Отнимается 2 потом прибавляется 3
2sin² x-9sin x+4=0
sinx= t
2t²-9t+4=0
D=81-4*4*2=81-32=49
t1=9+7/4=16/4=4
t2=9-7/4=2/4=1/2
t1 не подходит т.к. 4>1
sin x =1/2
x =(-1)^k arcsin 1/2 + pi k
x =(-1)^k pi/6 + pi k, k€Z
<span>1,246ц=1.246*100=124.6 кг
</span>
<span>15ц=1500</span>
<span>152,45т=152.45*1000=152450</span>
<span>
</span>
<span>238г=0.238</span>
<span>
</span>
<span>12,46ц=1246</span>
<span>1,5245т=1524.5</span>
<span>0,0485т=48.5</span>
<span>
</span>
<span>45г=0.045</span>
<span>
</span>
<span>124,6ц=12460 </span>
<span>15,245т=15245</span>
<span>
</span>
<span>7548г=7.548</span>
<span>5г=0.005</span>
<span>(276 318:903)*(10 000-8492)-61448=
1) 276 318/903 = 306
2) 10 000 - 8492 = 1508
3) 306 * 1508 = 461 448
4) </span>461 448 - 61 448 = 400 000
Ответ: 400 000