Question

Ayuda Es para mañana porfis.
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Answer 1

usa la aplicación P H O T O M A T H desde play store

Answer 2

Enteros
A) (-3)•5•(-1)= (-15)•-(1)= 15
B) (-2)•(-13)•(-8)= 26•(-8)= -208
C) 36:(-18)= -2
D) -10:(-5)= 2
E) (-4)•(-1)•(-1)= 4•(-1)= -4
F) 1•(-11)•(-5)= -11•(-5)= 55
G) 11:(-11)= -1
H) -56:(-7)= 8

Raíces
1.-
A) 2
B) 9
C) 12
D) 22
E) 31
F) 35

2.-
A) 3,74 va entre 3 y 4
B) 4,89 va entre 4 y 5
C) 6,32 va entre 6 y 7

Operatoria combinada
A) 0,4•3,1
= 4/10 • 31/10
= 124/100 simplificar /:4
= 31/25
= 1,24

B) (-1/3) : 5/24=
= -1/3 • 24/5
= -24/15 simplificar /:3
= -8/5

C) -1,2 : (-0,2) + 0,5=
= -12/10 : -2/10 + 5/10
= -12/10 • -10/2 + 5/10
= 120/20 + 5/10
= ((1•120) + (2•5))/20
= (120 + 10)/20
= 130/20 simplificar /:10
= 13/2
= 6,5

D) 1/8 •(-0,25)
= 1/8 • -25/100
= -25/800 simplificar /:25
= -1/32
= -0,03

E) 3/4 + 5/4 - 1/4
= (3 + 4 - 1)/4
= (7 - 1)/4
= 6/4 simplificar /:2
= 3/2

F) 0,555… : 1/3
= 5/9 : 1/3
= 5/9 • 3/1
= 15/9 simplificar /:3
= 5/3
= 1,66666666….

G) 2/5 • 1 1/10 : 1/5
= 2/5 • ((1•10)+1)/10 : 1/5
= 2/5 • (10+1)/10 : 1/5
= 2/5 • 11/10 : 1/5
= 22/50 : 1/5
= 22/50 • 5/1
= 110/50 simplificar /:10
= 11/5

H) -5/6 + 0,5777 • 5/4
= -5/6 + (57-5)/90 • 5/4
= -5/6 + 52/90 • 5/4
= -5/6 + (260/360) simplificar ( )/:20
= -5/6 + 13/18
= ((3•-5)+(1•13))/18
= (-15+13)/18
= -2/18 simplificar /:2
= -1/9