Let two sets of complex numbers a = {Z | z = a + I (1-A ^ 2), a ∈ r} Let two sets of complex numbers a = {Z | z = a + I (1-A ^ 2), a ∈ r}, B = {Z | z = sin θ + I * (M - (√ 3 / 2) sin 2 θ)}, m ∈ R, θ∈ [0, π / 2], if a ∩ B is not equal to the empty set, find the value range of real number M

Let two sets of complex numbers a = {Z | z = a + I (1-A ^ 2), a ∈ r} Let two sets of complex numbers a = {Z | z = a + I (1-A ^ 2), a ∈ r}, B = {Z | z = sin θ + I * (M - (√ 3 / 2) sin 2 θ)}, m ∈ R, θ∈ [0, π / 2], if a ∩ B is not equal to the empty set, find the value range of real number M

Given the complex z = (m-1) + (/ 2m-1 / - 2) I (m ∈ R), the corresponding point on the complex plane is located in the third quadrant. Find the value of M and write down the specific point
It is known that the point corresponding to the complex z = (m-1) + (/ 2m-1 / - 2) I (m ∈ R) on the complex plane is in the third quadrant. Find the value of M and write it down

In the third quadrant, (x, y), X is less than 0 and Y is less than 0, so M-1

On the problem of n-th root
If a is the square root of root 81, then the fourth root of a is
What is the quintic root of 20
The fourth root of 20 is
-The n-th root of 2 is negative, the n-th root of 2, n is negative
The n-th root of 2 is positive or negative, the n-th root sign 2, n is negative

1. A = 9, plus or minus 4 root sign 9
2. 5 times root 20
3. Plus minus 4 root sign 20
4. N is a positive odd number
5. N is a positive even number

There is a batch of goods in the warehouse. The weight ratio of the goods transported away and the remaining goods is 2:7. If another 64 tons are transported away, the remaining goods are only the original goods in the warehouse
Please explain in detail! Thank you

If all the goods in the warehouse are of the same kind, the weight ratio can be the same. If you make an equation, you'd better determine what XY represents. After 88 tons are transported, there are still 8 / 8 left. Then, the proportion of 88 tons is 8 / 9-8 / 8. Naturally, 811% of the actual data can be calculated

If we know that the solution set of inequality kx-2 > 0 (k is not equal to 0) about X is x > 3, then it is the intersection of the line y = - KX + 2 and X axis

kx-2>0
kx>2
x>2/k
2/k=3
k=2/3
y=-kx+2
y=-2/3x+2
Let y = 0
-2/3x+2=0
x=3
The intersection point is (3,0)

The charging standard of tap water for residents is as follows: each household uses less than 4 tons of water per month, which is 1.8 yuan per ton. When it exceeds 4 tons, the excess part is 3 yuan per ton______ Yuan

The receivables of two households less than 4 tons: 1.8 × (4 + 4) = 14.4 (yuan), the water consumption of two households more than 4 tons in this month: (26.4-14.4) △ 3 = 4 (ton), the water consumption of Party B: (4 + 4 + 4) × 35 + 3 = 4.5 (ton), the water fee payable by Party B: 4 × 1.8 + (4.5-4) × 3, = 7.2 + 1.5, = 8.7 (yuan); answer: the water fee payable by Party B is 8.7 yuan

If the weight of the two kinds of rice is the same, which one will produce more rice?
(there must be a formula)

Calculate the weight of rice per unit of rice
84/120=0.7
117/180=0.65
So there are a lot of them

Nine and seven tenths minus one and three fourths minus four. How is it easy to calculate

The original formula is nine and seven tenths - one and three fourths - thirty seven fourths
=Nine and seven tenths - (one and three forties + thirty seven forties)
=Nine and seven tenths - two
=Seven and seven tenths

Xinhua Bookstore brought in a batch of new books and sold 3 / 8 of them, leaving 1350 copies. How many new books have been sold?

810 new books sold

In ancient times, 20 men were called men___ 30 years old____ 50 years old____ 60 years old____ 70 years old___ At the age of 100____ The year of

In ancient times, 20 is the year of weak crown, 30 is the year of standing, 50 is the year of knowing one's life, 60 is the year of flower, 70 is the year of rare things, and 100 is the year of hope
Under one year old - swaddling;
3 years old - childhood;
The girl is 7 years old;
Boys are 8 years old;
General term for childhood: total horn;
Under the age of 10 - yellow mouth, that is, the childish children do not take off on behalf of also;
13-15 years old -- the year of dancing spoon;
15-20 years old - the year of dancing elephant;
12 years old (female) - the year of Jin Chai;
13 years old (female),
15 years old (female) - and hairpin year;
15 years old (male)
16 years old (female) - years of broken melon, years of Jasper, years of 28;
20 years old (female) - Taoli Nianhua;
Hua xinnianhua, 24 years old (female);
To get married -- the year of Mei, the year of Biao Mei;
To 30 years old (female) - half old Xu Niang;
20 years old (male) - weak crown;
30 years old (male) - 30 years old;
In the prime of life, spring and autumn flourished;
40 years old (male) - the age of no doubt, the age of strong;
50 years old: more than half a hundred years old, the year of knowing wrong, the year of knowing life, the year of Ai Fu, the year of Dayan;
60 years old: Huajia, pingtoujiazi, the year of Ershun, the year of Zhangxiang and the year of Huanli;
70 years old: the year of the ancient and rare, the year of the state of the staff, the year of the government, the year of the heart and the year of the suspension;
80-90 years old: the oldest old;
90 years old;
The age of 100 - Qiyi, also known as "Renrui"