In Hangzhou middle school basketball match, Xiao Fang played 10 games. He scored 22, 15, 12 and 19 points in the 6th, 7th, 8th and 9th Games respectively. His average score y in the first nine games is higher than that in the first five games. If his average score in the 10th game is more than 18 points. (1) express y with algebraic formula containing x; (2) Xiao Fang's total score in the first five games What is the maximum value that can be achieved; (3) what is the minimum value that Xiao Fang can achieve in game 10?

(1) Y = 5x + 22 + 15 + 12 + 199 = 5x + 689; (2) from the question meaning y = 5x + 689 ＞ x, we get x ＜ 17, so Xiao Fang's maximum total score in the first five games should be 17 × 5-1 = 84; (3) from the question meaning, Xiao Fang's score in these 10 games is at least 18 × 10 + 1 = 181, if his score in the 10th game is s, then he has 84 + (22 + 15 + 12 + 19) + s ≥ 181, we get s ≥ 29, so Xiao Fang is in the third game The minimum score in 10 games should be 29

(1-2 / 1-4 / 1-8 / 1-16 / 1-32 / 1) / 1 / 64

Original formula = (1-1 / 2-1 / 4-1 / 8-1 / 16-1 / 32) × 64
=1×64-1/2×64.
=64-32-16-8-4-2
=2

Fill in the numbers according to the rules: 1,2,2,5,4,11,8,23,16,47, (), (), 64191

32 95
In fact, two sequences are crossed and combined to form a sequence. The odd number is 1 24 8 16 32 64. Obviously, the latter number is the former number multiplied by 2, the even number is 2 5 11 23 47 95 191, and the latter number is the former number multiplied by 2 plus 1

1.2.4.8.16.32.64.128. What are the rules?

The (n-1) power of an = 2

A cuboid room, 5 meters long and 3 meters wide, its four walls are 1 meter high at the bottom (1 square meter at the door is not shown). How many square meters of paint area is painted
A cuboid room, 5 meters long and 3 meters wide, its four walls are painted with 1 meter high paint (1 square meter at the door) how many square meters of paint area

46m

There is a kind of energy saving electricity used in 220 V circuit, the rated power is only 1 W, and the current passing through it is calculated

If the power factor is not considered, the current of 1W electric appliance should be; current = power / voltage, = 1000 / 220 = 4.5mA. Please refer to

It is known that ABC is the length of three sides of a triangle ABC, and satisfies a & # 179; + AB & # 178; + BC & # 178; = B & # 179; + A & # 178; B + AC & # 178;; to judge the shape of a triangle

An isosceles triangle or a right triangle
a³+ab²+bc²=b³+a²b+ac²
a³+ab²+bc²-b³-a²b-ac²=0
a³ -a²b +ab²-b³+bc²-ac²=0
a²（a-b）+b²(a-b)+c²(b-a)=0
(a-b)(a²+b²-c²)=0
A-B = 0 or a & # 178; + B & # 178; - C & # 178; = 0
That is, a = B or a & # 178; + B & # 178; = C & # 178;
Then the triangle is:
An isosceles triangle or a right triangle

It is known that the density of water is p and the molar mass of water is m
How many water molecules are there in 1cm ^ 3 water?
2. How large is the diameter of a water molecule? (water molecule is regarded as ball model, v = 1 / 6paid ^ 3)

The first answer is that P divided by M equals P of M
The second answer is p of M multiplied by 2 into 3.14

What does 17% VAT mean?

The 17% value-added tax means that 17% of the sales revenue is paid every month, which can be deducted, input invoice can be certified, and output input can be used, The scope of value-added tax includes: 1. Goods; 2. Taxable services; 3. Imported goods. 3. Tax rate of value-added tax. The tax rate of value-added tax is divided into three levels: basic tax rate of 17%, low tax rate of 13% and zero tax rate. 4. Tax basis of value-added tax: taxpayers sell goods Or provide taxable services on the basis of sales, The tax basis of imported goods is the specified component tax price. 5. Calculation of VAT tax payable. 1. General taxpayer's tax payable = current output tax - current input tax. 2. Small scale taxpayer's tax payable = sales tax included (1 + tax yield) × tax collection rate. 3. Imported goods' tax payable = (customs duty paid price ＋ Tariff x consumption tax

A simple circuit, only a bulb and a fixed value resistor, power supply voltage 3V, current 0.2A, resistance voltage at both ends 1V, how to calculate the resistance value?

If the voltage at both ends of the resistor is 1V, the power supply voltage is 3V and the current is 0.2A, then the bulb is in series with the constant value resistor in the circuit, and the resistance = voltage / current = 1 / 0.2 = 5 ohm