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Precalculus

05/13/24

Lighthouse B is 9 miles west of lighthouse A. A boat leaves A and sails 4 miles. At this time, it is sighted from B. If the bearing of the boat from B is N64degreesE, how far from B is the boat?

The boat is either 8.7 miles or ___ miles from lighthouse B, to the nearest tenth of a mile. I don't understand how to get the second value

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Precalculus Math

05/12/24

sketch the curve given by each pair of parametric equations over the given interval

https://ibb.co/zh5fLw6photo of problem ^

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Precalculus

05/08/24

Rewrite sin (x - 4π/3) in terms of sin (x) and cos (x).

This is for my pre calculus class.

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Answers •1

Precalculus Calculus

05/07/24

What is the set of removable discontinuities of the function?

What is the set of removable discontinuities of the function j(θ) = (cos2(θ)·sin2(θ))/cot2(θ)?

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Precalculus Calculus

05/07/24

What is the set of removable discontinuities of the function?

What is the set of removable discontinuities of the function j(θ) = (cos2(θ)·sin2(θ))/cot2(θ)?

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Answers •1

Precalculus Math Algebra 1

05/06/24

Use this model to find the percent of prescriptions filled with generic drugs in each year from 2008 through 2014.

The percent p of prescriptions filled with generic drugs at a large pharmacy chain from 2008 through 2014 p(t)... more

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Precalculus

05/04/24

why is my answer wrong?

A ferris wheel is 20 meters in diameter and boarded from a platform that is 1 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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Answers •3

Precalculus

05/02/24

Find the value of k such that the vectors u and v are orthogonal.

𝘂 = −2k𝗶 + 3𝗷𝘃 = 5𝗶 − 4𝗷

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Answers •1

Precalculus

05/01/24

Given vectors u =⟨5,−3⟩ and v = ⟨-1,9⟩, find u - v and write the result in component form.

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Answers •1

Precalculus

05/01/24

Given vectors u = ⟨3,−2⟩ and v = ⟨1,7⟩, find the sum u + v and write the result in component form.

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Answers •2

Precalculus

05/01/24

The half-life of carbon-14 is 5600 years. If a piece of charcoal made from the wood of a tree shows only 68% of the carbon-14 expected in living matter, when did the tree die?

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Answers •2

Precalculus

04/30/24

pre calc how do I find the equation

Outside temperature over a day can be modeled as a sinusoidal function. Suppose you know the temperature is 70 degrees at midnight and the high and low temperature during the day are 85 and 55... more

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Precalculus

04/26/24

Simplify sin (pie - t) to a single trig function using a sum or difference of angle identity

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Precalculus

04/26/24

how do you To find the remainder when p(x) = -7x^2 + 2x + 40 is divided by D(x) = x - 5, and how do you solve to give a complete fractorization P(x) over the real numbers.

I've been trying to figure it out and somewhat stuck on it.

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Precalculus

04/24/24

At the beginning of an experiment, a scientist has 260 grams of radioactive goo. After 240 minutes, her sample has decayed to 4.0625 grams. What is the half-life of the goo in minutes?

I got t=44.1837 however I plug into equation and its wrong?What am I doing wrong?

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Answers •2

Precalculus

04/24/24

pre calc why is my answer wrong?

Ramogi has a sprinkler that has several varieties of coverage. The 42 degree sprinkler head sprays water a distance of up to 15.6 feet from the head. What area will be covered by the spray of the... more

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Answers •1

Precalculus

04/24/24

pre calc what formula would I use?

This is the first year Valerie is playing softball and she has been practicing her batting. On her last swing the bat made an arc with a radius of 37.8 inches and swept through 214 degrees of... more

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Precalculus

04/21/24

PRE-CALCULUS Transmission rates

4.)Explore the consequences of different transmission rates. Start with 10 people initially infected, and compare a 1%, 2.5%, and 5% transmission rate (you may wish to use Desmos or a similar... more

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Precalculus

04/21/24

- PRE - CALCULUS

Consider how a rumor might spread among a population. Suppose on Day 1 a single person tells someone else a rumor, and suppose that on every subsequent day, each person who knows the rumor tells... more

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Precalculus Math

04/20/24

A regular octagon is inscribed in a circle with a radius of 12 inches. Find the perimeter of the octagon. Round to the nearest tenth.

