Set a = {y | X & # 178; + 2x, - 2 ≤ x ≤ 2} B = {x | X & # 178; + 2x-3 ≤ 0} take any element a in set a, then what is the probability that a belongs to B Eager for answers | Math enthusiast | Mathematical art

Set a = {y | X & # 178; + 2x, - 2 ≤ x ≤ 2} B = {x | X & # 178; + 2x-3 ≤ 0} take any element a in set a, then what is the probability that a belongs to B Eager for answers

Set a should be {y = x & # 178; + 2x | - 2 ≤ x ≤ 2}
So a is the interval [- 1,8]
And B is [- 3,1]
This is a geometric type
Probability = the length of a intersection B interval / the length of a interval = [- 1,1] / [- 1,8] = 2 / 9

RELATED INFORMATIONS

1. If M = {y | y = x2 + 1}, n = {y = | y = 3-x2}, then M intersects n =?
2. Given a = {(x, y) | x2 + y2-6x-8y + 20 = 0}, B = {(x, y) | kx-y-4k + 3 = 0}, then the number of elements of a ∩ B is () A. 0B. 1C. 2D. 3
3. If the set a {x | x + A / x2-4 = 1} is a single element set, then the value set of a is m= The teacher's answers were 2, - 2, - 17 / 4, but I wrote - 17 / 4 and - 4, X + a divided by the square of x minus 4 equals 1
4. How many real roots of equation 2x ^ 2-6x / (x-3) = x + 5
5. If x2-3x + 1 = 0, the value of fraction x2 / (x ^ 4 + x2 + 1) is Ask God for help!
6. . = = Lim 1 / (x ^ 2-3x + 2) find the limit value,
7. The limit of ((3x + 1) / (3 + x)) ^ (1 / (x-1)) when x tends to 1
8. If the equation of motion of a body is s = 7T ^ 2-13t + 8, then its instantaneous velocity at t = () is 1 Note: if the interval is | T, t + △ x |, then △ y = 7 △ x ^ 2 + 14T △ x + 7T ^ 2-13t-13 △ x + 8-7t ^ 2 + 13t-8 = 7 △ x ^ 2 + 14T △ x, then △ Y / △ x = 7 △ x + 14T, so 14T = 1, t = 1 / 14. But the answer is 1?
9. A math problem of Liberal Arts in senior two. (Application of derivative) A manufacturer manufactures and sells a kind of beverage in spherical bottles. The manufacturing cost of the bottle is 0.8 π R ^ 2, where R is the radius of the bottle, and the unit is cm. It is known that the manufacturer can make a profit of 0.2 points for every 1ml of beverage sold, and the maximum radius of the bottle that the manufacturer can manufacture is 6cm Q: (1) what is the radius of the bottle to maximize the profit of each bottle? (2) When the bottle radius is large, the profit of each bottle is the smallest? Please write the process, thank you
10. It is known that the derivative of F (x) is 2x ^ 2-4ax-3. If f (x) has and only has one extreme point in (- 1,1), the value range of a is obtained
11. Set a = {y | y = x & # 178; - 1, X ∈ r}, B = {y | y = - 2x & # 178; + 2, X ∈ r}, find a ∩ B Set a = {y | y = x & # 178; - 1, X ∈ r}, B = {y | y = - 2x & # 178; + 2, X ∈ r}, find a ∩ b set P = {y | y = 3x-1, X & gt; 1}, q = {y | y = - 2x & # 178; + 10, X ∈ r}, find P ∩ Q
12. Given the set a = {x │ - 1 ≤ x ≤ 2}, B = {y │ y = 2x-a, a ∈ R, X ∈ a}, C = {Z │ z = x & # 178;, X ∈ a} Is there a real number a so that C is included in B? If it exists, find out the value range of A. if it does not exist, explain the reason.
13. A mathematical problem in the first chapter of compulsory senior one: the square of quadratic function y = ax - 4x + a-3d for any x belongs to R, the value of Y is negative, find the range of A A mathematical problem in the first year of senior high school: the square of quadratic function y = ax-4x + a-3d for any x belongs to R, the value of Y is negative, and the range of a is calculated I'm sorry, there is a mistake in the title. If there is no D, it's a mistake! What is correct is a mathematical problem that must be solved in grade one of senior high school: the square of quadratic function y = ax - 4x + A-3. For any x belongs to R, the value of Y is negative, and the range of a is calculated
14. The equation of line passing through point (5,1) and tangent to circle "x square + y square = 25" is -
15. What is the linear equation passing through the point (- 1,2) and tangent to the square of circle x + the square of y = 5?
16. A mathematical problem about set in grade one of senior high school Set {(x, y) | y = x2-1, | x | less than or equal to 2, X belongs to Z} How to express it by enumeration,
17. One math problem in high school, about set The known set M = {x ∈ R / 5AX ^ 2-3x + 2 = 0, a ∈ r} If there is at most one element in M, find the value range of real number a Online and other answers
18. Given the set a = {- 4,2a-1, the square of a}, B = {a-5,1-a, 9}, whether there is a real number a such that there are four elements in the set a and B, and calculate the value of A
19. Given the equation 3x + 3 (x + 2) = 24, please write a mathematical problem (to be practical) and solve it
20. Given the equation 3x + 3 (x + 2) = 24, please write a mathematical problem (to be practical) and solve it