24-03-2017
Mathematics

contestada

Help me with number question 7

Help me with number question 7 class=

Respuesta :

wolf1728 wolf1728

24-03-2017

Just use the Pythagorean Theorem
(9 +x)^2 = 15^2 + x^2
x^2 + 18x + 81 = 225 + x^2
18x = 144
x = 8
So the three sides of the triangle are
15, 8 and 17

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