1)4200 • 90 = 378000
2)640 • 500 = 320000
3)23480 • 30 = 704400
4)7810 • 700 = 5467000
5)6290 • 800 = 503200
6)43400 • 200 = 8680000
16 + 6 = 22 (грибов)
Ответ: 22.
4) y=15x²+16x-5
y'=30x+16
5) 0 0
∫ x³dx = x^4/4 | = 0-(16/4)=0-4=-4
-2 -2
X=1/9+1/6
x=2/18+3/18
x=5/18