How to do it? The question is below. It is about solving equations. Urgent. I not only want to get the numbers, I also want the process.

How to do it? The question is below. It is about solving equations. Urgent. I not only want to get the numbers, I also want the process.

Ⅹ:7=15:12 3.2/Ⅹ=48/105 (Ⅹ+3): 12=49:84 5: Ⅹ=1/4:1/5

12x=7×15 48x =3.2×105 48(x+3) =12×49 1/4x=1/5×5

12x =105 48x=336 x+3 =12.25 1/4x =1

x =8.75 x=7 x= 9.25 x=4

Ⅹ:3/4=1/2: 2/5 Ⅹ—160/5=384/8

2/5x = 3/4 ×1/2 x-32=48

2/5x=3/8 x=48+32

x =15/16 x=80 You should finish your homework before going to bed. How to say urgent in English!

You should finish all your homework before you go to bed.

You should finish all your homework before you go to bed. Father and son during the earthquake. How Amanda encouraged her classmates More than 450 words, urgent!

At the time of the earthquake, the students were concentrating on class. Suddenly, the ground shook. The ground was like waves after waves, shaking non-stop. The windows shattered, tables overturned, and the classroom It was like an exploding pot. Some students screamed, some cried loudly, some were petrified and motionless, and some even jumped out of the window and rushed out of the classroom. At this time, Amanda stood up strongly and said calmly to everyone: "Don't panic, everyone. My father once told me that it is safest to hide in a corner during an earthquake. Come with me!" Then Amanda led her classmates. They ran to the corner. Just as the 14 students hid in the corner, the roof collapsed with a bang, forming a big triangle with the corner. The students opened their eyes, and the 14 students were safe and sound. They were able to hold on at first, but as time passed by, everyone gradually couldn't bear it. My belly sang "Empty City", and my lips were chapped due to thirst. Many students had fainted due to hunger and thirst, and some even started crying, calling daddy and mommy. At this time, Amanda thought: Are we really going to be buried here? Are we really not going to see our parents? Suddenly, Amanda's heart darkened. Suddenly, Amanda thought of what her father often said to her, "No matter what happens, I will always be with you." Yes, as long as my father is alive, he will definitely come to save me. Thinking of this, Amanda seemed to see the light and the hope of life. He licked his chapped lips and said hoarsely: "Students, don't be afraid. As long as my father is alive, he will definitely come to save us." Amanda's words were like reassurance. Then, he organized the students to sing, tell stories, and tell jokes. The students gradually calmed down, were no longer afraid, and got through this difficult time together.

After the students persisted for a full 38 hours, a beam of light suddenly shot into the darkness, and only the sound of someone turning over rocks was heard. Amanda tentatively asked: "Dad, is it you?" "

I heard a deep shout: "Amanda, my son!"

It was really my father. Amanda was very happy and said: "Dad, I will. I know you will definitely come to save me and my classmates. We have 14 classmates here, and they are all alive and uninjured!" Amanda's father quickly called for help from passers-by, and after a while, a safe exit was opened. came out. I want to run for squadron leader and hope someone can give me a satisfactory answer! urgent!

Student, if you sincerely want to run for squadron leader, please use your true language to explain your speech. After all, you know yourself best.

In the past, I have made similar mistakes. I could save a lot of time thinking about the manuscript, so I used my cleverness and learned from the speech manuscripts on the Internet. I thought no one would find out. Who would have thought that when the teacher heard that I didn't write it myself, just like that, for that trivial mistake and cleverness, I lost the opportunity to be the captain. I believe you are very good. Don't save time and effort. Really, It will ruin your dream of being a squadron leader.

I really speak from the bottom of my heart and really remind you

Dear leaders, teachers, classmates, and competitive partners:

Hello!

Then first introduce yourself, personal strengths and other information that will help you campaign.

Second, make some assumptions: if you succeed in the competition, how will you develop and how will you serve as a model leader? The more aspects you can talk about, the better. But don't brag! Write according to your own abilities and reality.

Third, let’s make some assumptions: What will happen to you if you fail in the election (of course, don’t be discouraged and continue your usual study and work). Write it in a more touching way to let the judges know that you are not I came here to serve the people for the position of brigade committee member

In the end, thank you leaders and teachers and your running partners. It shows that you are more polite and friendly to your competitors. It is convenient to use. Give a name to the 2-story building made of chopsticks. . It should be environmentally friendly, and it should sound good. . urgent!

Zhuqing Yimeng

Are there any Qingdao 3+2 schools that include both electromechanical and auto repair classes and finance classes? urgent!

If you are in Qingdao, I suggest you get to know Wantong in Shandong, which is located in Jinan, not far from Qingdao. Recently, the school also held a super skills competition, introduced a number of new devices, and recruited some professional teachers with many years of teaching experience. The overall strength has been greatly improved. Personally, I feel it’s best to visit the school in person, and maybe catch the competition! Use a pallet balance to weigh the mass of a pin. Which of the following statements is correct ( ) Urgent!!!!!!!!!

The correct one is C

A is not less than the mass of the balance , but less than the minimum weight mass.

BIn fact, the two readings of m1 and m2 are almost the same and cannot be distinguished. A simple algorithm for dividing 166 and 1/20 by 41 and a simple algorithm for dividing 43 and 2/19 by 21.

166 and 1/20 divided by 41 = (164 plus 2 1/20) divided by 41=4+1/20=4 1/20

43 and 2/19 divided by 21=(42+21/19)/21=2 +1/19=2 has 1/19 Exponential function: Given the function f(x)=1/2 (3^x+3^(-x)), find the domain of the function and monotonicity

Function f(x)=(3^x+3^(-x))/2, since the exponential function is always greater than 0, the domain is R

f'( x)=(3^xln3-3^(-x)ln3)/2=(ln3/2)*(3^x-3^(-x))

When 3^x-3 ^(-x)=0, that is, (3^x)^2=1, that is, 3^x=1 or -1 (dropped), that is, when x=0, f'(x)=0

When x<0, f'(x)<0, the function is a subtractive function; when x>0, f'(x)>0, the function is an increasing function

So the monotonic decreasing interval is (-inf, 0]; so the monotonic increasing interval is [0, inf); Express company! How much does it cost to send one item! How much does it cost to receive one piece of goods! How much is the profit? Urgent

Individual contractors should charge 2-5 yuan for collection at the split slot and 2-3 yuan for delivery. The outlet boss is not very clear about how much they will charge