Mathematics application problems, process, mathematics application problems to process

Solution: The original plan was to produce x 10,000 packs of copy paper last year.

In the second half of last year, the production of copy paper was 10,000 packs).

There are equations according to the meaning of the question.

x + solution x = 10,000 packs).

A: Originally, it was planned to produce 10,000 packs of copy paper last year.

100 million yuan = (107000000) yuan.

Production in the second half of last year was 10,000 packs), and production in the first half of last year was 10,000 packs.

Last year, a total of 2+ 10,000 packs were produced).

So, planned production = 10,000 packs).

100 million yuan = 107000000 yuan = to the eighth power.

In the second half of the year, 10,000 packs were produced.

Last year, the actual production was 10,000 packs.

It is planned to produce 10,000 packs.

100 million yuan = (107000000) yuan.

The first half of the year and the second half of the year (full year.

The annual production exceeded the original plan of 10,000 packs.

10,000 packs) 100 million yuan = 107,000,000 yuan.

Originally, it was planned to produce 10,000 packs of printed paper.

The speed ratio before the encounter is 4:3 and the distance ratio is 4:3. When they meet, line A 4 7, line B 3 7The velocity ratio after the encounter is 4 (1 + 10%):3 (1-20%) = 11:6

When A arrives at B after the encounter, the proportion of the distance traveled by B to the total distance is 3 7 11 6 = 18 77

The distance between A and B is 91 km.

The speed ratio is 4 to 3 and the distance ratio is 4:3. Line A 4 7, line B 3 7

The velocity ratio after the encounter is 4 (1 + 10%): 3 (1-20%) = 11:63 7 11 6 = 18 77 (the distance traveled by B when A arrives at B after the encounter).

The distance between A and B is 77 km.

1. Set up a large box of x bottles, small boxes of y bottles, then there are 3x+4y=76, because the large and small boxes in the packaging are more than the small boxes, so x>y, when taking x=y, there are 7y=76, knowing that y is about 11, so x should be at least above 11.

When x=12, there is y=10

When x=13, there is 4y=37 that is not true.

When x=14, there is 4y=34 that is not true.

When x=15, there is 4y=31 that is not true.

When x=16, there is y=7....When x=20, there is y=4....When x=24, there is y=1

2. It is known that the number of non-members sent is 10 more than 1 9 of the number of members, and if the number of non-members is x, the number of members is 9 (x-10).

Since the total number is 160, it is known that x+9(x-10)=160, the solution is x=25, and the number of non-members is 25, so that the number of members is 135, 3, (1) If the decoration cost of company A is x yuan per week, and the decoration cost of company B is y yuan per week, then there is.

6 (x+y) = 10,000 yuan; 4x+9y=10,000 yuan;

The renovation cost of team A is 350,000 yuan per week, and team B is 4.15 million yuan.

2) The total amount of decoration works is Z, the weekly workload of A is m, and the weekly workload of B is n.

6（m+n)=z；4m+9n=z, the total weekly work of team A is z 10, and the total weekly work of team B is z 15, that is, team A completes it in 10 weeks alone, and team B completes it in 15 weeks.

From the perspective of saving time, the two companies work together the fastest, and the total is completed in 6 days; If you go it alone, Team A for 10 weeks;

If you consider it from the perspective of saving expenses, team B spent a total of 40,000 yuan for 15 weeks alone, which is the most economical.

Hello. a²+2b²-2ab-2bc+c²=0a²+（b²+b²）-2ab-2bc+c²=0a²-2ab+b²+b²-2bc+c²=0a-b)²+b-c)²=0

Because (a-b) 0 , (b-c) 0

So a-b=0, b-c=0

So a=b=c

That is, the triangle is equilateral.

2.There are a total of x copies. Then A has 42% x, B has 5 7*42 x, and C (5 7*42 x--20).

42%x+5 7*42 x+(5 7*42 x--20)=x, which gives x=1000

So A has 420 copies, B has 300 copies, and C has 280 copies.

1.In hospital A, the probability of drug A is 3 10, B 1 5 In hospital B, the probability of drug A is 1 2, B 239 495, so the probability of drug A is 3 20, B is 239 2475

A is greater than B, so the total efficacy of A is better.

2) Solution: There are a total of x copies.

Then Class A is assigned to (42%x) and Class B (42%x*5 7).

x=（42%x）+（42%x*5/7）+（42%x*5/7）—20x=

x=1000

1000*42%=420 (book).

420*5 7=300 (book).

300-20=280 (this).

Answer: 420 books for Class A, 300 books for Class B, and 280 books for Class C.

sorry!

Question 1: I won't

Hee-hee......

The total effective rate of drug A = (6 + 40) (20 + 80) = 44%.

The total effective rate of drug B = (2 + 478) (10 + 990) = 48%.

Therefore, the overall efficacy of drug B is better.

2.B gets the total: 42 x5 7 = 3 10 C gets the total:

1-42 -3 10) 28 The total number of exercise books in this batch: 20 (3 10 28 ) 1000 (book) A to get the number of books: 1000 x 42 420 (book) B to get the number of books:

1000x3 10 300 (book) C gets the number of copies: 1000x28 280 (cop) Answer: A gets 420 copies, B gets 300 copies, and C gets 280 copies.

∵3<√10<4

The integer part of 10 is x=3, then its decimal part is y= 10-3(x 2-y 2) (x+y)=x-y=3-(10-3)=6- 10

where " " denotes the root number,"^2"indicates the square).

x+y = root number 10

So y-root number 10=-x

Root number 10 = 3 o'clock.

So x=3 primitive=x-y=3-(10-3)=6-10

The root number 10 is about 3 o'clock because the square of 3 is 9 and the square of 4 is 16, so x=3 y=root number 10-3

Finally, calculate (the square of x minus the square of y) (x+y) = (x+y)·(x-y) (x+y).

x-y = 6 - root number 10

1.Cut off the entire length of the circle: 108 360

So cut off the length of the part: 40 * (108 360) = 12cm garden.

So the whole circumference =

So radius =

1.The length of the cut wire = 40 x 108 360 = 12 cm.

2.Circumference = (360 120) =

Radius = = cm.

1,40*108 360 = 12 cm.

2, Circumference = Radius = Circumference 2=cm.

Solution: Let one candle be 3 times larger than another candle after x hours.

4-x=3(3-x)

4-x =9-3x

x+3x=9-4

2x=5x=5/2

x = A: After an hour one candle is 3 times larger than another.

Set the ignition for x hours, then.

4-x＝3(3-x)

Sorted out. x=

Solution: The class has a total of 26 13 25 = 50 people.

I'm a teacher, thank you.

Solution: Class size: 26*25 13=50 (people).

A: There are 50 students in the class.