4/25 + 4,84 + (-6,04)= 2) -48 17/35 + (11 4/35 - 18 61/70=0,871
1/3 - 1 = 1/4 * (х + 4/5)
- 2/3 = 1/4х + 1/5
-2/3 - 1/5 = 1/4 *х
х/4 = - 10/15 - 3/15
х/4 = - 13/15
х = (- 13/15) * 4
х = - 52/15 = - 3 7/15
Локоть=<span>46-47 см
</span>ладонь+1\6 локтя
<span>6 cos в квадрате +5cos+1=0
6</span> cos²<span>x +5cosx+1=0
6t</span>²+5t+1=0
t1=[-5-√(25-24)]/12=-1/2 cosx =-1/2 x1=π-π/3+2πn=2π/3+2πn, n∈Z
x2=-(π-π/3)+2πn=-2π/3+2πn, n∈Z
t2=[-5+√(25-24)]/12=-1/3 cosx =-1/2 x1=π-arccos(1/3)+2πn, n∈Z
x2=-(π-arccos(1/3))+2πn, n∈Z