Calcule o valor das expressões:
a)(4/5 sobre 2)x(4/5):(4/5sobre 3)=
b)2/7:1/14-(2/3 sobre 2):4/27=
c)(2/3sobre 2)x(2/3sobre 3):(2/3sobre 5)
d)raiz quadrada de:64/49+raiz quadrada de 36/49=
e)[(3/4sobre 2)+raiz quadrada de 1/64]:11/16
Por favor não consigo fazer,urgente,obrigada....
Respostas
respondido por:
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a)4/5 : 2/1 : 4/5 : 3/1
4/5 . 1/2 : 4/5 . 1/3
4/10 : 4/5 . 1/3
4/10 : 4/15
4/10 . 15/4 =3/2
b)2/7 : 1/14 - 2/3 : 2/1 : 4/27
2/7 .14/2 : 1/14 - 2/3 . 1/2 : 4/27
2/1 :1/14 - 2/6 : 4/27
2/1 . 1/14 - 2/6 . 27/4
1/7 1/7 - 27/121/7 - 1/12
1/7 - 1/6 . 27/2
1/7 - 27/12 =
m.m.c=84
12/84 - 189/84 = 77/84
c)(2/3 : 2/1 ) x (2/3 : 3/1) : ( 2/3 : 5/1)
(2/3 . 1/2) x (2/3 . 1/3 ) : (2/3 . 1/5 )
1/3 x 2/9: 2/15
2/27 : 2/15
2/27 . 15/2
15/27 = 5/9
d) \/¨¨64/49 + \/¨¨¨¨36/49 =
8/7 + 6/7=14/7 = 2/1 = 2
e)( 3/4 : 2/1 + \/¨¨1/64) : 11/16
( 3/4 . 1/2 + 1/8) : 11/16
( 3/8 + 1/8) : 11/16
4/8 : 11/16=
4/8 . 16/11 =
4/1 . 2/11=8/11
4/5 . 1/2 : 4/5 . 1/3
4/10 : 4/5 . 1/3
4/10 : 4/15
4/10 . 15/4 =3/2
b)2/7 : 1/14 - 2/3 : 2/1 : 4/27
2/7 .14/2 : 1/14 - 2/3 . 1/2 : 4/27
2/1 :1/14 - 2/6 : 4/27
2/1 . 1/14 - 2/6 . 27/4
1/7 1/7 - 27/121/7 - 1/12
1/7 - 1/6 . 27/2
1/7 - 27/12 =
m.m.c=84
12/84 - 189/84 = 77/84
c)(2/3 : 2/1 ) x (2/3 : 3/1) : ( 2/3 : 5/1)
(2/3 . 1/2) x (2/3 . 1/3 ) : (2/3 . 1/5 )
1/3 x 2/9: 2/15
2/27 : 2/15
2/27 . 15/2
15/27 = 5/9
d) \/¨¨64/49 + \/¨¨¨¨36/49 =
8/7 + 6/7=14/7 = 2/1 = 2
e)( 3/4 : 2/1 + \/¨¨1/64) : 11/16
( 3/4 . 1/2 + 1/8) : 11/16
( 3/8 + 1/8) : 11/16
4/8 : 11/16=
4/8 . 16/11 =
4/1 . 2/11=8/11
Kcy11:
Muito obrigada...
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