Come (plural of noun)

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1. Is there any difference between plural noun and plural noun?
2. Are plural nouns the same as plural nouns
3. If the complex Z satisfies f (1-z) = 2z-i, find the square root of (24-7i) f (1-I)
4. (1-ni)(1+i)=(n+1)+(1-n)i This is an analysis of the answer, but I don't know how this formula changes, how it changes from left to right, and what rules are used
5. A simple plural problem Find all solutions of Z ^ 7-1 = 0 What is 1? I tell you it's | Z | Is | Z | = 1, z = 1? The one on the fourth floor is a little reliable, but it's wrong. Because if n can take any number, then it will definitely have more than seven roots, but whether it is a complex number or not, it can only have seven roots at most, so you can judge that you are wrong without looking at how you solve it. Even if you can draw infinite solutions in the complex plane, it is not infinite, it is just repetition.
6. A simple plural problem 1. Solve the equation: Z ^ 2 = Z (also called Z's conjugate complex number) 2. Or plural I + 2I ^ 2 + 3I ^ 3 +50i^50=? I can give you points,
7. 1. It is known that the complex numbers Z1 and Z2 satisfy 10z1 ^ 2 + 5z2 ^ 2 = 2z1z2, and Z1 + 2z2 are pure imaginary numbers. It is proved that 3z1-z2 are real numbers 2. The point corresponding to the complex Z 1 moves on the circle Z (the module of Z) which is equal to 1 in the complex plane. Find the locus of the point Z corresponding to the complex z = 1 + Z 1I
8. High school plural of a topic! Urgent online! The imaginary number W = a + bi, the complex number Z = (1 + I) ^ 3 (a + bi) / 1-I, and | z = 4, the range of | W + 2-2i | is known;
9. Given the complex number Z = 1-I, then Z & sup2; - 2Z / Z-1 equals ()
10. The plural form of apple
11. Both, either, neither, all take the noun as the subject, and the predicate is singular or plural?
12. There are 65 students in the chorus team, 15 more than twice the number of students in the dance team. How many students are there in the dance team To solve the equation
13. Here's the question: there are 48 boys and 36 girls in a class. Let the boys and girls line up separately. To make the number of people in each row the same, how many people are there at most in each row? How many rows are there for boys and girls?
14. A cement plant plans to produce 2400 tons of cement in November, and the actual production is 2520 tons?
15. The first four days, the fertilizer transported by car a just accounted for 14% of this batch of fertilizer, while car B transported 16 tons more than 20 tons of this batch of fertilizer. According to the original work efficiency, it took another five days to transport this batch of fertilizer. How many tons of this batch of fertilizer?
16. The plane flies between a and B cities, with the downwind speed of a kilometer per hour and the upwind speed of B kilometer per hour, It is an elementary equation of first degree
17. A and B drive from a and B at the same time. When a travels 3 / 7 of the way, B travels 36 kilometers. When a arrives at B, B travels 7 / 10. How many kilometers are there between a and B
18. If a car goes from place a to place B, it can arrive one hour ahead of time, It can arrive one hour in advance. How many kilometers are there between a and B? Do it in the way of primary school, speed up!
19. The mass ratio of the first and second baskets of apples is 5:2. Take 12 kg out of the first basket and give it to the second basket. The two baskets are the same weight. How many kg are there in the first basket? The big oil bottle contains 4kg oil in one bottle, and the small oil bottle contains 1kg oil in two bottles. Now there are 60 bottles of 100kg oil. How many large and small oil bottles are there?
20. Party A and Party B are traveling from a and B at the speed of 3 km and 5 km per hour respectively. After meeting, they continue to move forward. If a arrives at B from the meeting point Party A and Party B are traveling from a and B at the speed of 3km and 5km per hour respectively. After meeting each other, they continue to move forward, If it takes 4 hours for a to reach B from the meeting point, how many kilometers is the distance between AB and B? Using equation