Những câu hỏi liên quan
Tìm x
a, x= (3,8)3 : (-3,8)2
b, \(\left(\frac{27}{46}\right)^9.x=\left(\frac{3}{45}\right)^{21}\)
Trả lời :
a, x = (3,8)3 - (- 3,8)2
=> x = (3,8)3 - (3,8)2
=> x = (3,8)3 - 2
=> x = 3,8
Bài làm:
a) \(x=\left(3,8\right)^3\div\left(-3,8\right)^2\)
\(\Leftrightarrow x=\left(3,8\right)^3\div\left(3,8\right)^2\)
\(\Rightarrow x=3,8\)
b) đề sai sai ý bn
a, Ta có
\(x=\left(3,8\right)^3:\left(-3,8\right)^2\)
\(=\left(3,8\right)^3:\left(3,8\right)^2\)
\(=3,8\)
Xem thêm câu trả lời
Tìm số nguyễn x biết rằng: \(\frac{3}{7}.\frac{46}{3}+\frac{3}{7}.\frac{27}{5}\le x\le\left(\frac{7}{2}:7-\frac{13}{12}\right).\left(\frac{-7}{3}\right)\)
\(\Leftrightarrow\dfrac{46}{7}+\dfrac{81}{35}< =x< =\dfrac{49}{36}\)
\(\Leftrightarrow\dfrac{311}{35}< =x< =\dfrac{49}{36}\)
\(\Leftrightarrow x\in\varnothing\)
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bài 1 : tính
a)\(\frac{-5}{13}-\left(\frac{3}{5}+\frac{3}{13}-\frac{4}{10}\right)\) b) \(\left(\frac{3}{9}-\frac{9}{18}\right)+\frac{3}{6}-\left(\frac{1}{3}-\frac{1}{2}\right)-\frac{5}{15}\) c) \(\frac{9}{18}+\frac{16}{32}-\frac{12}{46}-\frac{9}{17}\) d) \(\left(\frac{14}{18}+\frac{-16}{27}\right)-\left(\frac{2}{3}-\frac{5}{15}\right)\)
a)\(\frac{-5}{13}+\left(\frac{3}{5}+\frac{3}{13}-\frac{4}{10}\right)=\frac{-5}{13}-\frac{3}{5}-\frac{3}{13}+\frac{4}{10}=\left(\frac{-5}{13}-\frac{3}{13}\right)+\frac{4}{10}-\frac{3}{5}=\frac{-5-3}{13}+\left(\frac{4}{10}-\frac{6}{10}\right)=\frac{-8}{13}+\frac{-2}{10}=\frac{-80}{130}+\frac{-26}{130}=\frac{-106}{130}=\frac{-53}{65}\)
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\(\frac{\left(13\frac{1}{4}-2\frac{5}{27}-10\frac{5}{6}\right).230\frac{1}{25}+46\frac{3}{4}}{\left(1\frac{3}{7}+\frac{10}{3}\right):\left(12\frac{1}{3}-14\frac{2}{7}\right)}\)
\(\frac{\left(13\frac{1}{4}-2\frac{5}{27}-10\frac{5}{6}\right).230\frac{1}{25}+46\frac{3}{4}}{\left(1\frac{3}{7}+\frac{10}{3}\right):\left(12\frac{1}{3}-14\frac{2}{7}\right)}\)
\(\frac{\left(13\frac{1}{4}-2\frac{5}{27}-10\frac{5}{6}\right).230\frac{1}{5}+46\frac{3}{4}}{\left(1\frac{3}{10}+\frac{10}{3}\right):\left(12\frac{1}{3}-14\frac{2}{7}\right)}\)
\(\frac{\frac{25}{108}.\frac{1151}{5}+\frac{187}{4}}{\frac{139}{30}:\frac{-41}{21}}\)=\(\frac{\frac{5755}{108}+\frac{187}{4}}{\frac{-973}{410}}\)=\(\frac{\frac{8531}{84}}{\frac{-973}{410}}\)=-241,0180
