(-c^2)^2n

C ^ 4N. Is the 4N power of C

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1. 1. It is known that if the remainder of an angle is equal to 5 / 11 of its complement, then the angle is equal to () 2. It is known that the line AB and CD intersect at point O, the angle AOD = 2, the angle AOC, the angle OE bisecting the angle BOD, then the angle AOE = () degrees? 2X + 3 power of 3.2 - 2x + 1 power of 2 = ()?
2. If the angle of the first turning is ∠ B at 75 degrees, the angle of the second turning is ∠ C at 110 degrees, and the angle of the third turning is ∠ D, then the road De is just parallel to the road AB before the first turning, then the degree of ∠ D should be_____ degree
3. It is known that OC divides AOB into two parts and the following equation holds: (1) ∠ AOC = 1 / 3 right angle + 1 / 3 BOC (1) ∠ BOC = 1 / 3 flat angle - 1 / 3 AOC Question: (1) What is the location relationship between OA and ob? (2) Is OC the bisector of ∠ AOB? And write the judgment reason. (required) (self drawing) Be sure to write reasoning
4. If n is a positive integer and X2N = 7, then the value of (3x3n) 2-4 (x2) 2n is () A. 833B. 1225C. 2891D. 3283
5. Super difficult math problems in Volume 2 of junior high school Given m ^ 2 + 2m-1 = 0, find one of m ^ 2 + m ^ 2
6. A divided by (a-b) = 2, find (A & sup2; + AB) (a-5b) divided by (a-b) (A & sup2; - 5ab)
7. The total land area of the world is about 14900 square kilometers, and Asia accounts for 29.5%. Asia has a population of 4.07 billion people. Q: how many square kilometers of land area does each person occupy The total land area of the world is not 14900 square kilometers, it is 1490 million square kilometers!
8. There is a section of uphill and a section of level road from a to B. if the uphill is 3km per hour, the level road is 4km per hour, and the downhill is 5km per hour, then it takes 54 minutes to go from a to B and 42 minutes to go from B to A. what is the total distance from a to B? I think the answer is: 54 minutes = 0.9 hours, 42 minutes = 0.7 hours, the time for leveling is x hours. The equation is: 3 (0.9-x) + 4x = 4x + 5 (0.7-x) to get x = 0.4 hours, the whole journey is 3.1 km
9. A happy Frenchman was traveling in Russia. He took some money with him and came to a restaurant. He borrowed the same amount of money from the owner of the restaurant and spent one rouble. With the rest of the money, he went to the second hotel, where he borrowed the same amount of money and spent one rouble. Then he went to the third and fourth hotels and did the same thing, When he came out of the fourth restaurant, he had nothing left. How much did the cheerful Frenchman have?
10. Uncle Zhang walked 20 kilometers in three hours. How many kilometers per hour on average? Expressed in fractions 2. Jiang Li used six pieces of paper to fold eight thousand paper cranes, and the Palace used eight pieces of paper to fold six thousand paper cranes How many pieces of paper does Jiang Li use per thousand paper cranes? Who folded a thousand paper cranes?
11. 1 points 2 + 2 points 2 + 3 points 2 + &_; &; &; 99 points 2 + 100 points 2=
12. (1+2+ 3+•••+99+100)×12345=?
13. Calculation: (+ 1) + (- 2) + (+ 3) + (- 4) + +（+99）+（-100）
14. 1 times 2, 2 times 3, 3 times 4.99 times 100. Calculate the sum of the reciprocal of the first 99 terms
15. 1*2,2*3,3*4,4*5,5*6,…… 99 * 100, the reciprocal sum of the first 99 items
16. Find the reciprocal sum of 1 * 2,2 * 3,3 * 4.99 * 100
17. 11×12+12+13×14+.+99×100,
18. 13+115+135+163+199+1143=______ ．
19. Sixth grade math problem / (1 * 2) + 1 / (2 * 3) + 1 / (3 * 4) + 1 / (4 * 5) + 1 / (5 * 6) +. + 1 / (99 * 100) =? 1/(1*2)+1/(2*3)+1/(3*4)+1/(4*5)+1/(5*6)+......+1/(99*100)=?
20. It's better to have a formula and why, 3Q 1. There are eight numbers in a row. If the average number of the fifth number on the left is 36, and the average number of the fifth number on the right is 34, and the average number of these eight numbers is 32, then what is the average number of the middle two numbers? 2. The average number of the three numbers of a, B and C is 150, the number of a is 48, the number of C is the same as that of B, and the number of B? 3, In order to make the average score of the four games 145, how many points should she get in the fourth game? 4. The average of the five numbers is 11. After changing one of the five numbers to 3, the average of the five numbers is 8. What is the original number? 5. Li Na, Wang Lei and Zhang Rui bought 10 loaves of bread. They shared the bread on average. Li Na took out the money for six loaves and Wang Lei took out the money for two loaves, Zhang Rui doesn't have any money with him. After eating, Zhang Rui should take out 1.25 yuan and ask Li Na how much yuan she should take back. 6. The average score of a class is 85.13 points according to the statistics of Chinese test results. The review found that Wang Lu's 87 points are wrongly written as 78 points. After recalculation, the average score of the class is 85.31 points. How many students are there in the class?