sansca9552 sansca9552
  • 21-06-2019
  • Mathematics
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What is the value of K?

What is the value of K class=

Respuesta :

luvhurts467 luvhurts467
  • 21-06-2019

Answer:

2

Step-by-step explanation:

m² = 4² + 8²  

m² = 16 + 64

m² = 80

l² = k² + 4²

l² = k² + 16

m² + l² = (k + 8)²   m² = 80,  (b)

80 + k² + 16 = k² + 16k + 64

k² - k² - 16k = 64 - 80 -16

-16k = -32

k = -32/-16

k = 2

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