04/20/23

Law of Cosines Trigonometry

A pilot flies in a straight path for 1 h 30 min. She then makes a course correction, heading 10 degrees to the right of her original course, and flies 2 h in the new direction. If she maintains a... more
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04/18/23

normal distribution

Assume that x has a normal distribution. Find P(3 ≤ x ≤ 6) given that 𝜇 = 4.7 and 𝜎 = 1.6. (Use 4 decimal places.)
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04/18/23

A ladder which is 20 m long makes an angle of θ with respect to the ground. If the tip of the ladder is falling at a rate of 0.4 m/min , find dθ /dt in rads/ min when θ is π /6 rads

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04/18/23

Which of the following is not an effect of adding a constant, b, to each value in a data set?
Which of the following is not an effect of adding a constant, b, to each value in a data set? Select an answer that best applies and why. A. It is added to measures of center and location B. It... more
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04/17/23

Partial derivatives
Find the first partial derivatives of the function.g(x, y) = 5 ln(4x + ln y) gx(x, y) =  gy(x, y) =  
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04/17/23

Partial derivatives
If f(x, y) = 16 − 4x2 − y2find fx(8, 6) and fy(8, 6) and interpret these numbers as slopes. 
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04/17/23

Partial derivatives
Consider the following.f(x, y) = x2y − 3xy2(b) Find f(3, y) and use it to calculate fy(3, y).
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04/16/23

Statistics help

the average income of a certain town is $30,000 with a standard deviation of $4000. What is the probability a sample size of 16 has a sample mean between $28,000 and $32,000?
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04/13/23

Plz help me with this questions
How to use logarithmic differentiation to determine y′ if cos x = e^y.
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04/10/23

Probability Question
1 in every 6 seeds will sprout. Simulate by using a number cube and estimate the probability that none of a row of 10 seeds will sprout.
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04/10/23

Evaluate lg 25 + lg 2 × lg 50 + (lg 2)^2 without using a calculator
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04/08/23

Suppose there's a company that's making ID badges for its employees
Suppose there's a company that's making ID badges for its employees. IDs are made up of one vowel (A, E, I, O, U) and three numbers (0,1,2,3,4,5,6,7,8,9)  what's the total number of badges that can... more
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04/05/23

Statistics word problem

The ages of a group of 123 randomly selected adult females have a standard deviation of 17.1 years. Assume that the ages of female statistics students have less variation than ages of females in... more
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04/01/23

How do I solve the question below?
Assume that the readings at freezing on a batch of thermometers are normally distributed with a mean of 0°C and a standard deviation of 1.00°C. A single thermometer is randomly selected and tested.... more
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03/28/23

The question is in the description. It is a statistics question that involves normal distribution
You are given the following random sample from a population that you believe to be approximately normally distributed. 8.60 8.70 9.00 8.97 8.72 8.74 8.96 8.78 a. What is a 95% confidence interval... more
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03/26/23

I need help on making a simple 2 sample word problems of derivative of trigonometric function with solutions
a sample word problem with solution involving derivative of trigonometric function, just can't think a perfect real life situation, i need an opinion from someone. thank you..
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03/07/23

What is the name of an electronic equipment for generating the required voltage for testing the device when their own power supply are worn
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09/09/18

Identify the type of quadric surface defined by the equation and find all x, y, and z intercepts of the resulting graph.
16y2-25x2+z2=1 is the equation.   It wants: The quadratic surface is an _____ with x-intercept when x = _______, y-intercept when y = _______, z-intercept when z = ______.   I had plugged in... more
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