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How many kilos is 56 tons
56 × 1000 = 56000kg
100 divided by 56 minus 49 plus 2 / 78 is equal to?
25765/546
How to convert between meter and cubic meter
The meter is the unit of length and the cubic meter is the unit of volume
Several questions about multiplication formula~
1. Compare the size of (a + B + C) ^ 2 and 3 (a ^ 2 + B ^ 2 + C ^ 2)
2. If a + B = 1, find the value of a ^ 3 + B ^ 3 + 3AB
3. If a + B = 5, a ^ 3 + B ^ 3 = 50, find the value of a ^ 2 + B ^ 2
4. It is known that a + 1 / a = 5
Find 1). The square of a ^ 2 + a
2) One cubic of. A + A ^ 3
5. Prove that the square difference of two consecutive integers is an odd number
The triple integral ∫ ∫ ∫ Ω zdxdydz is calculated, where Ω is the region bounded by three coordinate planes and plane 2 / x + y + Z = 1
Ω is the area bounded by three coordinate planes and plane X / 2 + y + Z = 1,
Primitive = ∫ ZDZ ∫ dy ∫ DX
=∫zdz∫2(1-y-z)dy
=∫z[2(1-z)^-(1-z)^]dz
=∫(z-2z^+z^3)dz
=[(1/2)z^-(2/3)z^3+(1/4)z^4]|
=1/2-2/3+1/4
=1/12.
How many meters per second is 70 kilometers per hour
70 km / h = 70000 / 3600 = 700 / 36 = 175 / 9 m / S = 19.44 M / S
Calculation: 76 ° 36 '+ 69 ° 65'180 ° - 23 ° 17'57 "19 ° 37'26' × 9 43 ° 13'28 '/ 2-10 ° 5'18‘‘
1）76°36’+69°65’
2）180°-23°17’57’’
3）19°37'26”×9
4）43°13'28”÷2-10°5'18”
76°36′+69°65′
=(76°+69°)+(36′+65′)
=145°+101′
=145°+60′+41′
=145°+1°+41′
=146°+41′
=146°41′
180°-23°17′57″
=179°59′60″-23°17′57″
=(179°-23°)+(59′-17′)+(60″-57″)
=156°+42′+3″
=156°42′3″
19°37′26″×9
=(19°+37′+26″)×9
=19°×9+37′×9+26″×9
=171°+333′+234″
=171°+300′+33′+180″+54″
=171°+5°+33′+3′+54″
=176°+36′+54″
=176°36′54″
43°13′28″÷2-10°5′18″
=(42°+60′+12′+60″+28″)÷2-10°5′18″
=(42°+72′+88″)÷2-10°5′18″
=(42°÷2+72′÷2+88″÷2)-10°5′18″
=(21°+36′+44″)-10°5′18″
=21°36′44″-10°5′18″
=(21°-10°)+(36′-5′)+(44″-18″)
=11°+31′+26″
=11°31′26″
What is the eccentricity of an ellipse cut by a plane at an angle of 30 degrees to the bottom of the cylinder
\What is the eccentricity of the circle when the section of the cylinder is an ellipse? What is the area of the figure enclosed by the locus of the point in the plane rectangular coordinate system whose distance to the two coordinate axes is 2
The major axis of the ellipse is 2A = 2R / cos 30 ° and the minor axis is 2B = 2R
Easy to get a = R / cos 30 ° = 2R / √ 3, short half axis B = R
The focal length C = √ (a ^ 2-B ^ 2) = R / √ 3, e = C / a = 1 / 2
I'm sorry. I don't know the second question
There are two small rectangles 5 cm long and a cm wide to form a large rectangle. What is the area of this large rectangle? When a = 4, what is the area of this large rectangle?
(1) The area of this large rectangle is: 5A × 2 = 10A (square centimeter). A: the area of this large rectangle is 10A square centimeter. (2) when a = 4, 10a = 10 × 4 = 40 (square centimeter). A: the area of this large rectangle is 40 square centimeter
If the sum of solutions X and y of the system of equations 2x + 3Y = 4k5x − 9y = − K is greater than 5, the value range of K is obtained
2X + 3Y = 4K ① 5x − 9y = − K ②, ① × 3 + ②: 11x = 11K, that is, x = k, substituting x = K into ①: y = 23K, according to the meaning: x + y = K + 23K > 5, the solution: k > 3
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