Question

va rog ajutatima de la 3 in jos repede

Answer 1

Le voi lua pe rand
La exercițiul 3 este așa:

a) (7+6+8+9):4 = 30:4 (simplifici cu 2) = 15:2 = 7,5

b) (5+7+7+8):4 = 27:4 = 6,75

c) (9+8+7+5):4 = 29:4 = 7,25

d) (6+4+7+8):4 = 25:4 = 6,25

vin cu rezolvări si la următoarele

La exercițiul 4:

a) (7/2+3/4)÷2 = 17/4 × 1/2 = 17/8 = 2,125

b) (5/6+7/4):2 = 31/12 × 1/2 = 31/24 = 1,29167

c) (1/6+8/9):2 = 19/18 × 1/2 = 19/36 = 0.527778

d) (4/5+9/4):2 = 61/20 × 1/2 = 61/40 = 1,525

La exercițiul 5:

a) (5,5+4,5)2 = 10:2 = 5

b) (2,8+6,2):2 = 9:2 = 4,5

c) (8,7+5,3):2 = 14:2 = 7

d) (1,6+9,4):2 = 11:2 = 5,5

e) (1,(3)+0,75):2 = (12/9+3/4):2 = 25/12 × 1/2 = 25/24 = 1,04167

f) (1,25+2,(6)):2 = (5/4+24/9):2= 47/12 × 1/2 = 47/24 = 1,95833

g) (0,8 (3)+1,2):2 = (75/90+6/5):2 = 61/30 × 1/2 = 61/60 = 1,01667

h) (3,5+0,2 (7)):2 = (7/2+25/90):2 = 34/9 × 1/2 = 17/9 = 1,(8)