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Answers •1

Precalculus

04/19/24

Find the exact solutions in the interval 0 ≤ 𝑥 < 2𝜋 . cos^2𝑥 + 4 = 2 sin 𝑥 − 3

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Answers •2

Precalculus

04/19/24

A chess tournament has 12 participants. How many games must be scheduled if every player must play every other player exactly once?

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Answers •2

Precalculus

04/19/24

A car with 16-inch-radius wheels is moving with a speed of 50 mph. Find the angular speed of the wheels in radians per second.

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Answers •1

Precalculus

04/19/24

Suppose that the half-life of Plutonium is 24000 years.

Suppose that the half-life of Plutonium is 24000 years. a) Find a function 𝑃(𝑡) that models the amount of Plutonium after t years, if the initial amount is 10 grams. b) Find the time (in years)... more

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Precalculus

04/18/24

Find the center and the radius of the circle: 𝑥^2 + 𝑦^2 − 4𝑥 + 5𝑦 = −1

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Lighthouse B is 9 miles west of lighthouse A. A boat leaves A and sails 4 miles. At this​ time, it is sighted from B. If the bearing of the boat from B is N64degrees​E, how far from B is the​ boat?

sketch the curve given by each pair of parametric equations over the given interval

Rewrite sin (x - 4π/3) in terms of sin (x) and cos (x).

What is the set of removable discontinuities of the function?

What is the set of removable discontinuities of the function?

Use this model to find the percent of prescriptions filled with generic drugs in each year from 2008 through 2014.

why is my answer wrong?

Find the value of k such that the vectors u and v are orthogonal.

Given vectors u =⟨5,−3⟩ and v = ⟨-1,9⟩, find u - v and write the result in component form.

Given vectors u = ⟨3,−2⟩ and v = ⟨1,7⟩, find the sum u + v and write the result in component form.

The​ half-life of​ carbon-14 is 5600 years. If a piece of charcoal made from the wood of a tree shows only 68​% of the​ carbon-14 expected in living​ matter, when did the tree​ die?

pre calc how do I find the equation

Simplify sin (pie - t) to a single trig function using a sum or difference of angle identity

how do you To find the remainder when p(x) = -7x^2 + 2x + 40 is divided by D(x) = x - 5, and how do you solve to give a complete fractorization P(x) over the real numbers.

At the beginning of an experiment, a scientist has 260 grams of radioactive goo. After 240 minutes, her sample has decayed to 4.0625 grams. What is the half-life of the goo in minutes?

pre calc why is my answer wrong?

pre calc what formula would I use?

PRE-CALCULUS Transmission rates

- PRE - CALCULUS

A regular octagon is inscribed in a circle with a radius of 12 inches. Find the perimeter of the octagon. Round to the nearest tenth.

Find the exact solutions in the interval 0 ≤ 𝑥 < 2𝜋 . cos^2𝑥 + 4 = 2 sin 𝑥 − 3

A chess tournament has 12 participants. How many games must be scheduled if every player must play every other player exactly once?

A car with 16-inch-radius wheels is moving with a speed of 50 mph. Find the angular speed of the wheels in radians per second.

Suppose that the half-life of Plutonium is 24000 years.

Find the center and the radius of the circle: 𝑥^2 + 𝑦^2 − 4𝑥 + 5𝑦 = −1

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Lighthouse B is 9 miles west of lighthouse A. A boat leaves A and sails 4 miles. At this time, it is sighted from B. If the bearing of the boat from B is N64degreesE, how far from B is the boat?

The half-life of carbon-14 is 5600 years. If a piece of charcoal made from the wood of a tree shows only 68% of the carbon-14 expected in living matter, when did the tree die?