Tiền lãi một tháng là:(2062400-2000000):6=10400(đồng)

Lãi suất hàng tháng là:10400.100%:2000000=0,52%

a) \(0,\left(3\right)+3\dfrac{1}{2}+0,4\left(2\right)\)=\(\dfrac{1}{3}+\dfrac{7}{2}+\dfrac{19}{45}\)=\(\dfrac{383}{90}\)

b)\(\dfrac{4}{9}+1,2\left(31\right)-0,\left(13\right)\)=\(\dfrac{4}{9}+\dfrac{1219}{990}-\dfrac{13}{99}\)=\(\dfrac{139}{90}\)

a)Ta có:

m=\(\sqrt{34}\) và n=\(8\)=\(\sqrt{64}\)

vì 34<64 nên m<n

b) Ta có:

y=\(\sqrt{33}\) và z= 6 = \(\sqrt{36}\)

vì 33<36 nên y<z

a)A=\(\sqrt{36.}\left(3\sqrt{4}-\sqrt{\dfrac{1}{9}}\right)+2\)=\(6.\left(6-\dfrac{1}{3}\right)+2\)=\(6.\dfrac{17}{3}+2\)=\(34+2\)=\(36\)

b)B=\(\sqrt{\dfrac{1}{9}+\dfrac{1}{16}}\)=\(\sqrt{\dfrac{25}{144}}\)=\(\dfrac{5}{12}\)

c)C=\(\left(\sqrt{\dfrac{1}{9}}+\sqrt{\dfrac{25}{36}}-\sqrt{\dfrac{49}{81}}\right):\sqrt{\dfrac{441}{324}}\)=\(\left(\dfrac{1}{3}+\dfrac{5}{6}+\dfrac{7}{9}\right)\):\(\dfrac{7}{6}\)=\(\dfrac{35}{18}:\dfrac{7}{6}\)=\(\dfrac{5}{3}\)

d)D=\(\sqrt{\left(\dfrac{-2}{5}\right)^2}+\sqrt{1,44}-\sqrt{256}\)=\(\dfrac{2}{5}+\dfrac{6}{5}-16\)=\(\dfrac{8}{5}-16\)=\(\dfrac{-72}{5}\)