I urgently need these four questions, help solve them, thank you

1）sin103°15'=sin(180°-76°45')=sin76°45'

sin164°30'=sin(180°-15°30')=sin15°30'

At [-90°,90°] y=sinx is an increasing function, so sin76°45'>sin15°30'

So sin103°15'>sin164°30'

2）cos(4π+7π/10)=cos7π/10

cos(-44π/9)=cos44π/9=cos(4π+8π/9)=cos8π/9

In [0, ]y=cosx is a subtractive function, cos7 10>cos8 9

So cos47 10>cos(-44 9).

3）sin508°=sin(360°+148°)=sin148°

sin144°

At [90°, 180°] y=sinx is a subtractive function, sin144°>sin148°

So sin508°4)cos670°=cos(720°-50°)=cos50°

cos(-770°)=cos(-720°-50°)=cos50°

So cos670°=cos(-770°).

It's really fateful, I'll see you again.

1. Because hydrocarbon combustion only produces CO2 and H2O, it is known from the inscription that 1molA burns to produce CO2 and H2O 6mol each, so A is C6H12

2, 1molA combustion to generate CO2 and H2O each 6mol, so each generation of 3mol is there, C6H12 molecular weight is 84, so it is 42g, C6H12 + 9O2 = 6CO2 + 6H2O, so combustion consumes oxygen, the volume is.

3. According to the chemical formula, it can be known that the unsaturation of a is 1, so there are two cases, there is a double bond or a ring, because the bromine water cannot be discolored, so there is no double bond, and because there is only one kind of monochlorogen, it is cyclohexane (I am not good at drawing the structure of the simple formula here, you should know, right?). ）

4. The addition product has four methyl groups, indicating that there are two methyl groups in the side chain and 4 carbon atoms on the main chain, and the structure may be (CH3)2C=C(CH3)2, CH2=C(CH3)CH3, CH2=CHC(CH3)2CH3

5. The hydrocarbon with the same minimum formula as A, and at the same time 2 carbon atoms less than A, is C4H8, which can be cyclobutane, 1-butene, 2-butene, isopropylene.

So there are 4 isomers.

Because length and width are coprime numbers, it may be 1992 and 1, 8 and 249, 3 and 83, so there are four such rectangles.

Taxable sales revenue: 1200 + 100 2 = 12.5 million yuan advertising expenditure deduction limit: 1250 * 15% = 10,000.

There is no need to increase the taxable income.

Deduction limit for business entertainment expenses: 10,000 yuan.

1250 * 10,000 yuan and 30 * 60% = 180,000 yuan, whichever is lower, increase the taxable income: 10,000 yuan.

Income from national debt is exempt from taxation; The investment income of the joint venture is no longer subject to enterprise income tax.

Both of these incomes are included in the "Investment Income" account, which can be calculated by excluding relevant data.

Taxable income = 1200 + 100 2-700-150-100 + 10,000 yuan of enterprise income tax payable = 10,000 yuan.

Just to clarify: Can you be more detailed about your lease term? How many months is in 2010? I will count it as 6 months below.

1. Accounting profit 1200 + 100 12 * 6 + 20-700-150-100 + 50 370

Tax Adjustments: 1Interest on treasury bonds is exempt from tax and reduced by 20

2.Advertising expenditure: Advertising expenses that may be charged before tax (1200 + 100 12 * 6) * 15%, then 80 advertising can be fully charged before tax without any adjustment.

3.Business entertainment expenses: 60% of the actual amount 30 * 60 100 18, deduction limit (1200 + 100 12 * 6) * 5 1000, the amount of overexpenditure, increase.

4.The after-tax profit of 500,000 yuan from the joint venture is non-taxable income, which is reduced by 50%.

2. Taxable income accounting profit + tax adjustment 370-20+

3. The amount of income tax payable

Hope it works for you.

<> good orange grinded the excited sail Ming hail y( o )y

Answer: Nai Nai sentenced Chang to change Lu Fu:

Fourth, there are many professional forums and knowledge platforms on the Internet, (such as homework help) There is also a lot of information on it, and I always go to the forum to seek solutions when I encounter professional problems.

Fifth, ask your questions more carefully and clearly! It's easier for people to understand what it means!

(o ) Good luck in your studies

Help me look at this question. Thank you.

Report|Share|2016-10-29 11:43Ever owned Xu Liping |Viewed 18 times From: Mobile Knows.

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