Calculation of math problems, allocation of 50,000 yuan is there a formula to tell 20

First of all, the number of purchases for each item must be a multiple of 5, and the unit price of the product can be seen as: 2132, 2132, 2626, 2236, 1508

And these four digits are all multiples of 13, because 50000 is not divisible by 13, so there is no solution.

The shift deformation is (a-3) 2+(b-4) 2+(c-5) 2=02 means squared I can't play the superscript.

So a=3 b=4 c=5

So it's a right triangle.

Author: aidinb - probationary period level 12-8 13:35 right triangle.

Solution: (a*a-6a+9)+(b*b-8b+16)+(c*c-10c+25)=0

a-3) 2 + (b-4) 2 + (c-5) 2 = 0 (note: 2 here is squared) a = 3, b = 4, c = 5

Because party A + side B = side C.

Make an indefinite equation (you won't, I have nothing to say......Then let a few of them be constants (that is, when it is a constant direct calculation, if you have a special computer, you can calculate all the solutions, buy a software) There is no quick way to these problems, if you can think of it, it will be at a high level, I hope mine will help you.

There is no formula, only hard matching:

There is no f bar).

4264a+5252b+4472c+3016d=500000

4264 5252 4472 3016 are all multiples of 13, so there is no solution.

There is absolutely no solution, and the question is wrong.

Is a, b's **the same? Is there an f?

You reconfirm the question.

There is no formula for factorial, it needs to be calculated one by one, and the factorial of numbers within 20 is calculated.

Factorials are generally difficult to calculate because the products are large.

The factorial numbers from 1 to 20 are listed below:

10 million for the first purchase.

The second purchase is 1000 (1+10%) million.

The third purchase is 1000 (1+10%) (1+10%) million.

For each purchase, ** increases by 10% of the previous purchase amount Let the nth purchase be an n-1 and the n-1 purchase be an-1

then there is an=(an-1)(1+10%) 1

an-1=(an-2)(1+10%).2...

a2=a1(1+10%) n-1.

Multiplying the above n-1 equations =>an*(an-1)*a2=(an-1)(1+10%)(an-12)(1+10%)*a1(1+10%)

There are (an-1)*. on both sides of the equationA2 can therefore be divided.

So in the end, we get an=a1(1+10%) n-1)=1000(1+10%) n-1).

100th a100 = 1000 (1 + 10%) 100-1) = 1000 (1 + 10%) 99

If I'm going to buy 100 of these things, then.

a1+a2+..a100=1000+1000(1+10%)+1000(1+10%)^99

You can find the proportional sequence in parentheses with a common ratio of 1+10% and a series of 100 terms in the first round.

According to the first n terms of the proportional series and the formula =>sn=a1(q n-1) (q-1).

a1+a2+..a100= 1000((1+10%)^0+(1+10%)+1+10%)^99)

Annuity compound interest formula, accounting.

1000*（p/a,10%，100）=

There is excel** to ask for it.

This question is wrong, if each purchase ** will increase by 10%, then the third time is not 11.1 million, but 12.1 million, take a look for yourself!

127 copies.

Let's assume that each has x books, x+38) (x-72) =3

The solution is x=127

x+38=(x-72)*3

Calculations are your own business;

I bought 80% of the total.

If a1 is the target value and b1 is the actual completion value, enter the formula: "b1 a1*100" in c1 or the formula: "b1 a1" in c1 and set the c1 cell format as a percentage.

For example, if A1 enters 1000 and B1 enters 800, C1 will display "80" or "80%".

One year later you have: 10,000 * (1+5%) yuan) Two years later you have: 10,000 * (1+5%) (1+5%) yuan) Three years later you have:

10000*(1+5%)(1+5%)(1+5%) yuan) after 80 years you have: 10000*[(1+5%) 80]=yuan).

x=known z-a= find x

Because z-a= gives 5z-5a=6

Subtract the two formulas.

3a=a=x=8a+

So a system of ternary equations that is easy to solve.

a=z=x=11

Substitute for the elimination of the element.

It's very simple, Z=A+, substituting Z into A=, that x=11

Is it known that the arch height h=3m, the half-chord length l=, and the arc length x?

Radius r=(l +h) (2h)=( (m)arc length x=r*arcsin(l r) m

Look at your picture, the angle in the picture should be a right angle, right? Extend the line segment by 3m, and then make auxiliary lines to turn this diagram into a fan with a radius of r and an angle of a, so that it is easy to calculate. I don't know how to ask again.

This can't be counted, who knows what arc, parabola? Elliptic curves?? It's not scientific, buddy.

Is your topic complete? How do you ask for the length of the arc? The radian is to describe the size of the angle, how can it be described by long? If you find the arc length, you can't seem to solve this problem, and you can't integrate, let alone use elementary mathematics to solve it.

The amplitude varies, and who knows how.