Các câu hỏi tương tự
Tìm y (1/2+1/4+1/8+1/16):y=1/2+1/6+1/12+1/20+1/30+...+1/132
tìm x,y :
\(\frac{1}{2}-\left(6\frac{5}{9}+x-\frac{117}{8}\right):\left(12\frac{1}{9}\right)=0\)
\(\left(y+\frac{1}{3}\right)+\left(y+\frac{2}{9}\right)+\left(y+\frac{1}{27}\right)+\left(y+\frac{1}{81}\right)=\frac{56}{81}\)
<1/2+1/4+1/8+1/16> x y =1/2+1/6+1/12+1/20+........+1/132
mình đang cần liền ai nhanh mình tick
20 tháng 4 2023 lúc 20:04
1. left(y+dfrac{1}{3}right)+left(y+dfrac{1}{9}right)+left(y+dfrac{1}{27}right)+left(y+dfrac{1}{81}right)dfrac{56}{81}
2. 18:dfrac{Xx0,4+0,32}{X}+514
3. dfrac{3xX}{2}dfrac{2}{5}+X+dfrac{1}{3}
4. X-dfrac{11}{15}dfrac{3+X}{5}
Đọc tiếp
1. \(\left(y+\dfrac{1}{3}\right)\)+\(\left(y+\dfrac{1}{9}\right)\)+\(\left(y+\dfrac{1}{27}\right)\)+\(\left(y+\dfrac{1}{81}\right)\)=\(\dfrac{56}{81}\)
2. 18:\(\dfrac{Xx0,4+0,32}{X}\)+5=14
3. \(\dfrac{3xX}{2}\)=\(\dfrac{2}{5}+\)X\(+\dfrac{1}{3}\)
4. X-\(\dfrac{11}{15}\)=\(\dfrac{3+X}{5}\)
Tìm y biết: (y + 1/3) + (y + 1/9) + (y + 1/27) + (y + 1/81) = 56/81
( y +1/3) + ( y + 1/9 ) + (y+1/27) + (y+1/81)= 56/81
tìm y biết:
y + 2 × y + 3 × y + 4 × y + ... + 10 × y = 49,5
Tính nhanh :
1/2 + 1/6 + 1/12 + 1/20 + 1/30 + 1/42 + 1/56
Tim y biet :
( y + 1/3 ) + ( y + 1/9 ) + ( y + 1/27 ) + ( y + 1/81 ) = 56/81
Bài 1: Tính nhanh
a) 1/2 + 1/4 + 1/8 + 1/16 + 1/32 + 1/128 + 1/256
b) 1/3 + 1/9 + 1/27 + 1/81 + 1/243 + 1/729
c)1/2 + 1/6 + 1/12 + 1/20 + 1/30
tính bằng 2 cách
nhanh nhé