Unit conversion master look here! Please tell me the rate of each unit! 2.2 hours = () hours () minutes 42600 M2 = () ha () m2 7 square meters 6 square centimeters = () square meters = () square centimeters 1.08 t = () t () kg

Unit conversion master look here! Please tell me the rate of each unit! 2.2 hours = () hours () minutes 42600 M2 = () ha () m2 7 square meters 6 square centimeters = () square meters = () square centimeters 1.08 t = () t () kg

1 hour = 60 minutes
1 ha = 10000 M2
1 sq m = 10000 sq cm
1 square centimeter = 0.0001 square meter
1 ton = 1000 kg
2.2 hours = (2) hours (12) minutes
42600 M2 = (4) ha (2600) m2
7 square meters 6 square centimeters = (7.0006) square meters = (70006) square centimeters
1.08 t = (1) t (80) kg
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How does 12345 add subtract multiply divide equal 11
(4*5+(3-1))/2
4+5+1+3-2
...
In fact, there are many more, but why don't you think about such a simple topic?
Oh, yes
4+5+1+3-2
The arithmetic sequence A1 = 1, the sum of the first n terms satisfies s (2n-1) / Sn = (4N + 2) / N + 1
1. Find the general term an
2. Let BN = 1 / Sn, find the first n terms and TN
Today, our teacher changed the topic, s (2n-1) / Sn = (4n-2) / N + 1
If there is something wrong with the title, please look at it again
When n = 1, S1 / S1 = 3
Should be = A1 / A1 = 1
Unit conversion of meter, decimeter, centimeter, millimeter, micron, nanometer
546mm= cm= dm= km
6.5km= m= cm= nm
0.025m= dm= cm= mm
546mm=54.6cm=5.46dm=0.000546km
6.5km=6500m=650000cm=6.5*10^12nm
0.025m=0.25dm=2.5cm=25mm
546mm=54.6cm=5.46dm=0.000546km
6.5km=6500m=650000cm=6.5*10^12nm
0.025m=0.25dm=2.5cm=25mm
546mm=54.6cm=5.46dm.0.000546km
6.5km=6500m=650000cm=6500000000000nm
0.025m=0.25dm=2.5cm=25mm
Sorry, I won't,
I sorry
Five hundred and seventy-two
Add, subtract, multiply and divide between 12345 and 12345 in brackets. The result is equal to 1
The answer is (1 + 2) * 3 - (4 + 5)
1+2-(3+4-5)=1
Senior high school mathematics: let the sum of the first n terms of the arithmetic sequence (an) be Sn, known as A3 = 24, S11 = 0. Find the general formula of the sequence (an) and the maximum value of Sn!
A3=24,S11=0.
Then a1 + 2D = 24, 11A1 + 11 * 10 * D / 2 = 0,
The solution is: A1 = 40, d = - 8
So an = a1 + (n-1) d = 48-8n
The first 5 items are negative, and the next 6 items are positive,
So the maximum value of Sn is S5 = S6 = 120
S11=(a3-2d+a3+8d)*11/2
The solution is d = - 4
An=36-4n
When n = 8 or 9, Sn is 144
A3=A1+2D=24; S11=11A1+55D=0
By solving the equations, A1 = 40, d = - 8
An=A0-3n
The maximum value of Sn is 33
S(n)=48-8n,maxS(n)=120
Let the first term of sequence (an) be A1 and the tolerance be D, then an = a1 + (n-1) d, Sn = Na1 + n (n-1) d / 2
Substituting A3 and S11 into: A1 = 40, d = - 8, then the general formula of (an) is:
An=48-8n
Obviously, A6 = 0, so the maximum value of Sn is S5 or S6 is 120
A3=A1+2D=24
S11=11*(A1+A1+10D)/2
11*(A1+5D)=0
11(24+3D)=0
D=-8
A1=40
AN=40-8(n-1)=-8n+48,A5=8,A6=0
S6=S5=5*(48+8)/2=140
S11=(A3+A8)*11/2=0
Then A3 + A8 = 0
A8=-24
d=(A8-A3)/5=-9.6 A1=A3-2d=43.2
An=A1+(n-1)d=43.2-9.6(n-1)
Sn=A1*n+(n-1)n*d/2=43.2n-4.8(n-1)n=-4.8n+48n*n
How many nanometers is the length unit converted to 1 mm?
1000000 nm = 1 mm (mm)
12345 addition, subtraction, multiplication and division each time, and only once, finally equal to 28 how to calculate!
(3+4)×（5-1）÷1=28
Do you have to follow the order of 12345
Let the sum of the first two terms of Sn = 3 be known
Finding the general formula of {an} series
When the value of n is, Sn is the maximum, and the maximum value of Sn is obtained
Because a1 + a11 = A3 + A9
So S11 = (a1 + a11) * 11 / 2 = (A3 + A9) * 11 / 2 = (24 + A9) * 11 / 2 = 0
So A9 = - 24
So d = (a9-a3) / 6 = - 8
a1=a3-2d=24+16=40
So an = 40-8 (n-1) = - 8N + 48
an=-8n+48>=0
The solution is n
Who knows how to remember and convert the units from meter to nanometer
1m=10dm=100cm=10^3mm=10^6μm=10^9nm
Meter and millimeter, millimeter and micrometer, micrometer and nanometer are thousands of times, which means thousands of times (10 ^ 3)