1) 20 - 10 + 8 = 18 человек - стало
2) 20 - 18 = 2 человека
Ответ: на 2 человека
5/24 + 11/60 + 13/60 +1/24 =
=(5/24+1/24) + (11/60+13/60)=
=6/24+24/60 =
= 6*5/24*5 + 24*2/60*2=
=30/120+48/120= 78/120= 39/60
НОК (24,60)= 2*2*2*3*5=120
24= 4*6=2*2*2*3
60= 6*10=2*3*2*5
Y`=(-x²-324+2x²)/(x²+324)²=(x²-324)/(x²+324)²=0
(x-18)(x+18)=0
x=18 x=-18
+ _ +
-----------(-18)-----------(18)-----------------
min
y(18)=-18/648=-1/36
<em><span>625*217/25*(288/9-14)= 97650</span></em>
<em><span>1) 288 : 9 = 32</span></em>
<em><span>2) 32 -14 =18</span></em>
<em><span>3) 625 х 217 =135625</span></em>
<em><span>4) 135625 : 25 =5425</span></em>
<em><span>5) 5425 х 18 = 97650</span></em>