Question

ambele ex va rog mult, dau si coroana
daca vreti si 5 :)) (optional)​

Answer 1

Răspuns:

√18 < n < √71

n∈N

√18≈4,24

√71≈8,42

n=5=>√18 < √25 < √71

n=6=>√18 < √36 < √71

n=7=>√18 < √49 < √71

n=8=>√18 < √64 < √71

n∈{5,6,7,8}=>card A=4

raspuns b

______________

A={x∈N I 16 < x < 56}

M₈={0,8,16,24,32,40,48,56...}

8×0 = 0

8×1 = 8

8×2 = 16

8×3 = 24

8×4 = 32

8×5 = 40

8×6 = 48

8×7 = 56

16 < 24,32,40,48 < 56

Raspunsul corect a fost dat de Sofia

____________

(6a/10)⁽²=(75b/10)⁽²⁵

p%×a=b=>p/100×a=b

3a/5=3b/4=>15p/100=12=>p=1200:15=>p=80

raspuns a