Question

Calculati:

Multumesc anticipat. Ofer coroana!​

Answer 1

Explicație pas cu pas:

b )

[ ( - 1/2 ) : 10-¹ + 0,04 : 10-² ]³² : [ - 0,0(3) ]² =

[ ( - 1/2 ) : 1/10¹ + 4/100 : 1/10² ]³² : ( - 3/90 )² =

[ ( - 1/2 ) • 10/1 + 4/100 • 100/1 ]³² • ( - 90/3 )² =

[ ( - 1/1 ) • 5/1 + 4/1 • 1/1 ]³² • ( - 30 )² =

( - 5/1 + 4/1 )³² • 900 =

( - 5 + 4 )³² • 900 =

( -1 )³² • 900 =

1 • 900 = 900

c )

[ ( 3/25 - 1,5 ) • 1,(6) + ( 0,1(6) + 2 4/5 ) ] : 0,(074) =

[ ( 3/25 - 15/10 ) • ( 16 - 1 )/9 + ( ( 16 - 1 )/90 + 14/5 ) ] : 74/999 =

[ ( 3/25 - 3/2 ) • 15/9 + ( 15/90 + 14/5 ) ] • 999/74 =

[ ( 6/50 - 75/50 ) • 5/3 + ( 1/6 + 14/5 ) ] • 999/74 =

[ - 69/50 • 5/3 + ( 5/30 + 84/30 ) ] • 999/74 =

( - 23/10 • 1/1 + 89/30 ) • 999/74 =

( - 23/10 + 89/30 ) • 999/74 =

( - 69/30 + 89/30 ) • 999/74 =

20/30 • 999/74 =

2/3 • 999/74 =

1/1 • 333/37 = 333/37 = 9

d )

( - 0,2 )-¹ • 10-² + 0,125 : 10-¹ - 0,1(6) • 3,6 =

( - 2/10 )-¹ • 1/10² + 125/1000 : 1/10¹ - ( 16 - 1 )/90 • 36/10 =

( - 10/2 )¹ • 1/100 + 1/8 • 10/1 - 15/90 • 36/10 =

- 5 • 1/100 + 1/4 • 5/1 - 1/1 • 3/5 =

- 1 • 1/20 + 5/4 - 3/5 =

- 1/20 + 5/4 - 3/5 =

- 1/20 + 25/20 - 12/20 =

24/20 - 12/20 = 12/20 = 3/5