10/19/22

prob and statistics
n=12 p=0.75 x=10 p(10)=
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10/18/22

Rate of Change In Cost
Suppose that for a company manufacturing calculators, the cost, and revenue equations are given byC=80000+40x, R=200−x/240,where the production output in one week is x calculators. If the... more
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10/18/22

What is the dollars per month after finding the rate?
A company selling widgets has found that the number of items sold x depends upon the price pp at which they're sold, according the equation x=70000/√3p+1 (3p+1 is all cube rooted)Due to inflation... more
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10/18/22

I am not getting the correct answer when i square

You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe the population standard deviation is approximately σ=28.3σ=28.3. You would like to be 95%... more
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10/17/22

Probability Stats
A jury has 12 jurors. A vote of at least 10 of 12 for "guilty" is necessary for a defendant to be convicted of a crime. Assume that each juror acts independently of the others and that the... more
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10/17/22

The distance is increasing at ?
A plane flying with a constant speed of 24 km/min passes over a ground radar station at an altitude of 5 km and climbs at an angle of 50 degrees. At what rate is the distance from the plane to the... more
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10/17/22

Chemistry problem

For a particular isomer of C8H18, the combustion reaction produces 5093.7 kJ of heat per mole of C8H18(g) consumed, under... more
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10/17/22

Chemistry Problem
Calculate the maximum number of Calories (kilocalories) in a 2000‑ and a 2500‑Cal diet that should be obtained from fat. The daily values (DV) for fat and carbohydrates and the reference daily... more
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10/16/22

Determine the pressure of CO2 gas in the pressurized Falcon tube
Determine the pressure of CO2 gas in the pressurized Falcon tube (assume the vented tube has a pressure of 1 atm, and that V and n remain constant). You will need the mass of an evacuated Falcon... more
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10/16/22

Please help with finding magnetic field between Currents.
Ther‎e are tw‎o lo‎ng, str‎aight, hori‎zontal wir‎es that are p‎arallel and at a di‎stance of 2a ap‎art. If bo‎th wir‎es ca‎rry a cu‎rrent I in the sam‎e directio‎n, (a) what is the m‎agnetic... more
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10/16/22

Use Newton's method with the specified initial approximation x1 to find x3, the third approximation to the root of the given equation. (Round your answer to four decimal places.)
x5 − x − 7 = 0,    x1 = 1
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10/15/22

An empty storage tank has a volume of 1,530 ft3. What is the buoyant force exerted on it by the air? (Assume the air is at 0°C and 1 atm.)
i couldnt solve the answer. i tried to follow the other answer's solving but it didnt come out can you give me the full answer?
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10/14/22

Help me asap plz
A motorcyclist initially traveling east at 15 meters per second, accelerates uniformly at a rate of 3 meters per second squared east to a velocity of 21 meters per second east. How far did the... more
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10/14/22

Calculate the rate at which the distance between the vehicles is changing at t=5 minutes.
A police car traveling south toward Sioux Falls, Iowa, at 160km/h pursues a truck traveling east away from Sioux Falls at 140km/h.At time 𝑡=0, the police car is 40km north and the truck... more
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10/13/22

Person A is at the top of a cliff. Person B is at the bottom of the cliff. Person B throws a ball straight up toward Person A. How much speed does it have when it gets to Person B? (more info below)
Person A is at the top of a cliff. Person B is at the bottom of the cliff. Person B throws a ball straight up toward Person A. It leaves her hand with speed = v, and 3.0 seconds later, the ball... more
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10/13/22

We want to find how much charge is on the electrons in a nickel coin. Follow this method. A nickel coin has a mass of about 4 g. Each mole (6.02 × 1023 atoms) has a mass of about 58 g
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10/12/22

What is Kb of this base?
An unknown weak base with a concentration of 0.170 M has a pH of 9.56. What is the Kb of this base?
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10/12/22

Question dealing with gravimetric analysis lab.
Approximately how many mL of 5% BaCl22H2O solution would be required to precipitate all the sulfate if we assume that your samples are pure sodium sulfate? Assume that the density of the barium... more
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10/12/22

If p(e)= 0.55, p(e or f) =0.85 and p(e and f) =0.05 find p(f)
Statistics
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10/12/22

A rectangle is inscribed with its base on the x-axis and its upper corners on the parabola y = 3 − x 2 . What are the dimensions of such a rectangle with the greatest possible area?
Width =   Height = 
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10/12/22

I need help. This uses derivative of Exponents
Consider the function f(x)=e^5xg(x) , where g(0)=1 and g′(0)=−3.Find f′(0): 
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10/12/22

Which one has the greatest average speed during an entire game: a baseball, football, or soccer ball? Why?

I said a baseball because it travels faster than the other balls. Is this correct.
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10/12/22

Write a net ionic equation for the reaction that occurs when excess hydrobromic acid (aq) and sodium sulfide are combined.
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10/12/22

Find the equation x2 + y2 + Dx + Ey + F = 0
Find the equation x2 + y2 + Dx + Ey + F = 0 of the circle that passes through the points. To verify your result, use a graphing utility to plot the points and graph the circle.(0, 0), (0, −4), (5, 0) more
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10/12/22

Blocks A and B are connected by a string that passes over a frictionless pulley. Mass of block A is 10kg, the mass of block B is 25kg. Coefficient of fiction between block A and incline surface is.08
a) Write down the Newton's component equations for A and B.b) Find the acceleration of block A and the tension force of the string
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