1) 103,5 см³ (abc 4,5*2,3*10)
2)116,25 дм³ (abc 3,1*1,5*2,5)
это задача на логику так и пишем
8дн-8 кур-16 яиц
8дн-1 кур-2 яица
4дн-1 кур-1 яйцо
4дн-4 кур -4 яйца
Ответ 4яйца
X²+6x-16=0
D=36-4·(-16)=36+64=100
x1=_-6+10_=_4_=2
2 2
x2=_-6-10_= _-16_= -8.
2 2
(3,5-3,375)*24+11/8/(-15/4)=0,125*24-11/30=3-11/30=2 30/30-11/30=2 19/30
5+4y
1) 5+4*3 = 5+12 = 17
2) 5+4*(-7) = 5+(-28) = -23
3) 5+4*0,25 = 5+1 = 6
4) ![5+4*(-\frac{4}{3}) = 5+\frac{4}{1} * \frac{4}{3} = \frac{16}{3} = (-5\frac{1}{3}) = 5-5\frac{1}{3} = -\frac{1}{3}](https://tex.z-dn.net/?f=5%2B4%2A%28-%5Cfrac%7B4%7D%7B3%7D%29+%3D+5%2B%5Cfrac%7B4%7D%7B1%7D+%2A+%5Cfrac%7B4%7D%7B3%7D+%3D+%5Cfrac%7B16%7D%7B3%7D+%3D+%28-5%5Cfrac%7B1%7D%7B3%7D%29+%3D+5-5%5Cfrac%7B1%7D%7B3%7D+%3D+-%5Cfrac%7B1%7D%7B3%7D)
5) 5+4*
= 5+
= 5+(-
) = ![5 + (-\frac{2}{21}) = 4\frac{21}{21} + (-\frac{2}{21}) = 4\frac{19}{21}](https://tex.z-dn.net/?f=5+%2B+%28-%5Cfrac%7B2%7D%7B21%7D%29+%3D+4%5Cfrac%7B21%7D%7B21%7D+%2B+%28-%5Cfrac%7B2%7D%7B21%7D%29+%3D+4%5Cfrac%7B19%7D%7B21%7D)