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marissa [1.9K]
2 years ago
5

Find the length of a B leave your answers in the terms of pi

Mathematics
1 answer:
algol [13]2 years ago
8 0

Answer:

AB = 6*120*pi/180 = 4pi

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Alvin is 9 years older than Elga. The sum of their ages is 89. What is Elga's age?
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Answer:

Alvin: 49

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Step-by-step explanation:

  1. The equation is 89 = x + (x-9).
  2. Remove the parenthesis and combine the like terms. 89 = 2x - 9
  3. Add 9 on both sides. 98 = 2x
  4. Divide by 2 on both sides. x = 49
  5. 49 is the age of Alvin. (49-9) 40 is the age of Elga.
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