Choose the right pronunciation for the Braille

Choose the right pronunciation for the Braille

Hang second

() come () go
Walking up and down
Running around
Flying around
jump about
To and fro
Ask for five more

Swimming around
Crawling up and down
Fight back and forth
Used to
Drilling around

Fill in the blanks with phrases
Fill in the blanks with "Bao"
In the face of tribulation, some people cry, (complain) the unfairness of life. And some people in adversity do not forget their great (), still live with happiness (). In the face of the former, life will () say: "you will be abandoned by me." in the latter, life will happily say: "I will send you to success." so, in the face of difficulties, we do not want to abandon ourselves, otherwise it will () for life

In the face of tribulation, some people cry and complain about the unfairness of life. While some people do not forget their lofty ambition in adversity and still live happily. In the face of the former, life will (sorry) say: "you will be abandoned by me." in the face of the latter, life will happily say: "I will send you to success." therefore, in the face of difficulties, we do not want to abandon ourselves, Otherwise, I'll regret it all my life

The following table shows the quality of a and B vegetables that can be transported by each vehicle. It is required that each vehicle should follow the regulations
The following table shows the quality of each vehicle that can carry two kinds of vegetables. Each vehicle is required to be fully loaded according to the regulations, and each vehicle can only have one kind of vegetable. If 8 vehicles with 11 tons are used, how many vehicles are there for carrying two kinds of vegetables?
Table a and B
1 ton per vehicle 1.5 tons per vehicle

Let X be the vehicle with armored vegetables, then we can know that the vehicle with B vegetables is 8-x
So we can have the above table and the meaning of the title
X + (8-x) * 1.5 = 11, so we can get x = 2
There are x cars a and 8-x cars Z
X+1.5（8-x）=11
x+12-1.5x=11
0.5x=1
x=2
A 2, B 6

How many tons is a cubic stone

The density of the stone is 2G per cubic centimeter
One side = 1000000 CC
2000000g, that's 2 tons
1.2 * 2 = 2.4 tons
1.3 * 2 = 2.6 tons
The above factors are not considered. From the actual production and life experience
One cubic stone = about 1.6 tons of stone

How to solve 51 △ x-3 = (27 + 51) △ x + 6

51÷（x-3）=（27+51）÷（x+6）
51÷（x-3）=78÷（x+6）
（x-3）÷51=（x+6）÷78
Multiply both sides by 51
x-3=51*(x+6)/78
Multiply both sides by 78
78*（x-3）=51*(x+6)
78x-78*3=51x+51*6
78x-234=51x+306
78x-51x=306+234
27x=540
x=20

The volume of a cube is 343 cubic centimeters. What's its surface area?

Side length a = cubic root 343 = 7 cm
Surface area s = 6A ^ 2 = 6 * 49 = 294cm2

The sum of the opposite number of a number and seven is negative three

The sum of the opposite number of a number and seven is negative three
ten

For a job, Party A and Party B need to cooperate in 4 hours, and Party B and Party C need to cooperate in 5 hours. Now, Party A and Party C need to cooperate in 2 hours, and the remaining Party B needs to finish in 6 hours. How long does it take for Party A to do this job alone?

After 2 hours of cooperation between Party A and Party C, the rest of Party B needs 6 hours to complete. This is equivalent to 2 hours of cooperation between Party A and Party B, 2 hours of cooperation between Party B and Party C, and 2 hours of completion by Party B
Therefore, the work efficiency of B to complete this task alone is (1-1 / 4 * 2-1 / 5 * 2) / 2 = 1 / 20
Therefore, the efficiency of a is 1 / 4-1 / 20 = 1 / 5
Therefore, it takes 1 / (1 / 5) = 5 hours for Party A to do this work alone

92 + 5 * 920 + 49 * 92 in what simple way?

92+5*920+49*92
=92+5×10×92+49×92
=92×（1+50+49）
=92×100
=9200