2km-300m+4m-30cm=170370cm.

0. Who have the worst accident records of all?

A. Young men

B. Young women

C. Old men

D. Inexperienced men

1. According to the survey, who are the most likely to have an accident?

A. Young and inexperienced drivers.

B.Old and inexperienced drivers.

C. Young and old drivers.

D. Old and experienced drivers.

2. Young men are likely to choose ___________

A. expensive cars

B. fast cars with big engines

C. slow cars with big engines

D. fast cars with small engines

3. Who have an effect on the driver?

A. Parents

B. Policeman

C. Families

D. Passengers

4. When young male drivers have their wife or girlfriend in the car, thay drive ___________.

A. worse

B. more carefullyr

C. better

D. faster

5. If a child of a woman is in the car, how is the woman sdriving?

A. it's better

B. it's worse

C. it stays the same

D. it's nicer

6. The word 'they' in bold in the last sentence refers to _____________.

A. women

B. husbands

C. boyfriends

D. small children

Vì 

\(\left|x-2\right|\ge0\)

\(\left(y+2x\right)^2\ge0\)

\(\left|z+y\right|\ge0\)

\(\Rightarrow\left|x-2\right|+\left(y+2x\right)^2+\left|z+y\right|\ge0\)

Dấu "=" xảy ra khi \(\hept{\begin{cases}\left|x-2\right|=0\\\left(y+2x\right)^2=0\\\left|z+x\right|=0\end{cases}}\)

=> x = 2

<=> ( y + 2.2 )² = 0

=> y + 4 = 0

=> y = - 4

<=> |z + ( - 4 )|= 0

<=> z = 4

Vậy x = 2; y = - 4 ; z = 4

mk nhầm nha bây giờ mk giải lại nhé

khi viết thêm chữ số 2 vào bên trái số đó thì số mới hơn số cần tìm 2000

số cần tìm là

               2000:(9-1)=250 

                         Đ/S:250

710.20 - 697.89 - 8.20

= 4.11

tk mk tk lại

5411 + 5494 = 10905.

Kích mình nha!!!