Given that X is a random variable with E(X²) = 16 and Var(X)= 7; find E(X). (A) 9 (B) V3 (C) 3 (D) /23 (E) 23 Select one: O A.. О В.. С.. O D.. O E..

Q: 10

A: To simplify 35+710.

Q: 8.20+2

A:

Q: 7)84

A: The objective of the question is solve the division.

Q: 6.4 3

A:

Q: Find the circumference of each circle. Leave your answer in terms of T.

A: From the image of the circle, we see that the radius= 16 units

Q: 10) 21 68

A: We know that tan θ=Opposite sideAdjacent sidetan(68)=x21

Q: 72

A: here we will find value of x ,

Q: Suppose that 103 Σ ai = 19 and i=1 103 i=1 b₁ = 18. Compute the sum.

A:

Q: 8 14

A:

Q: 6. 5

A:

Q: 6. 6. х 14

A: Given: 9x=x14

Q: 29 14

A: It's trigonometric question so I'm providing hand written solution for better understanding.

Q: 8) 16 15

A: Answer is below

Q: 15 17 9.

A: We have to find b

Q: Find the circumference of each circle. Leave your answer in terms of T.

A: The circumference of a circle with radius r is 2πr.

Q: 3. Graphically Subtract (-1+i) from (3+2i)

A: If we have to subtract a vector b from another vector a, graphically, then we actually are adding…

Q: cothe 4

A: To find: The value of cothi3π4. Concept used: cothx=ex+e-xex-e-x eiaπ=-1a

Q: 5. 20 52

A:

Q: 4. 18 126 =

A:

Q: 4) 37 12

A:

Q: 2. tox²Sc.

A:

Q: 11 11 4. 64

A: Given: simplify the expression

Q: C. 11 10

A:

Q: 6. 4 Z+ 1 z+ 7 2.

A: Given,  4/(z + 1)  =  2/(z + 7)  To find value of z.

Q: 73

A:

Q: 3. n. logs

A: Given

Q: 5) 23

A: To find The other side of the given figure.

Q: 1. 12

A: We can use the concept of Pythagoras theorem to solve the given problem.