\(\frac{\left(1,09-0,29\right)x\frac{5}{4}}{\left(18,9-16,65\right)x\frac{8}{9}}\)
Những câu hỏi liên quan
\(choA=\left[0,8.7+\left(0,8\right)^2\right]. \left(1,25.7-\frac{4}{5}.1,25\right)+31,64\)
\(B=\frac{\left(1,09-0,29\right).\frac{5}{4}}{\left(18,9-16,65\right).\frac{8}{9}}\)
Hỏi A gấp mấy lần B ?
bài 2:tính xem A gấp mấy lần B:
A=\(\frac{\left[0,8.7+0,8^2\right]}{\left(1,25.7-\frac{4}{5}.1,25\right)+31,64}\)
B=\(\frac{\left(1,09-0,29\right).\frac{5}{4}}{\left(18,9-16,65\right).\frac{8}{9}}\)
\(A=\frac{0,87.7+0,8^2}{\left(1,25.7-\frac{4}{5}.1,25\right)+31,64}\)
\(A=\frac{0,87\left(7+0,8\right)}{\left[1,25\left(7-\frac{4}{5}\right)\right]+31,64}\)
\(A=\frac{6,786}{7,75+31,64}\)
\(A=\frac{87}{505}\)
\(B=\frac{\left(1,09-0,29\right).\frac{5}{4}}{\left(18,9-16,65\right).\frac{8}{9}}\)
\(B=\frac{0,8.\frac{5}{4}}{2,25.\frac{8}{9}}\)
\(B=\frac{1}{2}\)
A gấp B số lần là:\(\frac{87}{505}:\frac{1}{2}=\frac{174}{505}\)
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Cho A = \(\left[0,8.7+\left(0,8\right)^2\right]\left(1,25.7-\frac{4}{5}.1,25\right)+31,64\)
B = \(\frac{\left(1,09-0,29\right).\frac{5}{4}}{\left(18,9-16,65\right).\frac{8}{9}}\)
Hỏi A gấp B bao nhiêu lần?
Cho \(M=\left[0,8.7+\left(0,8\right)^2\right].\left(1,25.7-\frac{4}{5}.125\right)+31,64\)
\(B=\frac{\left(1,09-0,29\right).\frac{5}{4}}{\left(18,9-16,65\right).\frac{8}{9}}\)
Hỏi: M gấp mấy lần B
Ta có
\(M=\left[0,8\times7+\left(0,8\right)^2\right]\times\left(1,25\times7-\frac{4}{5}\times125\right)+31,64\):\(M=\left[\frac{28}{5}+\frac{16}{25}\right]\times\left(\frac{35}{4}-1\right)+31,64\)\(=\frac{156}{25}\times\frac{31}{4}+31,64\)\(=48,36+31,64=80\)
và \(B=\frac{\left(1,09-0,29\right)\times\frac{5}{4}}{\left(18,9-16,65\right)\times\frac{8}{9}}=\frac{\frac{4}{5}\times\frac{5}{4}}{\frac{9}{4}\times\frac{8}{9}}=\frac{1}{2}=0,5\)
M gấp: \(80:0,5=160\)lần B
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cho: A= [ 0,8.7+(0,8)^2] . (1,25.7 - 4/5 . 1,25) + 31,64,.
B=\(\frac{\text{(1,09-0,29) .5/4}}{\frac{\left(18,9-16,65\right).\frac{8}{9}}{ }}\)Hỏi A gấp mấy lần B
CHO A = ( 0,8.7+ (0,8)\(^2\) )( 1,25 .7 -\(\frac{4}{5}\) . 1.25 ) + 31.64
B = \(\frac{\left(1,09-0,29\right).\frac{5}{4}}{\left(18,9-16,65\right).\frac{8}{9}}\)
HOI A GAP MAY LAN B ???
Tính A = [ \(0,8.7+\left(0,8\right)^2\)] [\(1,25.7-\frac{4}{5}.1,25\)] + 31,64
B = \(\frac{\left(1,09-0,29\right).\frac{5}{4}}{\left(18,9-16,65\right).\frac{8}{9}}\)
Hỏi A gấp mấy lần B
tínhB=\(\frac{\left(1,09-0,29\right).1\frac{1}{4}}{\left(18,9-16\frac{13}{20}\right).\frac{8}{9}}\)
\(B=\frac{\left(1,09-0,29\right).1\frac{1}{4}}{\left(18,9-16\frac{13}{20}\right).\frac{8}{9}}=\frac{0,8.\frac{5}{4}}{\left[\left(18+0,9\right)-\left(16+\frac{13}{20}\right)\right].\frac{8}{9}}\)
\(B=\frac{\frac{4}{5}.\frac{5}{4}}{\left(18+\frac{9}{10}-16-\frac{13}{20}\right).\frac{8}{9}}\)
\(B=\frac{1}{\left[\left(18-16\right)+\left(\frac{9}{10}-\frac{13}{20}\right)\right].\frac{8}{9}}\)
\(B=\frac{1}{\left(2+\frac{1}{4}\right).\frac{8}{9}}\)
\(B=\frac{1}{\frac{9}{4}.\frac{8}{9}}=\frac{1}{2}\)
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Tính giá trị của biểu thức:
\(Y=\frac{\left(1,09-0,29\right)x1\frac{1}{4}}{\left(18,9-16\frac{13}{20}\right)x\frac{8}{9}}+\frac{\left(11,81+8,19\right)x0,02}{9:11,25}\)
Ghi cách giải ra nha!