04/19/23

PRECALCULUS HELP
Suppose that sec α= −5/3 and π/2 < α < π.Find the exact values of cos α/2 and tan α/2.  cos α/2 = tan α/2 =
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04/18/23

Lagrange Calculus Problem!
Use Lagrange multipliers to find the maximum and minimum values of f(x,y) = 2x−5y subject to the constraint x^2+2y^2 = 66, if such values exist.maximum = minimum =
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04/18/23

find double integral (x+lny)dydx R= [1,3]x[7,10]
find double integral (x+lny)dydx R= [1,3]x[7,10]I keep getting the answer 6 +20ln(10) + 28ln(7)
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04/18/23

Find the area of the region bounded by the graphs of the equations. (Round your answer to three decimal places.) y = 3 sec ( 𝜋x/ 6) , x = 0, x = 2, y = 0
Find the area of the region bounded by the graphs of the equations. Use a graphing utility to verify your result. (Round your answer to three decimal places.)y = 3 sec(pi x /6), x = 0, x = 2, y = 0
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04/18/23

Partial Derivatives
Find the first partial derivatives of the function.z = (4x + 5y)7z/x=z/y=
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04/18/23

Partial Derivatives
Find the first partial derivatives of the function.g(x, y) = 5 ln(4x + ln y)
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04/18/23

If sin x=1/3, x in quadrant 1, then find (without finding x)
Sin (2x)=?Cos (2x)=?Tan (2x)=?How would I solve this equation? If possible, please explain how you solved it.
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04/17/23

find the sample size
Given a normal distribution with 𝜎 = 1.790. Find the required sample size for a 90% confidence level (estimating the mean) with a 1.02 margin-of-error.
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04/17/23

Trig, triangle find x question
I have a triangle I need to solve for x. The given information is this:One angle is 60 and one angle is 90The angle opposite 60 is xThe hypotenuse is 2sqrt(3)Thank you!
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04/17/23

Equation of a sequence
Can you help me find the equation of these sequences? Please include the general equations for both types, a_n22,42,62,822,8,32,128
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04/17/23

Use the fundamental identities to fully simplify the expression.
cot(x) cos(x) + csc(x) sin2(x)
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04/16/23

Calculus 2 - Improper integrals determining if they converge.

The integral is from 2 to ∞ ∫ x^2/√(x^7)-1
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04/14/23

Test statistic for college student

Testing:H0:p=0.3H1:p<0.3Your sample consists of 131 subjects, with 36 successes. Calculate the test statistic, rounded to 2 decimal places
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04/12/23

A restaurant chain currently has 240 restaurants open nationwide and is opening new restaurants at a constant rate of 15 restaurants per year.
A restaurant chain currently has 240 restaurants open nationwide and is opening new restaurants at a constant rate of 15 restaurants per year. If I construct a function to model the number of... more
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04/12/23

Need help with Quadratic Formula

Using the separated quadratic formula, calculate the right term  for f(x) = x2 + 2x - 3. How do I find out how to do this I'm confused about this and struggling.
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04/12/23

Elements Probability
A simple random sample of 800 elements generates a sample proportion P(line above p)=0.67 .a. Provide the 99% confidence interval for the population proportion (to 4 decimals).   ,  b. Provide... more
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04/12/23

Construct a 98% confidence interval for the true proportion of adults that are worried about being "hired by a robot." (Round your answer to three decimal places.)

Will there be a time when hiring decisions will be done using a computer algorithm, and without any human involvement? A survey found that 60% of the adults surveyed were worried about the... more
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04/12/23

A 90% confidence interval for p, based on a random sample of n = 400 observations from a binomial population with x = 375 successes.
Find the necessary confidence interval for the binomial proportion p. (Round your answers to three decimal places.)
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04/12/23

) Use the derivative of sin (1/x) to show the sequence is decreasing.
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04/12/23

anti-derivatives
Compute the derivative d/dx sin2x. Using this, find (with an explanation) an antiderivative for cos(2x)Compute the derivative d/dx e-x^2 Using this, find (with an explanation) an antiderivative... more
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04/12/23

summation rules

Evaluate the following Sum, using standard summation formulas. (n) E (5i^2+4i)I=1Hint: Your answer should be a function of 𝑛.This list of summation rules may be helpful.
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04/11/23

pre calc homework
f(x)= 2x^2+7x-4/3x^2+4x-15 A y intercept at the point    2) x intercepts at the point(s)    3) Vertical asymptotes at x =    4) Horizontal asymptote at  y = 
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04/11/23

Solve 6 sin (𝝅/2 ×)=3 for the four smallest positive solutions
I've been stuck on this equation for a while. Anyone know how to solve this? If possible, please explain how you solved it.
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04/11/23

statistic college freshman level
A Financial Analyst wishes to estimate the mean expected annual sales (millions of dollars) of anew product. The estimated sales for the new product Xi (millions of dollars) and the probability... more
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04/11/23

How do you find the polynomial given the following information?
x=-3-5i, x=4+√6, and f(1)=246When I tried to solve this problem, I got x^4-2x^3+2x^2-176x+544 but when I checked it, it was incorrect. Thank you for your help in advance!
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