Ask a math expert or a life expert to help solve it.

You calculate it this way, and the number of days each person lives is all added up, such as the utility bill: A (31 days) + B (31 days) + A (7 days) + B (7 days) + C (23 days) + D (23 days) + E (8 days) = 130 days, so you put the utility bill 195 130=, and then multiply it by the number of days each person actually lives by the water and electricity bill they want to pay, and the gas bill is also calculated in this way.

Mathematics is ideal. You are practical. Mathematics can only be calculated on an average basis, and the actual water or gas bill today may be more than yesterday's.

By the 25th, the four people of abab had a total of 8 days of water and electricity bills, yuan. 10 days from the 25th to the 4th of April. abcde 5 people.

Everyone should be out: 13 days from April 4th to April 17th. ABCD 4 people.

Each person should be out: about, etc.) A should be out B should be out A should be out B should be out C should be out D should be out E should be out The same method is used to calculate the gas fee. The above is hydropower.

It's time to cook, otherwise the old man will come back and train people.

<>I hope that the wheel can be wiped out, thank you.

<> Tuno Pi Ye shouted to hold the mold.

<> diagram chain group is tented or late.

<>Please sentence Li Caichang to punch the code, thank you.

This question is very simple, the top angles are equal, and the steps are perfected by yourself.

If the production table x person is set, then the person who produces the chair (84-x) will be determined according to the question: 12 x 5 5 720 24 (84-x) 4 5 720 The solution of the inequality group obtains: x=60 84-60=24 Answer:

The plan to allocate the number of employees who produce tables and chairs is 60 people for tables and 24 for chairs.

Because cod- doa=28°

So COD-14°= DOA+14°

Because bod=14°

So cod- bod= doa+ bod, so cob= boa

So OB is the midline of AOC.

①∠cod=∠cob+∠bod

doa=∠aob-∠bod

cod-∠doa=28°

Substitution , to

The result is (cob+ bod)-(aob- bod)=28° bod=14°

So cob- aob=0

So cob= aob, so ob is the angular bisector of aoc.

Suppose aob=90 and ob is the bisector of aob aob= boc=45

aod+∠bod=∠aob

then AOD+14 =45

aod=31º

In the same way: cod = cob + bod

OB is the bisector of AOC.