Question

Tinh gia tri cua bieu thuc

A = \(\frac{55}{11.16}\)+\(\frac{55}{16.21}\)+\(\frac{55}{21.26}\)+\(\frac{55}{26.31}\)+\(\frac{55}{31.36}\)+\(\frac{55}{36.41}\)

Answer 1

30/41                                   

Answer 2

bằng 30/41

Answer 3

cach lam, ket qua sai

Answer 4

minh noi nham

Answer 5

\(A=11\left(\frac{5}{11.16}+\frac{5}{16.21}+\frac{5}{21.26}+\frac{5}{26.31}+\frac{5}{31.36}+\frac{5}{36.41}\right)\)

   \(=11\left(\frac{1}{11}-\frac{1}{16}+\frac{1}{16}-\frac{1}{21}+\frac{1}{21}-\frac{1}{26}+\frac{1}{26}-\frac{1}{31}+\frac{1}{31}-\frac{1}{36}+\frac{1}{36}-\frac{1}{41}\right)\)

\(=11\left(\frac{1}{11}-\frac{1}{41}\right)=11\left(\frac{41}{451}-\frac{11}{451}\right)=11.\frac{30}{451}=\frac{330}{451}=\frac{30}{41}\)

Answer 6

A= 55/11 -55/41 = 5-55/41 = 150/41

Answer 7

trả lời:

= 30/41

học tốt!

Answer 8

bạn tham khảo ở đây nhé

https://olm.vn/hoi-dap/detail/81377996496.html

đáp án đúng là 30/41

hok tốt