mẫu \(\frac{4}{7}\) của một số bằng 20. Số đó là 20 : \(\frac{4}{7}\)=\(\frac{20.7}{4}\) = 35
nhìn mẫu và làm theo
\(\frac{5}{11}\) của một số bằng 35. Số đó là..............................
\(\frac{-4}{25}\) của motjsoos bằng 8 . Số đó là.................
Giúp mình với:
M=\(\frac{1}{1^2}\)+\(\frac{1}{2^2}\)+\(\frac{1}{3^2}\)+...+\(\frac{1}{9^2}\)+\(\frac{1}{10^2}\). Hãy so sánh M với\(\frac{4}{3}\).
Tìm x:\(\frac{1}{5.8}\)+\(\frac{1}{8.11}\)+\(\frac{1}{11.14}\)+...+\(\frac{1}{x\left(x+3\right)}\)=\(\frac{101}{1504}\)
\(\frac{1}{3}+\frac{1}{3^2}+....+\frac{1}{3^{100}}\)
Mr Pike______ English at our school for 20 years before he retired last year.
A. was teaching
B. has been teaching
C.is teaching
D. had been teaching
Tìm hộ mình lỗi sai trong 2 câu này nhé
1.
The kangaroo travels at speeds up to 20 miles a hour by jumping on their
powerful hind legs.
2. I go to Singapore by
plane.
có ai on ko nc đi chán quá ak
Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions from 20 to 21.
A. beat
B. cleanse
C. please
D. treat
Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions from 20 to 21.
A. leaves
B. coughs
C. hires
D. brings