There is an integer, use it to remove 312231123, the sum of the three remainder is 41, find this number Note: there should be formula and reconciliation process Note: there should be a formula reconciliation process. Please don't use x unknowns to solve it. I will add points

There is an integer, use it to remove 312231123, the sum of the three remainder is 41, find this number Note: there should be formula and reconciliation process Note: there should be a formula reconciliation process. Please don't use x unknowns to solve it. I will add points

First of all: allow me to say that the title should be: there is an integer, use it to remove 312231123, the sum of the three remainder is 41, find this number. Apply the nature of division: a △ K + B △ K + C △ k = (a + B + C) △ K, and then apply the relationship of division with remainder a △ k = M N312 + 231 + 123-41 = 625 decomposition factor: 62

As shown in the figure, the chords AB and AC of the two concentric circles and the big circle cut the small circle to the points D and e respectively

It is proved that if od and OE are connected, then OD ⊥ AB and OE ⊥ AC. according to the vertical diameter theorem, ad = BD, AE = CE, ∥ de ∥ BC

Math factorization 5 in grade one, please answer in detail, thank you! (10 14:21:3)
A^4×B^4-C^4

Original formula = (a × b) ^ 4-C ^ 4
=（A^2B^2+C^2)(A^2B^2-C^2)
=（A^2B^2+C^2)(AB+C)(AB-C)

In △ ABC, the line of high BD and CE intersects at point O. if △ ABC is not a right triangle and ∠ a = 60 °, then ∠ BOC=______ ．

If ∠ BOC is within △ ABC, as shown in the following figure: ∵ BD and CE are the heights of △ ABC, ∵ BOC = 360 ° - ∵ a - ∵ ADO - ∵ AEO = 120 °; if ∵ BOC is outside △ ABC, as shown in the following figure: ∵ BD and CE are the heights of △ ABC, ∵ BOC = 90 ° - ∵ DCO = 90 ° - ∵ ace = 60 °. So the answer is: 120 ° or 60 °

How much is 1 plus 3 and 1 / 8 + 5 and 1 / 24 + 7 and 1 / 48 + 9 and 1 / 80 +. 19 and 1 / 360? Thank you,

The original formula = (1 + 3 +...) +19)+(1/8+1/24+1/48+…… +1/360) =10x(1+19)/2+1/4x[(1-1/2)+(1/2-1/3)+…… +(1 / 9-1 / 10)] = 100 + 1 / 4x (1-1 / 10) = 100 + 9 / 40 = 100 and 9 / 40

If the determinant value of matrix A is 0, then a × a = a

If the determinant value of matrix A is 0, then a × a = a? Answer: if the determinant value of matrix A is 0, then the eigenvalue of matrix A contains at least one zero. Take the second-order determinant as an example, if a has three elements all 0, then its determinant must be 0, and a * a = 0 * e (that is, zero matrix, matrix with all zero elements). Where e is the identity matrix

1.8 divided by 2.4 times 4.6

∵1.8=0.3*6
4.6=2*2.3
2.4=0.4*6
∴(1.8*4.6)/2.4
=(0.3*6*2*2.3)/0.4*6
=4.9/2
=2.45

Given proposition p: for any x belongs to [1,2], x ^ 2-A is greater than or equal to 0. Proposition q: there exists x0 belonging to R, such that x0 ^ 2 + (A-1) x0 + 1 < 0
The known proposition p: for any x belongs to [2] x ^ 2-A greater than or equal to 0. Proposition q: existence x0 belongs to R, such that x0 ^ 2 + (A-1) x0 + 1 < 0. If P or q is true and P and Q is false, the value range of real number a is obtained

Proposition p: a ≤ X & # 178;, then a ≤ [x & # 178; minimum value 1 on interval [1,2], then:
a≤1
Proposition q: if the equation x & # 178; + 2aX + 2-A = 0 has a solution, then: △ = 4A & # 178; - 4 (2-A) ≥ 0, we obtain that:
A ≤ - 2 or a ≥ 1
1. If P is true and Q is false, then: [a ≤ 1] and [- 2]

How to calculate 1 2 3 4 5 6 7 8 = 1?
How to calculate 12345678 = 1 and 1234867 = 1
Eight books from the top of the 168 books cluster are put down. Now there are 10 more books on the top than on the bottom

1+2+（3×4+5×6）÷7-8=1
1+2+3+4-8+6-7=1

Given that the values of 3x'7y'n and 3x-10 are opposite to each other, what is x = then?

What's this 3x'7y'n