cherrygreyson cherrygreyson
  • 17-05-2018
  • Mathematics
contestada

Solve for x.



7
12
21
4

Solve for x 7 12 21 4 class=

Respuesta :

ktreyb
ktreyb ktreyb
  • 17-05-2018
x² + 14² = (2√85)²
x² + 196 = 340
x² = 144

x = 12

The second option is your answer. 
Answer Link
choixongdong
choixongdong choixongdong
  • 17-05-2018
Pythagorean Theorem
a^2 + b^2 = c^2
or
a^2 = c^2 - b^2

in this case:

x^2 = (2√85)^2 - 14^2
x^2 = 340 - 196
x^2 = 144
x = 12
Answer Link

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