Matematyka Gimnazjum Policzmy to razem uz zadania uzupełniające 1 zadanie 19 #19 a)1 5/6x(3/4+7/11)= b)0,88:(1 1/5-1 1/6)= c)7,2x1/3+2/3x2,7= d)(2,5+2/5):4 1/7= e)10,77-0,96:0,24= f)(4 1/2)do potęgi drugiej - (1 1/4)do potęgi trzeciej=
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a)1 5/6x(3/4+7/11)=61/24
b)0,88:(1 1/5-1 1/6)=29,3
c)7,2x1/3+2/3x2,7=17,49
d)(2,5+2/5):4 1/7=11,6
e)10,77-0,96:0,24=6,77
f)(4 1/2)do potęgi drugiej - (1 1/4)do potęgi trzeciej=18 19/64
a) 1i5/6 *(3/4+7/11)= 11/6 *(33/44 + 28/44) = 11/6 *61/44 = 1/6 * 61/4= 61/24
b) 0,88 :(1i1/5 -1i1/6) = 0,88: (1i6/30-1i5/30)= 88/100 : 1/30 = 88/100 *30/1=
= 88/10 * 3/1 = 264/10= 26i4/10 = 26i2/5
c) 7,2 *1/3 +2/3 *2,7 = 7i1/5*1/3 +2/3*27/10 = 36/5 *1/3 + 1/1 *9/5 =
= 12/5*1/1 + 9/5= 12/5 + 9/5 = 21/5 = 4i1/5
d) (2,5 + 2/5) : 4i1/7 = (2i1/2 +2/5) : 29/7=( 2i5/10 +4/10) : 29/7=
= 2i9/10 * 7/29 = 29/10 * 7/29 = 1/10* 7/1= 7/10
e) 10,77 -0,96 :0,24 = 10,77 - 4 = 6,77
f) (4i1/2)^2 - (1i1/4)^3 = (9/2)^2 - (5/4)^3 = 81/4 - 125/64 = 1296/64 -125/64=
= 1171/64 = 18i19/64