\(\frac{\left(13\frac{1}{4}-2\frac{5}{27}-10\frac{5}{6}\right)\cdot230\frac{1}{5}+46\frac{3}{4}}{\left(1\frac{3}{10}+\frac{10}{3}\right):\left(12\frac{1}{3}-14\frac{2}{7}\right)}\)
\(=\frac{\left(\frac{53}{4}-\frac{59}{27}-\frac{65}{6}\right)\cdot\frac{1151}{5}+\frac{187}{4}}{\frac{139}{30}:\left(-\frac{41}{21}\right)}\)
\(=\frac{\frac{25}{108}\cdot\frac{1151}{5}+\frac{187}{4}}{\frac{139}{30}\cdot\left(-\frac{21}{41}\right)}=\frac{\frac{2701}{27}}{-\frac{973}{410}}\)
Tính nốt vì số dữ quá , lần sau để số ít thôi
đoạn \(\frac{8531}{\frac{34}{\frac{-973}{410}}}\)là mình nhầm nha
nó phải là\(\frac{\frac{2701}{27}}{\frac{-973}{410}}\)=-237,405
text{Thực hiện các phép tính sau:}Eleft[frac{193}{-17}left(frac{2}{193}-frac{3}{386}right)+frac{11}{34}right]:left[left(frac{7}{1931}+frac{11}{3862}right)frac{1931}{25}+frac{9}{2}right]Ffrac{left(frac{53}{4}-2frac{5}{27}-frac{65}{6}right)left(230+frac{1}{25}right)+46frac{3}{4}}{left(frac{24}{7}+3frac{1}{3}right):left(12frac{1}{3}-14frac{2}{7}right)}Gfrac{left(frac{-5}{7}-frac{7}{9}+frac{9}{11}-frac{11}{13}right)left(3-frac{3}{4}right)}{left(frac{10}{21}+frac{14}{27}-frac{6}{11}+frac{22}{39}right...
Đọc tiếp
\(\text{Thực hiện các phép tính sau:}\)
\(E=\left[\frac{193}{-17}\left(\frac{2}{193}-\frac{3}{386}\right)+\frac{11}{34}\right]:\left[\left(\frac{7}{1931}+\frac{11}{3862}\right)\frac{1931}{25}+\frac{9}{2}\right]\)
\(F=\frac{\left(\frac{53}{4}-2\frac{5}{27}-\frac{65}{6}\right)\left(230+\frac{1}{25}\right)+46\frac{3}{4}}{\left(\frac{24}{7}+3\frac{1}{3}\right):\left(12\frac{1}{3}-14\frac{2}{7}\right)}\)
\(G=\frac{\left(\frac{-5}{7}-\frac{7}{9}+\frac{9}{11}-\frac{11}{13}\right)\left(3-\frac{3}{4}\right)}{\left(\frac{10}{21}+\frac{14}{27}-\frac{6}{11}+\frac{22}{39}\right):\left(2-\frac{2}{3}\right)}\)
Các bạn giúp mk nha !!! Thanks ❤❤❤
Mong các bạn giúp mk nha ❤❤❤
\(F=\frac{\left(\frac{53}{4}-2\frac{5}{27}-\frac{65}{6}\right).\left(230+\frac{1}{25}\right)+46\frac{3}{4}}{\left(\frac{24}{7}+3\frac{1}{3}\right):\left(12\frac{1}{3}-14\frac{2}{7}\right)}\)
giúp mình nhé các bạn
\(\frac{\left(13\frac{1}{4}-2\frac{5}{27}-10\frac{5}{6}\right)\cdot230\frac{1}{5}+46\frac{3}{4}}{\frac{\left(1\frac{3}{7}+\frac{10}{3}\right)}{\left(12\frac{1}{3}-14\frac{2}{7}\right)}}\)