William W.

07/23/21

Precalculus Homework Help Please

A population of rabbits oscillates 15 above and below an average of 141 during the year, hitting the lowest value in January (t = 0). Find an equation for the population, P, in terms of the months... more

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Precalculus Homework

07/23/21

Precalculus homework

Outside temperature over a day can be modeled as a sinusoidal function. Suppose you know the high temperature of 86 degrees occurs at 4 PM and the average temperature for the day is 75 degrees.... more

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Trigonometry

07/23/21

Complete the table for the function y=5 sin (3x-180^o) - 2

Amplitude Period Phase shift Equation of the axis Max/Min

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Trigonometry Trigonometric Function

07/23/21

Write an equation for the cosine function as described below

Amplitude 4 Period 180 degrees Reflected in the y-axis phase shift 30 degree to the right

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Trigonometry

07/23/21

What is the equation of the Cosine function that describes the frequency of the siren?

A person who was listening to a siren noticed that the frequency fluctuated with time, measured in seconds. The minimum frequency was 500 Hz and the maximum frequency was 1000 Hz. The maximum... more

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Precalculus Trigonometry Reciprocal Trigonometric Functions

07/22/21

What would be the axis of the curve for f(x)=sinx and f(x)=cosx?

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Algebra 1

07/22/21

State the dimension of the matrix.

State the dimension of the matrix. −3 3 7 0 0 1 14 6 ×

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Calculus

07/21/21

What is the total energy?

The current and voltage across a circuit element are given, respectively, by the equations I (t) = 20e-100t , V (t) = 2-e-100t . Determine the total energy dissipated by the element between t = 0... more

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Math Trigonometry Pre Calculus

07/21/21

An angle 𝛼 in standard position has a terminal side which passes through the point (−5,5). What is sin( 𝛼)

I got to five square root of two but I am not sure how to proceed after that.

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Calculus

07/21/21

What is the angle?

Find the angle θ that maximizes the area of an isosceles triangle with legs of length L=2.

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Calculus Precalculus Pre Calculus

07/20/21

Calculus Question. Please help!

Write the equation of the cosine function that models the values in the following table.x 0 5 10 15 20 25 30--------------------------------------------------------y -5 -8 -11... more

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Science Physics Mechanics

07/20/21

Physics problem find initial velocity

Given the equation of the moving body s=3t2+2t+1 (in SI units), find its initial velocity (at t=0). Correct answer: 2 m/s

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Calculus Precalculus Pre Calculus

07/20/21

Calculus Question. Please Help!

Given the following system of equations,a) build an augmented matrix to represent the system of equations,b) show the elementary row operations that lead to a reduced row form, andc) find the... more

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Algebra 2

07/20/21

How many rowboats did the marina hold?

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Probability

07/20/21

200 people apply for 3 jobs. 60 are women. If 3 persons are selected randomly, what is probability 2 are women

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Algebra 2 Trigonometry Economics

07/20/21

Monthly inflation rate (basic percentage)

The Central Bank's Bulletin, on 07/12/2021, projected inflation for 2021 at 6.11%. If inflation in the months of January to June 2021 were:January: 0.25% February: 0.86% March: 0.93% April: 0.31%... more

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Algebra 1

07/19/21

The sum of two consecutive even integers is −34. Find the two integers

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Precalculus

07/19/21

Find all solutions of the equation sinx−1=0.

Find all solutions of the equation sinx−1=0.Your answer is A+Bkπ, whereA= Corr with 0<A<π,B= π2Incorrect , and k is any integer.A= pi/2what is B equal to? i cannot figure out.

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Integral Calculus Integral

07/19/21

Other Applications of Integration

1. The area bounded by the curve y = e−x, the axes and the line x = 2 is revolved about ox. Find the volume generated. (use circular disk method)2. Find the volume of the torus formed by revolving... more

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Probability

07/19/21

Probability Race Horse

A horse race has 10 entries and one person owns 4 of those horses. Assuming that there are no ties, what is the probability that those four horses finish first, second, third, and fourth?

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