Question

Dau coroana si 50 de pct(25)

Answer 1

 Ex1 :
Cel mai mic = 14 * 83 = 1162
Cel mai mare = 14 * 83 + 13 = 1175
Ex2 :
Nu stiu aici
Ex3 :
a = 1+2+3+......+264+265 * 133
a = 264 ( 264 + 1)/2 + 265*133
a = 132 * 265 + 265 * 133
a = 265 * ( 132+133)
a = 265 * 265
a = 265²
Ex4:
Numerele sunt : 46 , 44 , 42 , 41 , 40 , 39,38,36,34,33,28,27,26,24,22,21,20,18,16,15,14,12,10,9,8,6,4,3,2,0
Sunt 30 de numere
Ex5 :
Numerele sunt : 22 , 33 , 44 , 55 , 66 , 77
Ex6:
a) 2x - 4,7 = 8,53
2x = 8,53 + 4,7
2x = 13,23
x = 6,615
b) 3x + 19,63 = 42,4
3x = 42,4 - 19,63
3x = 22,77
x = 7,59
c) 0,78 + 20x = 0,9
20x = 0,9 - 0,78
20x = 0,12
x = 0,006
Ex7 :
a = (28,2 - 25,8) : 12 + 9,8
a = 2,4 : 12 + 9,8
a = 0,2 + 9,8
a = 10
Ex8:
b = [ 11,2(3) - 9,(2) ] * 9 - 1/100
b = ( 1123-2/90 - 92/9 ) * 9 - 1/100
b = ( 1121/90 - 92/9 ) * 9 - 1/100
b = (1121 - 920/90 ) * 9 - 1/100
b = 201/90 * 9  - 1/100
b = 201/10 - 1/100
b = 2010 - 1 /100
b = 2009/100
b = 20,09
Ex9:
c = ( 4,56 + 16,23 - 2,39 ) : 8
c = 18,4 : 8
c = 2,3
Ex10 :
3a + 2b + c = 3 * 10 + 2 * 20,09 + 2,3 = 30 + 40,18 + 2,3 = 72,48
Ex 11:
Ma = 10+20,09+2,3/3
Ma= 32,39/3
Ma = 10,79(6)
Ex12 :
[(0,3)²]³ * x = (0,09)^4
(0,3)^5 * x = (0,09)^4
x = 1