Human blood accounts for 1 / 13 of body weight, 2 / 3 of blood is water, XXX weight is 39kg, how many kg does his blood contain water? Please write the formula in detail!

RELATED INFORMATIONS

• 1. 1 / 5 of a number is 2 more than 40% of 70. The solution of the equation is used to find this number
• 2. 15 out of 56 is the reciprocal of which two adjacent natural numbers
• 3. 5 (y-4) - 7 (7-y) = 12-3 (9-y) [15 - (7 / 9 + 5 / 6-1 / 3-11 / 18) × 18] / (- 6 / 5)
• 4. Given: a + B + C = 53, a + C + D = 54, a + B + D = 58, B + C + D = 60, what are the numbers of a, B, C and D?
• 5. Let the general term formula an of sequence an = - 1 times N, and the sum of the first n terms is Sn, then s2010=
• 6. How much is one in ten plus three in seven?
• 7. It is proved that the characteristic function of continuous random variable x is a real function if and only if its density function f (x) is symmetric, that is, f (x) = f (- x)
• 8. Find the rule 1.2,3,5,7,11, (), (), 19
• 9. Area definition of circle
• 10. Divide a 3-meter-long rope into 9 sections. How many parts of the length of each section? How many meters of each section? How many parts of 1 meter?
• 11. Fill in the numbers according to the rules. What is the hundredth number of 1, 1 / 2, 1 / 4, 1 / 8, 1 / 16?
• 12. How many meters is two feet nine
• 13. If the system of inequalities: 1 < x ≤ 2 x > m has a solution, then the range of M is a.m
• 14. Simple calculation of 49 + 49 × 49
• 15. 3x^2-[5x-(2/1x-3)+2x^2]=
• 16. 1 / 2 times (2 / 8 + 1 / 24 + 2 / 48... + 2 / 360)
• 17. The resultant range of three forces If the third force is not in the range of the first two forces, what is the minimum value of the resultant force If the third force is not in the range of the first two forces, it cannot be zero
• 18. How to find the range of resultant force of three forces
• 19. The three forces are 68.12n, and the resultant force range is calculated
• 20. The set of parallelograms Using characteristic property description method