1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Paladinen [302]
3 years ago
11

A mouse walks in a maze that is an orthogonal grid made of corridors that intersect at crossings one foot apart, stopping at eve

ry intersection. Using coordinates (with units in feet), it starts at the origin, then moves equally likely up to (0, 1) or down to (0, −1) or right to (1, 0) or left to (−1, 0) by one unit until the next crossing. Then it stops, picks another random direction (up, down, right or left) equally likely and moves by another unit till the next crossing. Every time it stops, its position is a vector (a, b) where both a and b are integers. Scientists let the mouse walk n feet, after which its position is (X, Y ) and it is at distance D from the origin (D = √ X2 + Y 2).
a) What is Cov(X,Y)?
b) Are X and Y independent?
c) What is E(DP)?

Mathematics
1 answer:
aksik [14]3 years ago
5 0

Answer:

See the attached file for the answer.

Step-by-step explanation:

See the attached file for the explanation.

You might be interested in
Solve: one seventh + nine fourteenths = _____
weqwewe [10]

Answer: 11/14, also known as eleven fourteenths

Step-by-step explanation:

Hope this helped ! :)

3 0
3 years ago
I will give brainliest to the best answer.
aniked [119]

Given that two digit numbers are used and one digit is drawn randomly.

Sample space = {10,11,...99}

n(S) = 90

32 is only one number favorable

Hence P(32) = 1/90

----------------------------

Odd numbers are exactly 45.

Hence prob (odd number) = 45/90 = 1/2

-------------------------------------

Multiples of 5 are 10,15,.....95

There are exactly 18 numbers.

Hence P(a multiple of 5) = 18/90 =1/5

Have an amazing day! <3

7 0
3 years ago
Which of the following are solutions to the equation below? Check all that apply. 4x2 - 12x + 9 = 5​
Anika [276]

Step-by-step explanation:

4x² - 12x + 9 = 5 → 4x² - 12x + 4 = 0 → x² - 3x + 1 = 0

∆ = b² - 4ac → ∆ = (-3)² -4(1)(1) = 9 - 4 = 5

x = (-(-3) ± √5)/2(1) = (3 ± √5)/2

x² - 3x + 1 = 0 → (x - 3/2)² - 9/4 + 1 = 0 → (x - 3/2)² = 5/4 → x - 3/2 = ±√5 / 2 → x = ½( 3 ± √5)

4 0
3 years ago
A person who can afford a monthly payment of __________ and signed a mortgage with a monthly payment of __________ was most like
Ipatiy [6.2K]

Answer:

A . 900-1000

Step-by-step explanation:

5 0
2 years ago
Evaluate f(2)=-3x+1
bearhunter [10]
The correct answer is -5
4 0
3 years ago
Read 2 more answers
Other questions:
  • Suppose a researcher is interested in understanding the variation in the price of store brand milk. a random sample of 36 grocer
    14·1 answer
  • Simplify 3^2 + 1 * 2
    12·2 answers
  • (9.5) - (-4.36) (1.094)
    13·1 answer
  • Which number is a prime number?​
    11·2 answers
  • The ratio of boys to girls on rowans swim team is 2:3.if there are 40 total swimmers on the team,how many of them are girls?
    9·1 answer
  • How to do this T-T?
    5·1 answer
  • Help please due today!!
    11·1 answer
  • Two years ago the Delhi metro track's length was 200km long. The new track length increased by 20%.
    10·1 answer
  • Farid performed a chemistry experiment in which he divided 2/3 of a box of baking soda evenly among 4 bottles. He then added vin
    5·1 answer
  • (2^7 .〖 5〗^8)/〖10〗^7
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!