The distance from Miss Li's home to school is 3 kilometers. It takes 35 minutes to walk, 10 minutes to ride an E-bike and 6 minutes to take a bus. How many kilometers do you walk, ride an E-bike and take a bus every minute?

The distance from Miss Li's home to school is 3 kilometers. It takes 35 minutes to walk, 10 minutes to ride an E-bike and 6 minutes to take a bus. How many kilometers do you walk, ride an E-bike and take a bus every minute?

3/35=0.086
3/10=0.3
3/6=0.5

If 2 × 8nth power × 16nth power = 4 to the 11th power, then n = ()

2·8^n·16^n=4^11
2·2^(3n)·2^(4n)=2^22
2^(7n+1)=2^22
7n+1=22
7n=21
n=3
If 2 × 8nth power × 16nth power = 4 to the 11th power, then n = (3)

How to use the right hand rule to judge the direction of the third vector by cross multiplication of two vectors

For example, vector a × vector b = vector C
Suppose vector a turns to vector B at an angle less than 180 degrees
Point the four fingers of the right hand in the direction of vector a. the bending of the four fingers of the right hand represents the above rotation direction, and the straight thumb points to their vector product C

Class 21 is going to rent a car to visit the science and Technology Museum. There are two teachers and 30 students. Can we rent the bus below

Students and teachers a total of 32 people, as long as the number of bus seats greater than or equal to 32, you can sit

Given that f bracket x minus one is equal to x square plus x, find the analytic expression of FX plus one

f(x-1)=x^2+x
Let t = X-1
Then x = t + 1
So f (T) = (T + 1) ^ 2 + (T + 1) = T ^ 2 + 3T + 2
That is, f (x) = x ^ 2 + 3x + 2
So f (x + 1) = (x + 1) ^ 2 + 3 (x + 1) + 2 = x ^ 2 + 5x + 6
If you don't understand, I wish you a happy study!

A1 = 3, sequence a (n-1) = 3A (n) - 2.3, n power + 1, find an

a(n+1)=3a(n)-2*3^(n+1)
a(n+1)/3^(n+1)=a(n)/3^n-2
So the sequence {a (n) / 3 ^ n} is an arithmetic sequence
The first term is a (1) / 3 ^ 1 = 3 / 3 = 1, and the tolerance is d = - 2
So a (n) / 3 ^ n = 1 + (n-1) * - 2 = 3-2n
So a (n) = (3-2n) * 3 ^ n
If you don't understand, I wish you a happy study!

I'm looking forward to your coming to see me
Using I am looking forward to

I'm looking forward to your visit

The area of Tiananmen Square is about 440000 square meters______ Mu

440000 square meters = 440000 square meters, 440000 × 0.0015 = 660 mu

In order to make the power 0 of (x + 3) + the power - 2 of (X-2) meaningful, what conditions should the value range of X satisfy?

x≠2
Because the - 2 power of (X-2) is 1 / 2 of (X-2) & sup2
Where the denominator cannot be 0, so X-2 is not 0
That is, X ≠ 2

How to write surprise English words,

surprise