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Precalculus

3d

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

This is for my pre calculus class.

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Precalculus Calculus

3d

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

3d

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 Math Algebra 1

4d

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

6d

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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Precalculus

8d

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

𝘂 = −2k𝗶 + 3𝗷𝘃 = 5𝗶 − 4𝗷

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Precalculus

9d

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

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Precalculus

9d

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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Precalculus

10d

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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Precalculus

10d

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

14d

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

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Precalculus

14d

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

16d

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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Precalculus

16d

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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Precalculus

16d

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

19d

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

19d

- 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

20d

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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Precalculus

21d

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

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Precalculus

21d

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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Precalculus

21d

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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Precalculus

21d

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

22d

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

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Precalculus

22d

Paula is 6 feet tall and walking away from a lamppost that is 20 feet tall. What is the length of her shadow when she is 10 feet from the lamppost? Round your answer to the nearest tenth of a foot.

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Precalculus Trigonometry

23d

The rectangular coordinates of a point are given. Find the polar coordinates of each point in (r,theta) form.

The rectangular coordinates of a point are given. Find the polar coordinates of each point in form.A. Use the appropriate conversion rules to write the coordinates of this point in polar form. B.... more

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Answers •2

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

Paula is 6 feet tall and walking away from a lamppost that is 20 feet tall. What is the length of her shadow when she is 10 feet from the lamppost? Round your answer to the nearest tenth of a foot.

The rectangular coordinates of a point are given. Find the polar coordinates of each point in (r,theta) form.

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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?