Question

Ex 2 va rog Dau coroana plus 15 puncte

Answer 1

Răspuns:

Explicație pas cu pas:

0,1(6) = 15/90 = 3/18 = 1/6

√25/16 = 5/4

1/6 + 5/4 = 2/12 + 15/12 = 17/12

a = 17/3 : 17/12 = 17/3 *12/17 = 12/3 = 4

_________

2,(6) = 24/9 = 8/3

0,69(4) = (694 - 69)/900 = 625/900 = 25/36

√0,69(4) = √25/36 = 5/6

b = 8/3 + 5/6 + 3/2 = 16/6 + 5/6 + 9/6 = 30/6 = 5

__________

Mg = √a*b = √4*5 = 2√5

Ma = (a + b)/2 = (4 + 5)/2 = 9/2 = 4,5