There are 50 RMB with one yuan, two yuan and five yuan. The total face value is 116 yuan. There are two more RMB with one yuan than two yuan. How many RMB with three face values?

Let 1 yuan have X pieces, 2 yuan (X-2) pieces, 5 yuan (52-2x). According to the meaning of the question, we get x + 2 × (X-2) + 5 × (52-2x) = 116, & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; X + 2X-4 + 260-10x = 116, & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & n

The minute hand on the clock face turns 360 degrees, and the hour hand turns 30 degrees, right

A clock has 12 hours. If the minute hand moves 360 degrees, it is equivalent to a circle, and an hour later
Then the clock goes for an hour
360 degrees △ 12 hours = 30 degrees
So, it's right

The Shanghai Nanjing Expressway is 274 kilometers long. A bus leaves from Shanghai and runs at a speed of 95 kilometers per hour. After a period of time, it is 84 kilometers away from Nanjing

I've been driving for X hours
95x=274-84
95x=190
x=190/95
x=2
A: it has been driving for 2 hours

A ^ 2n = 4, find the value of (2a ^ 3n) ^ 2-6a ^ 4N + 1 (- 5A ^ 4N-1)

Because a ^ 2n = 4
So a ^ 4N = a ^ 2n * a ^ 2n = 16
a^6n=a^2n*a^2n*a^2n=64
therefore
Original formula = 4 * a ^ 6n-6 * a ^ 4n-5a ^ 4N-1
=4*64-6*16-5*16-1
=79

The train route of a and B is 40 kilometers longer than that of a car. The car leaves from a place first, and the speed is 40 kilometers per hour and a half hours later, the train also leaves from a place
Six kilometers per hour. As a result, the bus arrives one hour later than the train. How long is the bus route between a and B?

Suppose the train leaves at t
The length of train route is 60t, and that of car route is 40 * 0.5 + 40t + 40 * 1
40T+20+40=60T-40
T=5
(1) The length of the train route is 60 * 5 = 300 km
The length of automobile route is 300-40 = 260 km
(2) The length of the bus route is 20 + 40 * 5 + 40 = 260 km

It is known that the n-th power y of - 3 │ m │ x is a monomial with respect to X and y, and the coefficient is - 5, and the degree is - 4=（

-The n-th power y of 3 │ m │ x is a monomial about X, y, and the coefficient is - 5, the degree is - 4,
therefore
-3│m│=-5
|m|=5/3
M = 5 / 3 or - 5 / 3

3. There is a batch of cement on the construction site. 50 tons of cement is used in the first day, which is 30 tons less than one sixth of the total. The next day, 50 tons of cement is used
3. There is a batch of cement on the construction site. 50 tons of cement are used in the first day, 30 tons less than one sixth of the total. One twelfth of the total is used in the second day. How many tons of cement are used in the second day?
4. A primary school used 442.8 yuan to buy a batch of desks and chairs. Each desk costs 35.6 yuan, and eight chairs are bought. Each chair costs 15.8 yuan. How many chairs are bought? (use equation solution)
5. The ratio of alcohol to water in a medicinal alcohol solution is 3:4
(1) How many grams of pure alcohol is needed to prepare 350 grams of this alcohol solution?
(2) There are 12 grams of pure alcohol in the container. When how many grams of water are added, the alcohol solution will be obtained?
6. There are 36 people reading books in the school library, of which 5% are boys. Later, there are several boys. At this time, the number of boys accounts for 11 / 19 of all the people reading books. How many people are there in the library?
7. Dad is going to deposit 10000 yuan in the bank for two years. There are two kinds of deposit methods: one is fixed for two years, with an annual interest rate of 2.5%; the other is to deposit for one year first, and then deposit the principal and interest for another year, with an annual interest rate of 2.25%. Can you help dad choose a suitable deposit method?
Formula! Use equation instead!

3: 50 * 6-30 = 270 * 1 / 2 = 135 tons
4: (442.8-35.6 * 8) / 15.8 = 10 sheets
5: (1) x: 350 = 3: 7 x = 150g
(2) 3:4 = 12: x = 16 g
6： x：36=5:9 x=20
（n+20）/（n+36）=11/19 n=2
36 + 2 = 38
7: (1) 0.025 * 24 * 10000 = 5000 yuan (2) 0.025 * 12 * 10000 + (0.0225 * 12 * 10000 + 10000) = * 00225 * 12 = 6129 yuan
If 5000 yuan is less than 6129 yuan, it must be a good choice for the latter

It is known that the maximum value of vector M = (sin, 1), n = (root 3acosx, 2 / 2 acos2x) function f (x) = m · n is 6

fx=m.n=sinx√3Acosx+ (A/2)co2x=
f(x)= A[√3/2sin2x+(1/2)cos2x]
∵f(x)max=6.
That is, sin (2x + π / 6) = 1
∴A=6.

It is known that the first day is 1 / 2 of the second day. How much sand do you use in two days

If x tons of yellow sand are removed the next day, then:
(1/2)x=6
x=12
（1/2)x+x=6+12
=18(t)
A: it takes 18 tons to go to Huangsha in two days

Let the image of the function y = f (x) be symmetric with respect to the line x = 1. If x ≤ 1, f (x) = (x + 1) 2-1, then f (x) is equal to ()
A. f（x）=（x+3）2-1B. f（x）=（x-3）2-1C. f（x）=（x-3）2+1D. f（x）=（x-1）2-1

When x = 1, f (1) = 3 and ∵ the image of the function y = f (x) is symmetric with respect to the straight line x = 1 ∵ when x ≥ 1, the point (1,3) is also substituted on the function image to exclude a, C and D, so B is selected

There are 50 RMB with one yuan, two yuan and five yuan. The total face value is 116 yuan. There are two more RMB with one yuan than two yuan. How many RMB with three face values?