stfuBOZOOOOO
stfuBOZOOOOO stfuBOZOOOOO
  • 31-05-2021
  • Mathematics
contestada

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Respuesta :

lhsoftball lhsoftball
  • 31-05-2021
X=69 for the second one
Answer Link
helper27738
helper27738 helper27738
  • 31-05-2021

Answer:

x≈7.5

Step-by-step explanation:

Part A:

Let's call the missing side of x:

5²+x²=9²

25+x²=81

x²=56

x= square root of 56

x≈7.5

Part B:

The sum of the internal angles of a triangle is always 180°, and the square in the top angle means that it is 90°, so:

90°+21°+y=180°

y=180°-90°-21°

y=69°

Answer Link

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