<span>1) 112 х4 =448 см периметр квадрата</span>
<span>0,78:(−2,6)=0,3
-(0,78/ 2,6)
-0,3</span>
1312. 1)52.17, 521.7
2)31.62, 3.162
3)72850, 728500
4)0.09342, 0.009342
1313
1)1.03
2)137
3)65
4)754.9
5)215
6)807.1
7)3546300
8)12700
9)6304
1315
1)1.723
2)10.216
3)0.825
4)3.1042
5)0.195
6)0.039
7)5.61352
8)0.4129
9)0.063132
Координати центра:
x = 3, y = -6, radius = 3.
<span>16 с + 20=7 с + 74</span>
<span>16с-7с=74-20</span>
<span>9с=54</span>
<span>с=54:9</span>
<span>с=6</span>
<span>Ответ:6</span>
<span>Проверка:</span>
<span>16*6+20=7*6+74</span>
<span>116=116</span>