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Precalculus Math

11/05/23

At the beginning of an experiment, a scientist has 224 grams of radioactive goo.

At the beginning of an experiment, a scientist has 224 grams of radioactive goo. After 105 minutes, her sample has decayed to 7 grams.What is the half-life of the goo in minutes?Find a formula... more

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Precalculus Math

11/05/23

The apparent magnitude (how bright an object appears to the observer) is given by

The apparent magnitude (how bright an object appears to the observer) is given by M=(5/2)log(b0/b) where b is the brightness of the object and b0 is a positive constant. A particular telescope is... more

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Precalculus Math

11/04/23

According to the Jukes-Cantor model, given a proportion p of sites with different nucleotide sequences, the expected number of evolutionary changes between the two sequences is

According to the Jukes-Cantor model, given a proportion p of sites with different nucleotide sequences, the expected number of evolutionary changes between the two sequences is ... more

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Precalculus Math Trigonometry

11/04/23

Find the solutions of the equation in the interval [−2𝜋, 2𝜋]. Use a graphing utility to verify your results. (Enter your answers as a comma-separated list.) tan(x) = −1

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Precalculus Math Trigonometry

11/04/23

A sine curve with a period of 8𝜋, an amplitude of 5, a left phase shift of 𝜋/4, and a vertical translation down 4 units.

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Precalculus Math

11/03/23

Parametric Equations: Maximum

Find the time it takes for a ball following the path of the parametric equations, x = 4t - 8 and y = -t^2 + 18t, to reach a maximum

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Precalculus Math

11/03/23

Parametric Equations: Time Pt. 1

Find the time it takes for a rocket following the path of the parametric equations, x = 4t - 8 and y = -2t^2 + 18, to hit the ground

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Precalculus Math Algebra 1 Algebra 2

11/03/23

A bicycle with 24-inch diameter wheels is traveling at 20 mi/h. Find the angular speed of the wheels in radians per minute.

A bicycle with 24-inch diameter wheels is traveling at 20 mi/h. Find the angular speed of the wheels in radians per minute. How many revolutions per minute do the wheels make?

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Precalculus Math Algebra 1 Algebra 2

11/03/23

Explain the differences between linear speed and angular speed when describing motion along a circular path. (Select all that apply.)

Linear speed is the distance traveled over time. Linear speed is always greater than angular speed. Linear speed can be measured in miles per hour. Linear speed can be measured in degrees. Angular... more

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Precalculus Math Algebra 1 Algebra 2

11/03/23

There is lightning rod on the top of a building. From a location 650 feet from the base of the building, the angle of elevation to the top of the building is measured to be 40°.

There is lightning rod on the top of a building. From a location 650 feet from the base of the building, the angle of elevation to the top of the building is measured to be 40°. From the same... more

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Precalculus Math

11/03/23

Find all real solutions.

Find all real solutions to the equation log4(3x^2) - log4(4x+8) = -1Be sure to check any potential solutions in the original equation.

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Precalculus Math

11/03/23

Half-life of approx. 3.45 years.

Show that a radioactive substance which exponentially decays to 20% of its initial value after 8 years has a half-life of approximately 3.45 years. Recall that the half-life is the length in time... more

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Precalculus

11/02/23

Precalculus 12 grade

y=2^x-5-9Five points with coordinate whole numbers . Ex x=5, y=-8

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Precalculus

11/02/23

How do I go about solving for the exact value of this experssion

sec(sin^-1 12/13)I assume I solve for the arcsin for 12/13 first and the find the secant of what I got, but that doesn't sound right.

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Precalculus

11/01/23

how can i find the zeros

Factor the polynomial and use the factored form to find the zeros. (Enter your answers as a comma-separated list. Enter all answers using the appropriate multiplicities.)P(x) = x4 − 5x3 + 4x2

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Precalculus

11/01/23

how can i find the zeros

Factor the polynomial and use the factored form to find the zeros. (Enter your answers as a comma-separated list. Enter all answers using the appropriate multiplicities.)P(x) = x3 − x2 − 12x

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Precalculus

11/01/23

have problem solving this

A manufacturer finds that the revenue generated by selling x units of a certain commodity is given by the function R(x) = 60x − 0.2x2, where the revenue R(x) is measured in dollars. What is the... more

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Precalculus

11/01/23

need help solving this

A quadratic function f is given.f(x) = −3x2 + 6x − 1(a)Express f in vertex form.

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Precalculus

11/01/23

If $2000 is invested at 7.5% annual interest compounded quarterly, how many years will it take for the investment to triple to $6000?

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Precalculus

11/01/23

Pls help, sorry for the trouble

Link to image of problem ignore the writingThank you!

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Precalculus

11/01/23

Pls help, sorry for the trouble

Link to image of the problem a) write a positive cosine equation that corresponds to the word problem b) how high was your right foot when you first started? thank you!

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Precalculus

11/01/23

Law of Cosines (Three islands)

The diagram shows three islands in a bay. You rent a boat and plan to visit each of these remote islands. If you are on island A, on what bearing should you navigate to go to island C? (The shape... more

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Precalculus

11/01/23

Law of Cosines (Two ships)

Two ships leave a harbor at the same time. One ship travels on a bearing S10°W at 13 miles per hour. The other ship travels on a bearing N75°E at 11 miles per hour. How far will the ships be after... more

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Precalculus

11/01/23

what is the increasing interval of the function f(x)= x^4-2x^3-5x^2+5x-4

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Precalculus

10/31/23

how can i find the local minimum

P(x) = −x2 + 2x find the local minimum (x,y)

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At the beginning of an experiment, a scientist has 224 grams of radioactive goo.

The apparent magnitude (how bright an object appears to the observer) is given by

According to the Jukes-Cantor model, given a proportion p of sites with different nucleotide sequences, the expected number of evolutionary changes between the two sequences is

Find the solutions of the equation in the interval [−2𝜋, 2𝜋]. Use a graphing utility to verify your results. (Enter your answers as a comma-separated list.) tan(x) = −1

A sine curve with a period of 8𝜋, an amplitude of 5, a left phase shift of 𝜋/4, and a vertical translation down 4 units.

Parametric Equations: Maximum

Parametric Equations: Time Pt. 1

A bicycle with 24-inch diameter wheels is traveling at 20 mi/h. Find the angular speed of the wheels in radians per minute.

Explain the differences between linear speed and angular speed when describing motion along a circular path. (Select all that apply.)

There is lightning rod on the top of a building. From a location 650 feet from the base of the building, the angle of elevation to the top of the building is measured to be 40°.

Find all real solutions.

Half-life of approx. 3.45 years.

Precalculus 12 grade

How do I go about solving for the exact value of this experssion

how can i find the zeros

how can i find the zeros

have problem solving this

need help solving this

If $2000 is invested at 7.5% annual interest compounded quarterly, how many years will it take for the investment to triple to $6000?

Pls help, sorry for the trouble

Pls help, sorry for the trouble

Law of Cosines (Three islands)

Law of Cosines (Two ships)

what is the increasing interval of the function f(x)= x^4-2x^3-5x^2+5x-4

how can i find the local minimum

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