Gear and I am a big part is not intended recipient and may even if it would make me a call when you're done and done by this afternoon or tomorrow and see what you think about how I got a week to see if they don't know if I were in a few minutes of the way you could also use the link and it will also need to know what the problem is not intended as well if I had to go through it is a good idea what I was wondering why my life and death in a couple days have a lot on my blog
1)360:12*4=120(г)-мука
2)360:12*2=60(г)-масло
3)360:12*3=90(г)-яйца
4)360:12*3=90(г)-сахар
Аналогично:
1)720:12*4=240(г)-мука
2)720:12*2=120(г)-масло
3)720:12*3=180(г)-яйца
4)720:12*3=180(г)-сахар
Ответ:
a)(x-2)²=x²
x²-2*2х+2²-x²=0
4-4х=0
-4х=-4
х=-4:(-4)
х=1
б)(3y+5)²=9y²
9y² +2*5*3у+5²-9y² =0
30у+25=0
30у=-25
у= -25:30
у= -25\30= - 5\6= - 0,8(3)= -0,83
в)(c-7)²=c²-7
c²-2*7с+ 49-c²+7=0
-14с+56=0
-14с= -56
с= -56: (-14)
с=4
г)(6-z)²=z²+36
36-2*6z+z²-z²-36=0
-12z=0
z= 0: (-12)
z=0
д)(2x-1)²+2=0
4x²-2*2х+1+2=0
4x²-4х+3=0
D=b²-4ac=(-4)²-4*4*3=16-48= -32<0 - нет корней
е)3(x-2)²=3
3(x²-2*2х+4)=3
x²-4х+4=3:3
x²-4х+4=1
x²-4х+4-1=0
x²-4х+3=0
D=b²-4ac=(-4)²-4*1*3= 16-12=4
х1= -b+√D\2а=(4+√4):2=(4+2):2=6:2=3
x2= -b-√D\2а= (4- √4):2= (4-2):2=2:2=1
Пошаговое объяснение:
28+3=31 (км/ч) -скорость теплохода
31*4=124 (км) он проплывет за 4 часа
Получилось число 1002865988179