Ask the master for divination and kowtow to you! High scores!! 10

He's superstitious about what kind of society he should kill, and he's superstitious.

It's really angry, rolling.

Pretty good. Just go to the divination network and check it.

Then yours is worthy of it.

Ha, just coax you to be happy, why be serious?

Solution: (Manuscript blind 1) D as dm bc, quadrilateral ABCD is a parallelogram, ab=cd=6, c=60°, dm=dc sin60°=3 times the root number 3

Area of ABCD = BC DM = 24 root number 3

2) Find the point k on EF so that fk=bf, and connect bk, be, quadrilateral abcd parallelogram, a=60, cd=ab, ae=ab, abe is an equilateral triangle, efb=60, fk=bf, the key edge bfk is an equilateral triangle, god old bk=bf, abf+ abk=60, abk+ kbe=60°, abf= kbe, abf bek, af=ek, ef=bf+af

Solution: Xiao Ming's deposit from Yuanyinqiao in August to December: 1500 + (1500-100) + (1500-100-200) + (1500-100-200 + 500) + (1500-100-200 + 500 + 300) with cavity + (1500-100-200 + 500 + 300-250) = 9550 yuan hail fierce

Pure as Li -100-200-250) + (500 + 300) do late.

Omitting parentheses should have learned oaks!

This question has been asked by many people, and I have explained it many times.

Here's my explanation.

The reason is that the number of songs that are meaningful to Brother Wuye Cong has been accumulated.

Let's say you want to run 1000 meters, you run 100 meters first, and then 900 meters, right?

Another 100 meters, 800 meters, right?

So, what is the meaning of 900 + 800 = 1700 meters?

It doesn't make sense, so there's no intention to add it up!!

So, there will be "unexpected" numbers.

The meaning of the sum on the right is the remaining money, which is not the same as the total money.