Observe the law of half, negative quarter, eighth, negative sixteenth and thirty second, and point out what is the 30th number

Minus 1 / 2 ^ 30

RELATED INFORMATIONS

1. The ratio of adult's blood mass to body weight is about 1:13. Uncle Li's weight is 65kg. How many kg of blood is there in his body
2. 8 times of a number is 10.8 times more than 6.5 times of it. What's the number? (use equation to solve)
3. If the least common multiple of a and B is 60, then C = 1___ ．
4. (log36(4))/log18(6)+log^2 6(3)=
5. It is known that log189 = a, 18b = 5, and log3645 is represented by a and B
6. Given that log18 (3) = a, 18 ^ B = 5, try a, B for log36 (45)=
7. Log a 2 + log a 2 / 1 log3 18-log3 2 2log5 25-3log2 64 Given LG2 = a, Lg3 = B, find the values of the following formulas 1.lg6 2.log3 4 3.log2 12 4.lg2 3 / 2 Given the logarithm of X, find X 1.lgx=lga+lgb 2.loga x=loga m-loga n 3. Lgx = 31gn LGM 4. Loga x = 1 / 2 loga b-loga C I'm sorry for the last question 2log5 10+log5 0.25
8. How to simplify log (2x) + log (3Y) - log (2Z)? Log3 (x ^ 2-2x-6) = 2 log (3x + 6) = 1 + log (x) is solved
9. Let p be any point on the curve y = x3-3x + 23, and the tangent inclination angle at P is α, then the value range of angle α is () A. [0，π2)∪[23π，π)B. [0，π2)∪[56π，π)C. [23π，π)D. (π2，56π)
10. If point P moves on the curve y = x3-3x2 + (3-3) x + 34 and the inclination angle of the tangent passing through point P is α, then the value range of angle α is () A. [0，π2）B. [0，π2）∪[2π3，π）C. [2π3，π）D. [0，π2）∪（π2，2π3]
11. How many meters is three feet eight
12. If the solution of the inequality system X ＞ 2m + 1 x ＞ m + 2 is x ＞ - 1, then the value of M is () A. - 1B. - 3C. - 1 or - 3D. - 1 < m < 1
13. Simple calculation of 49 × 49 + 49
14. Calculation. (1) 2xy-1 / 2x ^ 3 + 2XY + 0.5x ^ 3 + 1 / 2 (2) 3x + (- 5x ^ 3) - (- 2x) - 5x - (+ 3x ^ 2)
15. 15/4+()=()÷9/8=()*24=1 From the bottom
16. Solving cubic equation x ^ 3-3x ^ 2 + 2 with one variable
17. 1/3+1/15+1/35+1/63+/1+1/99=?
18. Solve the equation: ① x2-2x-8 = 0 (by formula method) & nbsp; & nbsp; ② 2x2-4x + 1 = 0 (matching method) ③ (x + 1) (x + 3) = 15 & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; ④ (Y-3) 2 + 3 (Y-3) + 2 = 0
19. The results are as follows: (1), 3.2 * (- 7 / 8) * (- 1.25) * (1 / 7) (2) (7 / 99 / 15) * 30 (3), (- 69 / 15) * 8 Using a simple method to calculate: (1), 3.2 * (- 7 / 8) * (- 1.25) * (1 and 1 / 7) (2) (99 and 7 / 15) * 30 (just two, not the third)
20. The general solution of the differential equation XY '+ y-e to the power x = 0 is y=