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Trickzeera
@Trickzeera
December 2019
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Calcule os valores desconhecidos de cada item em que as retas t e s são transversais a um feixe de retas paralelas. (Teorema de tales)
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lazinhojose
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A)
5/x=8/(x+6)
5(x+6)=8x
5x+30=8x
8x-5x=30
3x=30
x=30/3
x=10
b)
x/4=y/5
x/y=4/5
(x+y):x=(4+5):4
13,5/x=9/4
9x=4(13,5)
9x=54
x=6
c)
(x+1):x=(3x-8):2x
x+1=(3x-8):2
2(x+1)=3x-8
2x+2=3x-8
3x-2x=8+2
5x=10
x=10/5
x=2
d)
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Verified answer
A)5/x=8/(x+6)
5(x+6)=8x
5x+30=8x
8x-5x=30
3x=30
x=30/3
x=10
b)
x/4=y/5
x/y=4/5
(x+y):x=(4+5):4
13,5/x=9/4
9x=4(13,5)
9x=54
x=6
c)
(x+1):x=(3x-8):2x
x+1=(3x-8):2
2(x+1)=3x-8
2x+2=3x-8
3x-2x=8+2
5x=10
x=10/5
x=2
d)
Tente os outros