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s2008m [1.1K]
3 years ago
11

Find the length of a using the Pythagorean theorem

Mathematics
2 answers:
maxonik [38]3 years ago
8 0

Answer:

{a }^{2}  +  {9}^{2}  =  {15}^{2}  \\  {a}^{2}  =  - 81  +   225 \\  {a}^{2}  = 144 \\ a =   \sqrt{144 \:  }  \\ a = 12

nekit [7.7K]3 years ago
7 0

Answer:

a = 12

Step-by-step explanation:

a² + 9² = 15²

a² = 15² - 9²

a² = 225 - 81

a² = 144

take the square root of both sides

a = 12

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