Simplification ratio: 5 square meters to 50 square decimeters

5 square meters: 50 square decimeters
=500 square decimeters: 50 square decimeters
=10：1

RELATED INFORMATIONS

1. The square of half B is reduced to
2. Known samples x1, X2 If the variance of XN is 2, then the sample is 3x1 + 2, 3x2 + 2 The variance of 3XN + 2 is______ ．
3. Data x1, X2 If the average of XN is 5 and the variance is 2, then 3XL + 2, 3x2 + 2 The average of 3XN + 2 is______ The variance is______ ．
4. A set of data x1, X2 The average of XN is 90, the variance is 13.5, then 3x1-80, 3x2-80 The average of 3xn-80 is______ The variance is______ ．
5. Given a set of data x1, X2 The variance of x 10 is s ^ 2 = 6, find another set of data 1 / 3x1,1 / 3x2 What is the variance of 1 / 3x10? That's x, subscript 1, and so on
6. If the average number of one set of data x1, X2, and X10 is 5, then the average number of another set of data X1 + 2, X2 + 2, and X10 + 2 is 5
7. Given a set of data x1, X2, X3, the variance of X10 is 2, and (x1-3) ^ 2 + (x2-3) ^ 2 + (x3-3) ^ 2 +... + (x10-3) ^ 2 = 120, find the average X
8. Given a set of data x1, X2 The average of x1, X2, X3 is a, x4, X5, X6 , the average of X10 is B, then the average of this set of data is () A. a+b2B. 3a+7a10C. 7a+3b10D. a+b10
9. It is known that the average and variance of a group of data x1, X2... And X10 are 3 and 2, respectively. Then the average and variance of another group of data 2x1-1, 2x2-1... And 2x10-1 are respectively 3 and 2
10. The variance of data x1, X2, and X10 is 2 (x1-3) square + (x2-3) square +,,, + (x10-3) square = 120 to find the average of X
11. Simplification ratio: 4 / 5 kg: 30 g, 5 cm: 0.1 M, 1 / 3 h: 0.3 M2: 750 M2
12. 100 square decimeter: 1 square meter. 2 tons: 250 kg reduction ratio
13. One half square meter = () square decimeter, three tenths of a ton = () kilogram, three fourths of a hour = () minute, four fifths of a second = () 10 × 7 / 15=
14. Representation of set {2,4,6,8} by description Little brother, just on the road, not many points So {x | x = 2,4,6,8} right? Which is right? I feel right
15. The set {(0,3), (3,0), (1,2,), (2,1)} is represented by description
16. The set {1,1 ／ 2,1 ／ 3,1 ／ 4} is represented by the description method, and {1,1 ／ 2,1 ／ 3,1 ／ 4} represents the fractional line, Can it be written as {x │ (x-1) (x-1 / 2) (x-1 / 3) (x-1 / 4)} Please say why,
17. The set 1 / 2,2 / 3,3 / 4,4 / 5 is represented by description,
18. The set {1,1 / 2,1 / 3,1 / 4} is represented by description,
19. Split term method (- 1000 and 2 / 3) - 999 and 5 / 6 - (- 2000 and 3 / 4) - 1 and 1 / 2
20. Negative two and a half times negative three and a third times negative one equals zero