Ответы на вопрос:
ответ:
(3 /12 : 4 2/3 + 4 2/3 : 3 1/2) x 4 /45 = 140/1629
1) 3/13 : 4 2/3 = 3/13 • 3/14 = 9/182
2) 4 2/3 : 3 1/2 = 14/2 • 2/7 = 2
3) 9/182 + 2 = 2 9/182
4) 2 9/182 • 4/45 = 175/181 • 4/45 = 35/181 • 4/9 = 140/1629
(5 • 10^2)^2 • (17 • 10^-5)) = = 5^2 • (10^2)^2 • 17 • 10^(-5) = = 25 • 10^(2•2) • 17 • 10%(-5) = = 25 • 10^4 • 17 • 10^(-5) = = 25 • 17 • 10^4 • 10^(-5) = = 25 • 17 • 10^(4-5) = = 25 • 17 • 10^(-1) = = 25 • 17 / 10 = = 2,5 • 17 = 42,5
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