5√(х+6)=х
25х+150=х^2
х^2-25х-150=0
D=1225
х=(25+35)/2=30
9/37 примерно 0,24
1 3/28 примерно 1,11
1 кг=1000 г.
1000:100=10 - раз больше.
1 ц=100 кг
1 т=1000 кг
1000:100=10 - раз меньше.
1 ц=100 кг
100:10=10 - раз больше
2/5 : 1/3 = 2/5 * 3 = 6/5 = 6 : 5
4/7 : 1/2 = 4/7 * 2 = 8/7 = 8 : 7
5/6 : 3/8 = 5/6 * 8/3 = (5*4)/(3*3) = 20/9 = 20 : 9
3 1/9 : 2 1/6 = 28/9 : 13/6 = 28/9 * 6/13 = (28*2)/(3*13) = 56/39 = 56 : 39
1 5/12 : 2/15 = 17/12 * 15/2 = (17*5)/(4*2) = 85/8 = 85 : 8
1/8 : 1 7/12 = 1/8 : 19/12 = 1/8 * 12/19 = (1*3)/(2*19) = 3/38 = 3 : 38
Ответ:
Пошаговое объяснение:
1) -9.4+6.8 = -2.6
2)14.3+(-8.7) = 14.3-8.7 = 5.6
3) -2.8+(-7.6) = -2.8-7.6 = -10.4
4) 4.7+(-4.7) = 4.7-4.7 = 0
5) 3.8-4.4 = -0.6
6) -16.7-5.5 = -22.2
7) -2.2-(-15.1) = -2.2+15.1 = 12.9
1) 9+x=5
x=5-9
x=-4
2) -33-y = -19
-y = -19+33
-y = 14
y = -14