1dm3=1000 cm3
\(\Rightarrow\dfrac{3}{4}dm^3=750cm^3\) \(\left(1000\times\dfrac{3}{4}=750\right)cm^3\)
1dm3=1000 cm3
\(\Rightarrow\dfrac{3}{4}dm^3=750cm^3\) \(\left(1000\times\dfrac{3}{4}=750\right)cm^3\)
\(C=\left(\dfrac{4}{1\cdot3}\right)+\left(\dfrac{4}{3\cdot5}\right)+...+\left(\dfrac{4}{97\cdot99}\right)-\dfrac{5}{11\cdot12}-\dfrac{5}{12\cdot13}-...-\dfrac{5}{98\cdot99}\)
ok, giải nhanh cho mk nha
tìm x:
4(x-1) - 3(x+2) = 3(x-4) - 2(2x + 1)
các bn giúp mk nhanh nha❤️ ❤️ ❤️
BT2: Tính nhanh
9) \(\dfrac{98}{99}+\dfrac{89}{100}+\dfrac{100}{101}.\left(\dfrac{1}{12}-\dfrac{1}{3}+\dfrac{1}{4}\right)\)
10) \(\left(\dfrac{78}{79}+\dfrac{79}{80}+\dfrac{80}{81}\right).\left(\dfrac{1}{5}+\dfrac{1}{6}+\dfrac{3}{10}-\dfrac{2}{3}\right)\)
Giúp mk nha!
BT2: Tính nhanh
3) \(\dfrac{2}{3}-\left(-\dfrac{1}{4}\right)+\dfrac{3}{5}-\dfrac{7}{45}-\left(-\dfrac{5}{9}\right)+\dfrac{1}{12}+\dfrac{1}{90}\)
4) B = \(\dfrac{1}{3}-\dfrac{3}{4}-\left(-\dfrac{3}{5}\right)+\dfrac{1}{64}-\dfrac{2}{9}-\dfrac{1}{36}+\dfrac{1}{15}\)
Giúp mk nhé các bạn!
Tính :
A=\(\dfrac{4}{3}.\dfrac{9}{8}.\dfrac{16}{15}.....\dfrac{100}{99}\)
Ai làm nhanh và đúng mk sẽ tk cho!!!Làm giúp mk!!!!! HELP ME!!!!
1 TÍNH NHANH
A=2/5 : 3/4 + 2/5 . 3/6 + 2/5
B=5/21 . 4/11 +7/11 . 5/21 -2/3G
Giúp mk tí nha mn , mk cần gấp lắm
Thực hiện phép tính( hợp lí nếu có thể)
\(\dfrac{1}{2}+\dfrac{3}{4}-\left(\dfrac{3}{4}-\dfrac{4}{5}\right)\)
\(\dfrac{-3}{7}+\dfrac{3}{4}:\dfrac{3}{14}\)
\(5-\dfrac{7}{39}:\dfrac{7}{13}+\dfrac{8}{9}:4\)
\(1\dfrac{13}{15}.0,75-\left(\dfrac{11}{20}+25\%\right):\dfrac{7}{3}\)
\(\left(\dfrac{5}{12}:\dfrac{11}{6}+\dfrac{5}{12}:\dfrac{11}{5}\right)--\dfrac{7}{12}\)
làm nhanh cho mình nha!!!!Thank nhìu
BT1: Tính nhanh
3) \(\dfrac{1}{2}-\dfrac{3}{2}.\left(\dfrac{1}{2}-\dfrac{1}{3}\right)+\left(\dfrac{-3}{-2^3}\right)\)
4) \(\dfrac{1}{12}.\dfrac{37}{39}+\dfrac{1}{12}.\dfrac{2}{39}+\dfrac{1}{4}\)
Các bạn giải dùm mk nha
3/4 -2.[2x-0,125]=2
Giải nhanh dùm mk nha