Tom K.

01/08/22

statistics probbality data analysis

An airline is deciding how much to overbook a flight. The plane has 175 seats. Historically, 95 percent of those with a reservation will actually show up. The airline charges $500 for each seat on... more

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Math Probability Maths

01/06/22

Password Combination

Here is the answer I want to ask... Please help to solve this question.The password of a system consists 3 capital letters selected from A-Z. Repetition use of any letters is allowed. Find the... more

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Algebra 2

01/05/22

Is P (3,5) on y=2x-1 closet to A (−2, 7)?

After drawing the line y = 2x − 1 and marking the point A = (−2, 7), Kendall is trying to decide which point on the line is closest to A. The point P = (3, 5) looks promising. To check... more

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Statistics Probability

01/03/22

Card game - spades

In the card game Spades each player is dealt 13 cards. The player with the 2 of clubs starts the game and plays that card. The person to the left then plays their lowest club, followed by the next... more

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Statistics

01/02/22

In a bag of 100 chips, three are black. If 6 chips are drawn from the bag, what is the chance that a black one will be drawn?

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Discrete Math Discrete Mathematics

01/02/22

Set Theory: A is a subset of B. Prove that C - B is subset of C - A

A ⊆ B. Prove that C - B ⊆ C - A.My approach:Take element k ∈ C - B. This means that k ∈ C and k ∉ B. Since k ∉ B then k ∉ A because A ⊆ B. It's also true that k ∈ C - A because k ∈ C and k ∉ A.... more

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Elementary Math

01/01/22

Primary 5 (11 yo) Math Question

There are 4 times as many red buttons as blue buttons. After removing 415 red buttons and 46 blue buttons, the number of blue buttons is 3 times as much as red buttons. Find the number of red... more

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Precalculus

01/01/22

if F(0)= cos0 and f(a) = -3/4 what is the exact value of f(-a)?

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Statistics Probability

12/31/21

Card game - Spades

In the card game Spades each player is dealt 13 cards. The player with the 2 of clubs starts the game and plays that card. The person to the left then plays their lowest club, followed by the... more

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Trigonometry

12/29/21

A triangle has a base of 8 inches and sides of 3 and 6 inches. What is the height of the triangle? Round to the nearest hundredth.

Answer: The height is approximately ____________in.

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Statistics Probability Markov Chain

12/28/21

How to use the Recursive method to calculate the average number of times that the Markov chain visits a given state ?

Dear expert,In the insight of what mentioned in the appendix of this article,https://link.springer.com/article/10.1007/s11538-011-9638-4My question is, if we already have the transition probability... more

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Calculus

12/27/21

Let the function f be define as

f(x) = cos(3 arcsin x). Determine f(100)(0).

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Ap Statistics

12/24/21

AP Statistics help? Free response question

Andrea and Ashley are middle-distance runners for their school's track team. Andrea's times in the 400-meter race are approximately Normally distributed with a mean of 62 seconds and a standard... more

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Ap Statistics

12/24/21

AP Stats help? Free Response question (2 parts)

On the Centerville High School debate team, 20% of the members are Sophomores, 35% are Juniors and 45% are Seniors. A team member is selected randomly to give the closing argument for the team. If... more

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Probability Statics

12/23/21

STSSTTTSST is a string of letters which does not include the consecutive letters STTS. How many more strings of ten letters that do not include the consecutive letter STTS?

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Calculus

12/21/21

Is the given statement is true or false? Justify your answer.

If f"(c) = 0, then (c, f(c)) is an inflection point of the curve y = f(x)

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Calculus

12/20/21

Solve the following problem step by step

Find the coordinates of the point where the graph of f(x)= (2x3 –4x2 –10x+12)/(x2-11) crosses its slant asymptote and explain the prócedure thoroughly.

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Calculus

12/20/21

Evaluate the limit of a function

Does lim(x4– 4y2 )/(x2+2y2) as (x,y)→(0,0) exist? Explain your answer.

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Calculus

12/18/21

Find the curvature of y^2 + x^3= 0 at (-1,1)

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Probability

12/18/21

Probabilities of draws without replacement

A box contains 5 red balls and 7 orange balls. If Tim chooses 6 balls at random from the box, what is the probability that he will select 4 red balls and 2 orange balls? Round your answer... more

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