Question

 thoi gian giai 1 bai giai 1 bai toan cua 35 hs duoc ghi lai trong bang sau ( tinh theo phut)

3	10	7	8	10	9	6	4	8	7	8	10	9	5	8	8	6	6	8	8	8	7	6	10
5	8	7	8	8	4	10	5	4	7

a) dau hieu o day la gi .So cac gia tri la bao nhieu                                                                                                                                       b) lap bang tan so va rut ra nhan xet                    (ai lam dung danh 1 tick) 

Answer 1

bai....................kho......................wa.....................troi.........................thi.................lanh...............lai....................mua...................tich....................ung.....................ho..................minh....................nha.......................huhu

Answer 2

x = ?............

Answer 3

\(\frac{x+2}{327}+1+\frac{x+3}{326}+1+\frac{x+4}{325}+1+\frac{x+5}{324}+1+\frac{x+329}{5}-4=0\)

\(\frac{x+329}{327}+\frac{x+329}{326}+\frac{x+329}{325}+\frac{x+329}{324}+\frac{x+329}{5}=0\)

\(\left(x+329\right)\left(\frac{1}{327}+\frac{1}{326}+\frac{1}{325}+\frac{1}{324}+\frac{1}{5}\right)=0\)

mà \(\left(\frac{1}{327}+\frac{1}{326}+\frac{1}{325}+\frac{1}{324}+\frac{1}{5}\right)\ne0\)

=> x +329 = 0 

,<=> x = -329

Answer 4

-329