subtract what i was thinking to subtract the AB to the DC so what ur going to do is 24-12=12 so i was thinking 8 is not a answer cause what would u do with 8? 12-8-=4 so ur answer is C for the remainder of 8 so C=12 is ur answer
Vocaloid
  • Vocaloid
previous answer is incorrect
anonymous
  • anonymous
what are u just trying to show that ur smarter ok its wrong i know ur helping but you cant derecctly say its wrong with NO provf so why are u sayin its c what are u even doing? no offense i wouldn't let u help
Vocaloid
  • Vocaloid
C^2 = 8^2 + 6^2 C is clearly 10, not 12...
anonymous
  • anonymous
umm its says rigt there C=12 B is 10
Vocaloid
  • Vocaloid
C^2 = 8^2 + 6^2 = 64 + 36 = 100 C^2 = 100 C = 10
Vocaloid
  • Vocaloid
Oh, I see what you mean, what I meant was that C in my diagram was 12, not the answer choice C
anonymous
  • anonymous
oh its ok
Vocaloid
  • Vocaloid
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Vocaloid
  • Vocaloid
anyway, the final answer should be 10 (B)
Vocaloid
  • Vocaloid
sorry for the confusion, I should have picked a different variable name, like x

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