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MN
28 tháng 10 2021
38. They have worked in that company for 10 years
39. Lan can't pass the exam unless she study hard
5 tháng 3 2022
\(A=\left(4x^7y^5-4x^7y^5\right)+2xy^2-4y^2+2019\)
\(=2xy^2-4y^2+2019\)
\(=2\cdot2\cdot9-4\cdot9+2019=2019\)
25 tháng 6 2023
Sau lần 2 còn (5+5):1/2=20(kg)
Sau lần 1 còn (20+4):2/3=24*3/2=36(kg)
Trước khi bán có:
(36+3):3/4=39*4/3=52(kg)
H9
HT.Phong (9A5)
CTVHS
7 tháng 11 2023
a)
\(0,3-\dfrac{8}{3}:\dfrac{4}{3}\cdot\dfrac{1}{5}+1\\ =\dfrac{3}{10}-\dfrac{8}{3}\cdot\dfrac{3}{4}\cdot\dfrac{1}{5}+1\\ =\dfrac{3}{10}-2\cdot\dfrac{1}{5}+1\\ =\dfrac{3}{10}-\dfrac{2}{5}+1\\ =\dfrac{9}{10}\)
b)
\(\left(-\dfrac{1}{2}\right)^2-\dfrac{5}{8}:\left(0,5\right)^3-\dfrac{5}{3}\cdot\left(-6\right)\\ =\dfrac{1}{4}-\dfrac{5}{8}:\dfrac{1}{8}+\dfrac{5}{3}\cdot6\\ =\dfrac{1}{4}-\dfrac{5}{8}\cdot8+10\\ =\dfrac{1}{4}-5+10\\ =\dfrac{21}{4}\)
c)
\(2+4:\left(\dfrac{2}{3}-\dfrac{1}{6}\right)\cdot\left(-2,25\right)\\ =2+4:\dfrac{1}{2}\cdot\left(-2,25\right)\\ =2+8\cdot\left(-2,25\right)\\ =2-18\\ =-16\)
d)
\(\left(2\dfrac{5}{6}+1\dfrac{4}{9}\right):\left(10\dfrac{1}{12}-9\dfrac{1}{2}\right)\\ =\left(2+\dfrac{5}{6}+1+\dfrac{4}{9}\right):\left(10+\dfrac{1}{12}-9-\dfrac{1}{2}\right)\\ =\left(3+\dfrac{23}{18}\right):\left(1-\dfrac{5}{12}\right)\\ =\dfrac{77}{18}:\dfrac{7}{12}\\ =\dfrac{22}{3}\)
The coffee is too hot to drink
The coat is too short to wear
The food was too hot to eat
This exercise is too difficult to do
The suitcase is too heavy to carry it upstairs