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T4RS1L4
@T4RS1L4
August 2019
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Determine o valor de X na figura a seguir.
a figura e um pentágono (cinco lados) e os ângulos são:
2x-20 e x+25 e x e 3/2 x e x+15
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anvigo33
Verified answer
S=(n-2).180
s=(5-2).180
s=3.180=540 a soma dos angulos internos do pentagono
2x-20
x+25
x
1,5x
x+15
______ +
6,5x +20 logo 6,5x+20=540
6,5x=540-20
6,5x=520
x= 520:6,5
x=80
1 votes
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Verified answer
S=(n-2).180s=(5-2).180
s=3.180=540 a soma dos angulos internos do pentagono
2x-20
x+25
x
1,5x
x+15
______ +
6,5x +20 logo 6,5x+20=540
6,5x=540-20
6,5x=520
x= 520:6,5
x=80