04/25/23

Not sure why this is wrong

Given f"(x)= 1x + 0 , and f'(0) = -5 and f(0) = -4.find f(x) and find f(1) for f(x) I got x^2/-3and for f(1) I got -(53/6)
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04/24/23

continuous exponential growth model
The mass of a substance, which follows a continuous exponential growth model, is being studied in a lab. A sample increases continuously at a relative rate of 4% per day. Find the mass of the... more
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04/24/23

null & alternative hypothesis

A cereal company claims that the mean weight of the cereal in its packets is at least 14 oz. Identify both the null and alternative hypothesis.H0: 𝜇 > 14 and H1: 𝜇 ≤ 14H0: 𝜇 ≥ 14 and... more
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04/24/23

Consider the area between the graphs x+y=25 and x+5=y2 . This area can be computed in two different ways using integrals
Consider the area between the graphs x+y=25 and x+5=y2 . First of all it can be computed as a sum of two integrals ∫baf(x)dx+∫cbg(x)dx where a= , b= , c= and f(x)= g(x)= Alternatively... more
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04/24/23

Suppose an object is dropped from a lunar cliff and its speed in ft/sec. after t seconds is given by v(t)=5.3t
If the object lands after 5 seconds, how high (in ft) is the cliff?
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04/24/23

object is thrown down from a cliff with an initial speed of 4 feet per sec, and its speed in ft/sec after t seconds is given by s(t)=32t+4.
If the object lands after 8 seconds, how high (in ft) is the cliff?
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04/24/23

object is thrown off a cliff initial speed of 4 feet per sec, and its speed in ft/sec after t seconds is given by s(t)=32t+4.
If the object lands after 8 seconds, how high (in ft) is the cliff?
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04/24/23

problem solving
the rectangular garden is 8 feet less then twice the length. Find the dimensions if the perimeter is 20m feet
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04/24/23

Find the test statistic and rejection region
An experimenter has prepared a drug-dose level that he claims will induce sleep for at least 70% of people suffering from insomnia. After examining the dosage we feel that his claims regarding the... more
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04/24/23

and 30 are found to be infested with whitefly

Suppose that 10% of the fields in a given agricultural area are infested with the sweet potato whitefly. One hundred fields in this area are randomly selected, and 30 are found to be infested with... more
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04/24/23

statistics binomial probability
If a seed is planted, it has a 60% chance of growing into a healthy plant.If 7 seeds are planted, what is the probability that exactly 2 don't grow?
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04/24/23

Equation and estimate amount algebra help needed

A radioactive isotope has a half life of 1,920 years let f(t) be the amount of isotope,in milligrams, that is present after t years. If the sample originally contained 21 milligrams, write an... more
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04/24/23

Rabbit population algebra help needed

The rabbit population at the city park increases by 12% per year. If there are intially 183 rabbits in the city park.  -Write a model for the population (y) in terms of years (t). Y=___Find the... more
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04/24/23

predict the population

A small sleepy town in California has been losing population since 1993. In 1993 the population was 10500 but it has been decreasing by about 5.2% per year. Write an exponential formula of the form... more
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04/24/23

Determine how much will remain algebra help needed

The half-life of Polonium-209 is 102 years.If we start with a sample of 108 mg of Polonium-209, determine how much will remain after 153 years.If necessary, round answer to three decimal places.... more
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04/24/23

determine the value of the vehicle

A vehicle is purchased for $32000. If the vehicle depreciates (loses value) at a rate of 17 percent per year, determine the value of the vehicle after 3 years. Round answer to the nearest cent.$____
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04/24/23

exponential formula help needed

Write an exponential formula of the form f(t)=a times b^t to represent the following situation, assume t is in years The beginning population is 79,000 decreasing by 1.99% annually f(t)=
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04/24/23

where does x^2-4x+3 cross the x axis?
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04/24/23

6. Suppose you know that the population standard deviation of a characteristic of interest is….
Suppose you know that the population standard deviation of a characteristic of interest is 13.6. What sample size would be required to estimate the population mean with an error that is less than 5... more
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04/23/23

An airplane flies at an altitude of 5 miles toward a point directly over an observer. The speed of the plane is 314 miles per hour. Find d𝜃 dt (in rad/h) when x = 6 and x = 3.
An airplane flies at an altitude of 5 miles toward a point directly over an observer.theta(x)=cot^-1(x/5) The speed of the plane is 314 miles per hour. Find d𝜃/dt (in rad/h) when x = 6 and x = 3.... more
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04/23/23

Precalculus college

2csc(2pi/4 x+25/4)Find the period and the horizontal shift
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04/23/23

Pre calculus sinusoidal graphs

A ferris wheel is 40 meters in diameter and boarded from a platform that is 4 meters above the ground. The six o'clock position on the ferris wheel is level with the loading platform. The wheel... more
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04/23/23

A skeptical paranormal researcher claims that the proportion of Americans that have seen a UFO, p, is less than 5%. Identify the Type II error in this context.
A) The error of accepting the claim that the true proportion is at least 5% when it really is at least 5%.B) The error of accepting the claim that the true proportion is at least 5% when it is... more
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04/23/23

Find the function value
Find sin θ/2, given that sin θ = 3/5 and θ terminates in quadrant I.
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04/23/23

How to find dy/dx if y = cos^−1(e^4x).
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