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jpbueno40
@jpbueno40
April 2022
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Teorema de Tales ! SOCORRO
Me ajudem com as contas !!!
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claudiasoueu
12) AD=AB
(DB)² = 4²+4²
(DB)² = 32
DB = 4√3
============
(DC)² = (4√3)² + (4√3)²
(DC)² = 16.3 + 16.3
(DC)² = 96
DC = 4√6
-------------------------------------------------
13) a) 20²=9x²+16x²
400 = 25x²
400/25 = x²
16=x³
x = 4
b) (3√5)² = 6² + x²
9.5 = 36 + x²
45 - 36 = x²
x²=9
x=3
c) (x+1)² = √7² + x²
x² + 2x + 1= 7 +x²
2x=7-1
2x=6
x=6/2
x=3
d) (3√2)²=x²+x²
9.2=2x²
18 = 2x²
18/2=x²
x²=9
x=3
================
14) x²=8²+15²
x² = 64 + 225
x²=289
x=17
15) (6√2)2= x²+x²
36 . 2=2x²
x²=36
x=6
área do retângulo = b.h
Como AB=BC =x =6
BE= 2. 6=12
A = 6 . 12
A = 72
16) use a relação h² = mn
6² = 12n
36=12n
36/12 = n
n=3
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(DB)² = 4²+4²
(DB)² = 32
DB = 4√3
============
(DC)² = (4√3)² + (4√3)²
(DC)² = 16.3 + 16.3
(DC)² = 96
DC = 4√6
-------------------------------------------------
13) a) 20²=9x²+16x²
400 = 25x²
400/25 = x²
16=x³
x = 4
b) (3√5)² = 6² + x²
9.5 = 36 + x²
45 - 36 = x²
x²=9
x=3
c) (x+1)² = √7² + x²
x² + 2x + 1= 7 +x²
2x=7-1
2x=6
x=6/2
x=3
d) (3√2)²=x²+x²
9.2=2x²
18 = 2x²
18/2=x²
x²=9
x=3
================
14) x²=8²+15²
x² = 64 + 225
x²=289
x=17
15) (6√2)2= x²+x²
36 . 2=2x²
x²=36
x=6
área do retângulo = b.h
Como AB=BC =x =6
BE= 2. 6=12
A = 6 . 12
A = 72
16) use a relação h² = mn
6² = 12n
36=12n
36/12 = n
n=3