05/21/20
Probability help please!
In random access communication protocols a population of users is contending for the use of a common channel to transmit their packets, without the control and supervision of a master station. In...
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05/19/20
Related Rates Calculus
Two airplanes fly eastward on parallel courses 12 km apart. One flies at 240km/h and the other at 300km/h. how fast is the distance between them changing when the slower plane is 5km farther east...
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05/19/20
Related Rates Calculus
A ladder is sliding down a wall. At the instant when the top of the ladder is 12m from the ground, the base of the ladder is sliding away form the wall at 6m/s and the top of the ladder is...
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05/19/20
Related Rates Calculus
A man is running over a bridge at a rate of 20 ft/sec while a boat passes under the bridge and immediately below him at a rate of 10ft/sec/ The boat's course is at right angles to the man's and is...
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05/19/20
probability question of 200 level course
Ninety identical electrical circuits are monitored at an extreme temperature to see how long they last before failing. The 50th failure occurs after 263 minutes. If the failure times are modeled...
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05/17/20
Find the distance from the point
Find the distance from the point (9, –2) to the line y = 3∕2x + 4.
A)
units
B)
units
C)
units
D)
units
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05/17/20
Solve the recurrence relation
Solve the recurrence relation 𝑎n=3𝑎n-1+2 where 𝑎1=1. (That is, provide a closed formula for the sequence.)
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05/17/20
Using separation of variables, solve the differential equation,
Using separation of variables, solve the differential equation,(3+𝑥^10)(𝑑𝑦/𝑑𝑥) = 𝑥^9/𝑦Use C to represent the arbitrary constant.y^2=_____________
05/17/20
How much work is required to lift a 700-kg satellite to an altitude of 1⋅106 m above the surface of the Earth?
How much work is required to lift a 700-kg satellite to an altitude of 1⋅10^6 m above the surface of the Earth? The gravitational force is F=GMm/r^2, where M is the mass of the Earth, m is the mass...
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05/16/20
How do you solve for t in 50 = 90sin(2pi*t / 26 + 3pi / 2) +115
50 = 90sin(2pi*t / 26 + 3pi / 2) +115I am not allowed to solve this by drawing a graph. Hence, I have to show working.I understand that I have to carry over the 115 and divide both sides by 90...
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05/16/20
A real doozy - which situation produces the highest expected roll?
The fifth edition of Dungeons & Dragons introduced a system of “advantage and disadvantage.” When you roll a die “with advantage,” you roll the die twice and keep the higher result. Rolling...
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05/16/20
A ball is thrown from an initial height of 6 feet with an initial upward velocity of 29 ft/s. The balls height h in feet after t seconds is given by the following. h=6+29t-16t^2
Find all values of t for which the balls height is 18 feet.
05/15/20
Consider the function f(x) = x^2 + 3x − 18. Let g be a translation of f so that g has zeros x = −10 and x = −1. Write a rule for g.
Consider the function f(x) = x^2 + 3x − 18. Let g be a translation of f so that g has zeros x = −10 and x = −1. Write a rule for g.
05/12/20
Shortest distance between two lines (Math)
So the question is: In R^3 , consider the lines L1 and L2 defined by L1 = { (s −1,s, 3) : s ∈ R} and L2 = { (2+ t, 0, 2t) : t ∈ R}. What is the shortest distance between these two lines? Between...
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05/12/20
Need help on probability
In a factory, one worker produces an average of 175 units per day with a standard deviation of 20. Another worker produces at an average rate of 165 per day with a standard deviation of 21. What is...
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05/11/20
probability and statistics
Suppose that n people throw their hats in a box and then each picks up one hat atrandom. Let X be a random variable which is defined as the number of people that getback their own hat.a.) Find...
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05/11/20
If A(4, 6) and B(-5, 0), find the point P that is located two-thirds of the way from A to B
05/10/20
Use differentiation and/or integration to express the following function as a power series (centered at x=0).
Use differentiation and/or integration to express the following function as a power series (centered at x=0).f(x)=1/((6+x)^3)∞f(x)=∑ _________ n=0
05/10/20
Statistics Help!!
A manufacturing company uses an acceptance scheme on items from a production line before they are shipped. The plan is a two-stage one. Boxes of 20 items are readied for shipment, and a sample of...
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05/10/20
need help with determining cumulative distribution functions
The problem is:The amount of data, X, arriving at a communication channel, consisting of one main channel and two overload channels, is modelled by a continuous random variable which is uniformly...
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05/10/20
suppose 20 individuals are randomly selected from a large population of voters of which 40% are democrats. what are the probabilities that:
a) exactly 10 of the selected voters are democrats?b) at least 10 are democrats?c) at most 10 are democrats?d) between 8 and 12, inclusive are democrats?e) how many of the voters selected could we...
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05/10/20
Statistics and probability
An archer shoots arrows at a circular target where the central portion of the target inside is called the bull. The archer hits the bull with probability 1/32. Assume that the archer shoots 96...
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05/10/20
Finding variance
A financial analyst has found out that policyholders are four times as likely to file two claims as to file four claims. If the number of claims filed has a Poisson distribution, what is the...
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05/09/20
area between curves question
Find the area that is inside r=3+3sin θ and outside r=2
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