\(=-\frac{3}{4}+\frac{6}{5}-\left(\frac{-1}{8}\right)\))

=\(-\frac{3}{4}+\frac{6}{5}+\frac{1}{8}\)

=\(\frac{9}{20}+\frac{1}{8}\)

=\(\frac{23}{40}\)

Vậy..........

\(\frac{75}{100}-1\frac{1}{2}+0,5:\frac{5}{12}-\left(-\frac{1}{2}\right)^3\)

= \(\frac{3}{4}-\frac{3}{2}+\frac{6}{5}+\frac{1}{8}\)

= \(\frac{30}{40}-\frac{60}{40}+\frac{48}{40}+\frac{5}{40}\)

= \(\frac{23}{40}\)

bức tranh của em gái tôi thuộc thể loại truyện ngắn nhé bn

Bức Tranh Của Em Gái Tôi thuộc thể loại gì

Trả lời : 

Truyện ngắn

\(\frac{26-x}{995}\)+2+\(\frac{22-x}{997}\)+\(\frac{18-x}{999}\)+2=\(\frac{12-x}{334}\)+6

\(\frac{2016-x}{995.2}\)+\(\frac{2016-x}{997.2}\)+\(\frac{2016-x}{999.2}\)-\(\frac{2016-x}{334.6}\)=0

(2016-x)(\(\frac{1}{995.2}\)+\(\frac{1}{997.2}\)\(\frac{1}{999.2}\)-\(\frac{1}{334.6}\))=0

Dễ thấy giá trị biểu thức trong ngoặc thứ 2 khác 0

Nên 2016-x=0=>x=2016

Vậy giá trị của x là 2016

Chứng minh cái gì ???

Chứng minh 1/101 + 1/102 + ... + 1/299 + 1/300 > 2/3
Ta có:
1/101>1/300
1/102>1/300
.....
1/299>1/300
=>VT>200.1/300=200/300=2/3(dpcm)

Chứng minh 1/101 + 1/102 + ... + 1/299 + 1/300 > 2/3
Ta có: 1/101> 1/300; 1/102> 1/300; .....; 1/300= 1/300
1/101 + 1/102 + ... + 1/299 + 1/300 > 1/300+ 1/300+ .........+1/300= 200/300= 2/3
Vậy 1/101 + 1/102 + ... + 1/299 + 1/300 > 2/3 (dpcm)

Nhầm là lp 5 ms đúng

đoeị mk tí

\(\left(3\frac{1}{4}-x\right).1\frac{1}{4}=-1+\frac{1}{20}\)

\(\Leftrightarrow\left(\frac{13}{4}-x\right).\frac{5}{4}=\frac{-20}{20}+\frac{1}{20}\)

\(\Leftrightarrow\left(\frac{13}{4}-x\right).\frac{5}{4}=\frac{-19}{20}\)

\(\Leftrightarrow\frac{13}{4}-x=\frac{-19}{20}\div\frac{5}{4}\)

\(\Leftrightarrow\frac{325}{100}-x=\frac{-76}{100}\)

\(\Leftrightarrow x=\frac{325}{100}+\frac{76}{100}\)

\(\Leftrightarrow x=\frac{401}{100}\)

\(\frac{3y+2y}{x-y}=\frac{1}{2}\\ =>\frac{y\left(3+2\right)}{x-y}=\frac{1}{2}\\ =>\frac{y.5}{x-y}=\frac{1}{2}\\ =>y.5.2=x-y.1\\ \)

=>5.2=(x-y):y

=>10=x:y-y:y

=>10=x:y-1

=>11=x:y

=>x=11;y=1

\(\frac{3y+2y}{x-y}=\frac{1}{2}\)

\(\Rightarrow\frac{y\left(3+2\right)}{x-y}=\frac{1}{2}\)

\(\frac{y.5}{x-y}=\frac{1}{2}\)

=)y.5.2=x-y.1

=)5.2=(x-y):y

=)10=x:y-y:y

=)10=x:y-1

=)11=x:y

=) x=11;y=1

1.I’m not going to be a doctor 

2.Jeremy has accepted the job 

3.Tonight,everybody is going to watch the show 

4.She is going to late for work 

1. I/ not be/ a doctor

=> I am not a doctor

2. Jeremy/ accept/ the job 

=> Jeremy has accepted the job

3. Tonight/ everybody/ watch/ the show 

=> tonight everybody is going to watch the show

4. She/ be/ late/ for work

=> She is late for work 

5. You/ meet/ the Pope 

=> You have met the Pope

A.

1.Where is he going to visit?

2.What are they going to do?

3.Where is your sister going to study?

B.

1.Next month,they are going to get married.

2.My neighbors are going to move