Chương III : Thống kê
Các câu hỏi tương tự
\(\left(\frac{1}{2}-1\right).\left(\frac{1}{3}-1\right).......\left(\frac{1}{998}-1\right).\left(\frac{1}{999}-1\right)\)
1) tìm x:
a) 3(x+2)-(x+2)=0
b) (x2+1).(x+2019)=0
c) (x-3)+2x2-6x=0
2) tính :
A=\(\left|x+\frac{3}{2}\right|-\left|x-1\right|+\left|x-\frac{3}{4}\right|\)
tìm x:
(x-3)+2x2-6x=0
tính:
A=\(\left|x+\frac{3}{2}\right|-\left|x-1\right|+\left|x-\frac{3}{4}\right|\)
Tính nhanh nếu có thể:
\(\left(5+\frac{1}{5}-\frac{2}{9}\right)\)-(2-\(\frac{1}{23}\)-\(2\frac{3}{35}\)+\(\frac{5}{6}\))-(8+\(\frac{2}{7}\)-\(\frac{1}{18}\))
Ccs bạn làm nhanh giúp mk nha. Mk cảm ơn nhìu
\(\frac{5}{6}-\frac{23}{12}.x=\left(-\frac{1}{2}\right)^3\)
Tìm x biết
a,\(\frac{x-1}{x+5}\)=\(\frac{6}{7}\)
b,\(^{\left(x-\frac{1}{2^{ }}\right)^2}\)+\(\frac{2}{9}\)=\(\frac{2}{3}\)
1)Tìm x, biết :
4.left[3x-1right]+left[xright]-2.left[x-5right]+7.left[x-3right]12
left[2dfrac{1}{5}-xright]+left[x-dfrac{1}{5}right]+8dfrac{1}{5}1,2
3.left[x+4right]-left[2.x+1right]-5.left[x-3right]+left[x-9right]5
2left[x+3dfrac{1}{2}right]+left[xright]-3dfrac{1}{2}left[2dfrac{1}{5}-xright]
Đọc tiếp
1)Tìm x, biết :
\(4.\left[3x-1\right]+\left[x\right]-2.\left[x-5\right]+7.\left[x-3\right]=12\)
\(\left[2\dfrac{1}{5}-x\right]+\left[x-\dfrac{1}{5}\right]+8\dfrac{1}{5}=1,2\)
\(3.\left[x+4\right]-\left[2.x+1\right]-5.\left[x-3\right]+\left[x-9\right]=5\)
\(2\left[x+3\dfrac{1}{2}\right]+\left[x\right]-3\dfrac{1}{2}=\left[2\dfrac{1}{5}-x\right]\)
Tìm giá trị lớn nhất của biểu thức: \(\frac{1}{\left(x-1^2\right)+2}\)
Tính nhanh
\(\left(\frac{1}{4.9}+\frac{1}{9.14}+\frac{1}{14.19}+...+\frac{1}{44.49}\right).\frac{1-3-5-7-...-49}{89}\)