Question

me ajude gente por favor é serio preciso disso eu estudo no governo estadual me ajudem

Answer 1

Ola Linda

04)

(1/5)^-2 *(2/3)^3 + 3^-2*3^5 

25*8/27 + 27 = 140/27 + 27 

(200 + 27*27)/27 = 929/27 

05) 

x = √(1/4) + √(1/9)/(2/3) 
x = 1/2 + 1/3*3/2 = 1/2 + 1/2 = 1

y = (21/40)° = 1

x - y = 1 - 1 = 0

06)

a)

5 - 4/9*3/5 = 5 - 4/15 = (75 - 4)/15 = 71/15 

b)

(2/5 + 1/2)*(2/9) + 3/20)/(7/6)

((9/10)*(2/9) + 3/20)*6/7 = (4/20 + 3/20)*(6/7) 

(7/20)*(6/7) = 6/20 = 3/10