bằng 8 nhé

mong các bạn ủng hộ

=8!!

đúng thì tk nha!!

8 nha bạn

Ai thấy đúng thì ủng hộ nha !!!

\(\frac{2x-1}{-3}=\frac{x+5}{2}\Rightarrow2\left(2x-1\right)=-3\left(x+5\right)\)

                                     \(\Rightarrow4x-2=-3x-15\)

                                     \(\Rightarrow4x+3x=-15+2\)

                                      \(\Rightarrow7x=-13\)

                                      \(\Rightarrow x=\frac{-13}{7}\)

câu này tích chéo lên là được em nhé

0 + 0 = 0 

1 + 1 = 2 

3 + 3 = 6

chuc ban hok tot nha

0 + 0 = 0

1 + 1 = 2

3 +  3 = 6

hok tốt

1x15/2x15=15/30

2x10/3x10=20/30

3x6/5x6=18/30

chúc học tốt

thank

= 2 đó anh gì ơi

1+1=2;

1+1=2;

1+1=2.

k nhe

mình kết bạn với cậu nhé

mình kết bạn với cậu nhé

bạn rảnh để đi kết bạn à !

Computer is a modern tool which has made life very easy and simple. It has the capability to complete more than one task in small time. It is able to do work of many human beings alone within less time. It is the utility of highest efficiency. The first computer was a mechanical computer which was created by the Charles Babbage. A computer works successfully using its hardware and fully installed application software. Other accessories of the computer are keyboard, mouse, printer, CPU and UPS.

The data which we put into the computer using device is called input data and device as input device and data which we take outside using printer or the other device is called as output data and device as output device. The input data gets changed into the information which can be stored and changed anytime. Computer is very safe tool for data storage which is being used in various fields. We can shop, pay our electricity bill, water bill, video chat, messaging, e-mail messages anywhere in the world and lots of online activities using the internet.

hok tốt ~

cái này là mình phát minh chứ ko phải là cái có do người khác phát minh nhé bạn

\(s=\frac{1}{3}+\frac{1}{3^2}+\frac{1}{3^3}+....+\frac{1}{3^{2015}}\)

Suy ra : \(3S=1+\frac{1}{3}+\frac{1}{3^2}+....+\frac{1}{3^{2014}}\)

Nên \(3S-S=1-\frac{1}{3^{2015}}\)hay \(2S=1-\frac{1}{3^{2015}}\)Khi đó S =\(\frac{1}{2}-\frac{1}{3^{2015}.2}\)

Vậy ..................

1 + 2 + 3 + 4 +5  +6 +7+8+9 = 45 nha k mình nha các bạn

45 bạn

1+2+3+4+5+6+7+8+9=45