Pfvr me ajudem nessa 3 perguntas , resposta com calculo pfvr
Pfvr me ajudem nessa 3 perguntas , resposta com calculo pfvr
1 Resposta
Ver resposta
1)a) ![frac{3}{ sqrt{5} } = frac{3 sqrt{5} }{5}]()
b)![frac{7}{2 sqrt{7} } = frac{ sqrt{7} }{2}]()
c)![frac{6}{5 sqrt{3} } = frac{6 sqrt{3} }{15} = frac{2 sqrt{3} }{5}]()
d)![frac{3}{ sqrt{10} + sqrt{3} } = frac{3( sqrt{10}-3 sqrt{3}) }{7} = frac{3 sqrt{10}-3 sqrt{3} }{7}]()
e)![frac{5}{ sqrt{17}+4 } = 5( sqrt{17}-4) = 5 sqrt{17} -20]()
2)![frac{4}{6} = frac{8}{x}]()
![4x=48]()
< NP
3)![frac{x}{6} +x= frac{20}{28}]()
28x=20(6+x)
28x=120+20x
28x-20x=120
8x=120
x=120/8
x=15
![frac{20}{28} = frac{25}{y}]()
20y=700
y=700/20
y=35
x=15 e y=35
Espero ter ajudado!
![frac{3}{ sqrt{5} } = frac{3 sqrt{5} }{5}](/image/0171/8465/6fe17.png)
b)
![frac{7}{2 sqrt{7} } = frac{ sqrt{7} }{2}](/image/0171/8465/764d4.png)
c)
![frac{6}{5 sqrt{3} } = frac{6 sqrt{3} }{15} = frac{2 sqrt{3} }{5}](/image/0171/8465/16c22.png)
d)
![frac{3}{ sqrt{10} + sqrt{3} } = frac{3( sqrt{10}-3 sqrt{3}) }{7} = frac{3 sqrt{10}-3 sqrt{3} }{7}](/image/0171/8465/2bafc.png)
e)
![frac{5}{ sqrt{17}+4 } = 5( sqrt{17}-4) = 5 sqrt{17} -20](/image/0171/8465/84bf1.png)
2)
![frac{4}{6} = frac{8}{x}](/image/0171/8465/7a8d4.png)
![4x=48](/image/0171/8465/b7b8e.png)
![x=12](/image/0171/8465/555c2.png)
3)
![frac{x}{6} +x= frac{20}{28}](/image/0171/8465/7593d.png)
28x=20(6+x)
28x=120+20x
28x-20x=120
8x=120
x=120/8
x=15
![frac{20}{28} = frac{25}{y}](/image/0171/8465/66101.png)
20y=700
y=700/20
y=35
x=15 e y=35
Espero ter ajudado!
Sua resposta
Mais perguntas de Matemática
Top Semanal
Top Perguntas
![Toda Materia](https://escolaeducacao.org/assets/images/element/01.webp)
Você tem alguma dúvida?
Faça sua pergunta e receba a resposta de outros estudantes.