Velocity of a particle
The velocity function (in meters per second) for a particle moving along a line is given by v(t)=t^3−2t^2. Find the displacement and the distance traveled by the particle during the time interval...
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12/10/23
A binomial probability experiment is conducted with the given parameters. Compute the probability of x successes in the n independent trials of the experiment.
n=9, p=0.4, x<_3The probability of x<_3 successes is ?
12/09/23
Business Statistics
A certain disease has an incidence rate of 0.4%. If the false negative rate is 5% and the false positive rate is 2%, compute the probability that a person who tests positive actually has the...
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12/09/23
Convert the polar equation to a rectangular equation. You do not need to solve for y. Make sure to include the = sign.
Convert the polar equation to a rectangular equation. You do not need to solve for . Make sure to include the = sign. Polar equation is Rectangular equation is
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12/09/23
percentages and money
finn wants to buy a new video game with a retail price of 64.95$. if he waits until next week, the video game will be 35% off retail price. if the tax rate is 6%, how much will he save, including...
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12/09/23
Math Expressions
Select all expressions that are equivalent to 8 1/2x + 1/2 + 3 1/2x - 2x.12x -2x10x + 1/212 - 2x9x + 3 1/2 - 2x12x - 2x + 1/2
12/09/23
8 1/2x + 1/2 + 3 1/2x - 2x =
12/09/23
What is the cost of a candy bar?
2 candy bars and 10 drinks sell for $14.0018 candy bars and 20 drinks sell for $38.50
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12/09/23
The doubling period of a bacterial population is 10 minutes.
The doubling period of a bacterial population is 10 minutes. At time t=80 minutes, the bacterial population was 60000. What was the initial population at time? Find the size of the bacterial...
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12/09/23
A bacteria culture initially contains 3000 bacteria and doubles every half hour. Find the size of the baterial population after 80 minutes. Find the size of the baterial population after 9 hours.
A bacteria culture initially contains 3000 bacteria and doubles every half hour.Find the size of the baterial population after 80 minutes. Find the size of the baterial population after 9 hours.
12/09/23
At the beginning of an experiment, a scientist has 200 grams of radioactive goo. After 255 minutes, her sample has decayed to 3.125 grams.
At the beginning of an experiment, a scientist has 200 grams of radioactive goo. After 255 minutes, her sample has decayed to 3.125 grams. What is the half-life of the goo in minutes? Find a...
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12/09/23
The half-life of Radium-226 is 1590 years. If a sample contains 300 mg, how many mg will remain after 2000 years?
The half-life of Radium-226 is 1590 years. If a sample contains 300 mg, how many mg will remain after 2000 years?
12/09/23
The half-life of Palladium-100 is 4 days. After 12 days a sample of Palladium-100 has been reduced to a mass of 7 mg.
The half-life of Palladium-100 is 4 days. After 12 days a sample of Palladium-100 has been reduced to a mass of 7 mg.
12/09/23
Business statistics
A certain disease has an incidence rate of 0.7%. If the false negative rate is 5% and the false positive rate is 2%, compute the probability that a person who tests positive actually has the...
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12/08/23
Find a degree 3 polynomial with real coefficients having zeros 3 and 2-2i and a lead coefficient of 1. Write P in expanded form. Be sure to write the full equation, including P(x)
Find a degree 3 polynomial with real coefficients having zeros 3 and 2-2i and a lead coefficient of 1. Write P in expanded form. Be sure to write the full equation, including P(x)
12/08/23
Algebra word problem
A vertical meter stick casts a shadow 1 7/8 ft. At the same time of day, a light post casts a shadow of 14 2/7 ft. How tall is the light post? Draw an image to represent the situation.
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12/08/23
Tony had 20$ he wants to buy at least 4 snacks. Hot dogs (x) are 3$ each peanuts (y) are 2$ each
So what would be the total price? I have never done this one before.Total snacks: X + Y > (greater than or equal to) 4Total price: 3x + 2y < (less than or equal to) [?]
12/08/23
Find all solutions on the interval [0,2pi). (Answer as a comma-separated list. Round answer to four decimal places)
cos(5x)cos(4x) + sin(5x)sin(4x) =1
12/08/23
Understanding the algebra problem
A ball is thrown upward and outward from a height of 6 feet. The height of the ball, 𝑓(𝑥), in feet, can be modeled by 𝑓(𝑥) = −0.6𝑥^2 + 2.7𝑥 + 6 where 𝑥 is the ball’s horizontal distance, in feet,...
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12/08/23
Understanding the algebra problem
A ball is thrown upward and outward from a height of 6 feet. The height of the ball, 𝑓(𝑥), in feet, can be modeled by 𝑓(𝑥) = −0.6𝑥^2 + 2.7𝑥 + 6 where 𝑥 is the ball’s horizontal distance, in feet,...
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