Question

augem sabe responder

Answer 1

Questão 2: Em cada item a seguir, os ângulos em destaque são OPOSTOS PELO VÉRTICE, Qual o valor de X em cada caso?

Ângulos opostos pelo vértice são congruentes, ou seja tem a mesma medida.

A) 5x - 70° = 2x + 20°

5x - 70° = 2x + 20°5x = 20° + 70°

5x - 70° = 2x + 20°5x = 20° + 70°5x - 2x = 90°

5x - 70° = 2x + 20°5x = 20° + 70°5x - 2x = 90°3x = 90°

5x - 70° = 2x + 20°5x = 20° + 70°5x - 2x = 90°3x = 90°x = 90°/3

5x - 70° = 2x + 20°5x = 20° + 70°5x - 2x = 90°3x = 90°x = 90°/3x = 30°

5x - 70° = 2x + 20°5x = 20° + 70°5x - 2x = 90°3x = 90°x = 90°/3x = 30°B) 2x - 20° = x + 20°

5x - 70° = 2x + 20°5x = 20° + 70°5x - 2x = 90°3x = 90°x = 90°/3x = 30°B) 2x - 20° = x + 20°2x = x + 20° + 20°

5x - 70° = 2x + 20°5x = 20° + 70°5x - 2x = 90°3x = 90°x = 90°/3x = 30°B) 2x - 20° = x + 20°2x = x + 20° + 20°2x = x + 40°

5x - 70° = 2x + 20°5x = 20° + 70°5x - 2x = 90°3x = 90°x = 90°/3x = 30°B) 2x - 20° = x + 20°2x = x + 20° + 20°2x = x + 40°2x - x = 40°

5x - 70° = 2x + 20°5x = 20° + 70°5x - 2x = 90°3x = 90°x = 90°/3x = 30°B) 2x - 20° = x + 20°2x = x + 20° + 20°2x = x + 40°2x - x = 40°1x = 40°

5x - 70° = 2x + 20°5x = 20° + 70°5x - 2x = 90°3x = 90°x = 90°/3x = 30°B) 2x - 20° = x + 20°2x = x + 20° + 20°2x = x + 40°2x - x = 40°1x = 40°C) 8x - 10° = 6x + 5°

5x - 70° = 2x + 20°5x = 20° + 70°5x - 2x = 90°3x = 90°x = 90°/3x = 30°B) 2x - 20° = x + 20°2x = x + 20° + 20°2x = x + 40°2x - x = 40°1x = 40°C) 8x - 10° = 6x + 5°8x = 6x + 5° + 10°

5x - 70° = 2x + 20°5x = 20° + 70°5x - 2x = 90°3x = 90°x = 90°/3x = 30°B) 2x - 20° = x + 20°2x = x + 20° + 20°2x = x + 40°2x - x = 40°1x = 40°C) 8x - 10° = 6x + 5°8x = 6x + 5° + 10°8x = 6x + 15°

5x - 70° = 2x + 20°5x = 20° + 70°5x - 2x = 90°3x = 90°x = 90°/3x = 30°B) 2x - 20° = x + 20°2x = x + 20° + 20°2x = x + 40°2x - x = 40°1x = 40°C) 8x - 10° = 6x + 5°8x = 6x + 5° + 10°8x = 6x + 15°8x - 6x = 15°

5x - 70° = 2x + 20°5x = 20° + 70°5x - 2x = 90°3x = 90°x = 90°/3x = 30°B) 2x - 20° = x + 20°2x = x + 20° + 20°2x = x + 40°2x - x = 40°1x = 40°C) 8x - 10° = 6x + 5°8x = 6x + 5° + 10°8x = 6x + 15°8x - 6x = 15°2x = 15°

5x - 70° = 2x + 20°5x = 20° + 70°5x - 2x = 90°3x = 90°x = 90°/3x = 30°B) 2x - 20° = x + 20°2x = x + 20° + 20°2x = x + 40°2x - x = 40°1x = 40°C) 8x - 10° = 6x + 5°8x = 6x + 5° + 10°8x = 6x + 15°8x - 6x = 15°2x = 15°x = 15°/2

x = 7,5°

Espero ter te ajudado ;)

Answer 2

a b) eu não lembro como faz, mas espero ter ajudado.

Explicação passo-a-passo:

1-)

a) y = 45°

x = 120°

z = 60°

c) 180 - 110 = 70°

y = 70° e z = 70°

x = 110

d) 180 - 108 = 72°

x = 72° e y = 72° pois são ângulos opostos

z = 108

2-)

a) 5x - 70° = 2x + 20°

5x - 2x = 20 + 70

3x = 90

x = 90 ÷ 3

x = 30°

5 × 30 = 80°

b) x + 20 = 2x + 20

x - 2x = 20 - 20

-x = 0

c) 6x + 5° = 8x - 10°

6x - 8x = -10 + 5

-2x = -15

2x = 15