(3,2*2,5)+6,04=14,04
16,7-(3,5*1,08)=12,92
12,108+(6,28*5,05)=43,822
<span>3(12,85+10,9)=71,25 </span>
Ответ:
Пошаговое объяснение:
9÷(3 11/21 +1 5/6 +9 9/14 -13 1/6 -1/3)·3 1/4=9÷(3 22/42 +9 27/42 +1 5/6 -12 7/6 -2/6)·13/4=9·13/(4·(12 49/42 -11 2/3)=9·13/(4·(12 49/42 -11 28/42)=9·13/(4·1 3/6)=9·13/(4·3/2)=9·13/(2·3)=3·13/2=39/2=19,5
65 43/110 -1/5 ·29 5/6 -4 14/33 +25 3/5 ÷32·10 5/6=65 43/110 -1/5 ·179/6 -4 14/33 +128/5 ·1/32 ·65/6=65 43/110 -5 29/30 -4 14/33 +4·13/6=65 129/330 -5 319/330 -4 140/330 +8 2/3=64 459/330 -9 459/330 +8 2/3=55+8 2/3=63 2/3
4 -1/2 ·5 1/2 +33/140 ·(33/52 +1 19/52)÷(3/5)+19 5/7=4 -1/2 ·11/2 +33/140 ·2·5/3 +19 5/7=3 4/4 -2 3/4 +11/14 +19 10/14=1 1/4 +20 1/2=1 1/4 +20 2/4=21 3/4=21,75
850*4=3400 км
850+150=1000 км/ч
3400:1000=3,4 ч
3,4=3 часа 24 мин
126 и 210
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1,(3у²+х)² 2. (к²+х)² 3.в(m-к)²=1/8(5,79-1,79)²=1/8*4²=1/8*16=2