A math problem: if | A-3 | + | B-1 | + | 5 + C | = 0, try to find the value of 2 | a | - 3 | + B | + | C | Such as the title

A math problem: if | A-3 | + | B-1 | + | 5 + C | = 0, try to find the value of 2 | a | - 3 | + B | + | C | Such as the title

|a-3|+|b-1|+|5+c|=0 a=3 b=1 c=-5 2|a|-3|b|+|c| =2X3-3X1+5 =6-3+5 =8

Xiao Ming is not careful in his homework. He forgets the decimal point of two decimal places. The integer he gets is 35.64 more than the original decimal

The decimal point of two decimal places is forgotten, which is 100 times larger than the original number
100-1 = 99 (Times)
The original decimal is
35.64÷99＝0.36

A and B two cars from AB two places at the same time, the first time 50 kilometers away from a meet, after meeting two cars continue to move forward, each arrived
The first meeting is 80 kilometers away from a, and the two vehicles return immediately after arriving at two places. The second meeting is three fifths of the whole distance from B, so the distance between a and B is calculated

In the first case, after meeting, Party A and Party B reach AB respectively and then turn back to meet
The first encounter takes the whole journey, and the second encounter takes a total of 3 * journey
80*3/(1+3/5)=150
The second situation
A catches up with B in B, and takes the whole journey for the first encounter. A and B take one more journey for the second encounter than B,
V A / v b = (1 + 3 / 5) / (3 / 5) = 8 / 3
AB = 80 / (8 / (8 + 3)) = 110
The third situation
When B got to a, he caught up with a. the first encounter took the whole journey. When B and a met for the second time, they took one more journey than a,
V b / V A = (1 + 2 / 5) / (2 / 5) = 7 / 2
AB = 80 / (2 / (7 + 2)) = 360

2. It is known that A. B is opposite to each other, C. D is reciprocal to each other, and | m | = 3. Then the value of 2 (a + b) - 3CD + m is |
4. The cube of a number whose bisection is 1 / 4 is
6. At 2:3 on the table, the angle of the clock and minute hand is
7. Given that ∠ AOB = 40 ° and ∠ BOC = 70 ° have a common vertex and a common edge, then the size of ∠ AOC is
8. If a store sells a color TV set at a discount of 10% of the price, it can still make a profit of 20%. If the purchase price of the color TV set is 2400 yuan, the price of the color TV set is
If a computer can analyze one billion possibilities per minute, it can analyze one hundred million possibilities per hour
10. If you buy a movie ticket at will, the possibility of seat number being a multiple of 3 is greater than that of seat number being a multiple of 7

(2) - 6 or 0
（4）1/8
（6）54
(7) 30 or 110
（8）3200
(9) 60 billion
(10) Big

A and B trains set out from two places 1080km apart at the same time. They run in opposite directions and meet each other in 8 hours. Car a runs 70km per hour, and car B runs how many kilometers per hour. How to solve the equation

Set B: X kilometers per hour
70+x=1080÷8
x+70=135
x=135-70
x=65
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There are 8 teachers in class five (1). Their ages are as follows: 28, 31, 26, 27, 32, 26, 48, 30
Median, total and mode. (2) which of the mean, median and mode do you think can better represent the age level of the eight teachers

Total = 28 + 31 + 26 + 27 + 32 + 26 + 48 + 30 = 248
Average (28 + 31 + 26 + 27 + 32 + 26 + 48 + 30) / 8 = 32
The average can better represent the age level of the eight teachers

A car runs 140 in 2 hours. At this speed, it runs 5 hours from a to B. how long is the highway between a and B

140 * 5 / 2 = 350 km

An old woman said that one year in the 20th century, the square of her age is exactly the number of A.D. in that year, and one year in the 21st century, the age of her great granddaughter
The square number is also the number of the year, the age of her and her great granddaughter

44×44=1936
In 1936, grandma was 44 years old
45×45=2025
By 2025, my great granddaughter will be 45 years old

The speed ratio of a and B vehicles is 5:3, and the two vehicles start from ab at the same time. If they are facing each other, they will meet in 0.5 hours;
If you go in the same direction, it will take () hours for car a to catch up with car B

Suppose the speed of car a is 5x and that of car B is 3x
Whole course = 0.5 × (5x + 3x) = 4x
If you go in the same direction, the distance a takes when meeting is equal to (distance b + 4x)
Then 5T = 3T + 4x
The solution is t = 2
A: it takes two hours for car a to catch up with car B

It is known that in the plane quadrilateral ABCD, AB + BD

Because the parallelogram must have two diagonally equal to or greater than 90 ° because AB + BD