Respostas

2013-06-22T21:06:34-03:00

a) 25 - 16 = 9

x^2 = 16 . 9

x^2 = 144

x = \sqrt{144}

x = 12

 

b) hipotenusa = w

w^2  = 6^2 + 8^2

w^2 = 36 + 64

w^2 = 100

w = \sqrt{100}

w = 10

--------#----------------#--------------------

6^2 = y . 10

36 = 10y

y = \frac{36}{10} =3,6

---------------#------------------------------

10 - 3,6 = 6,4

x^2 = 3,6 . 6,4

x = \sqrt{23,04} = 4,8

 

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