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1,063 Answered Questions for the topic Pre-Calculus

Pre Calculus Precalculus

04/30/21

If a sample of a radioactive isotope decays from 400 grams to 50 grams in 6 days, find the half-life of the isotope. Simplify your answer as much as possible.

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Pre Calculus Calculus

04/27/21

Write equations of cosine functions using properties

Find an equation for a sinusoidal function that has period 2𝜋, amplitude 1, and contains the point (𝜋,4)Cos2pi/2pi=1Cos(x)4 = Cos(pi+C)+D4= Cos (pi+0) +D4= Cos (pi)+D4= (-1) +D My... more

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Pre Calculus

04/26/21

Solve for the equation. (Find all solutions of the equation in the interval [0, 2π). Enter your answers as a comma-separated list.)

4 sin(4x)= -8 sin(2x)x=

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Pre Calculus Trigonometry

04/25/21

This is a circular trig problem that I need help on (pre calculus).

The latitude of London, England is 51.5 N. How far is London from the North Pole if the radius of the earth is approximately 39363 miles?

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Pre Calculus Calculus

04/25/21

A particle is moving with the given data. Find the position of the particle, s(t).

A particle is moving with the given data. Find the position of the particle, s(t).(i) a(t) = 2t + 7 , s(0) = 3 , v(0) = -3 s(t) = ??(ii) t^2 - 5t + 4 , s(0) = 0 , s(1) = 20 s(t) = ??

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Pre Calculus Trigonometry

04/15/21

Graphing cosine functions

How would I add increments of p/4 to an x-axis when phase shifting a cosine graph.Say my x-axis looks like:0 | | p/2 | | p | | 3p/2 | | 2pHow do I... more

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Pre Calculus Calculus Precalculus

04/15/21

Which of the following is the general solution of the differential equation dy dx equals the quotient of 8 times x and y

options - a) y2 = x2 + Cb)x2 - y2 = Cc)y2 = 4x2 + Cd)y2 = 8x2 + CI think its D

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Pre Calculus Math Precalculus Pre Calculus

04/14/21

The problem is: "Use the Law of Sines to solve the triangle. Round your answers to two decimal places. A = 80° 20', C = 53.7°, c = 17.9"I understand the whole Law of Sines thing and how to use... more

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Pre Calculus Trigonometry

04/14/21

Graphing a cosine function

I have been practicing graphing cosine functions on IXL pre-Calculus N.10-4cos (x+pi/3)+1I am able to under the sinusoidal axis being 1, and also to find the amplitude easily as well.My trouble... more

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Pre Calculus Precalculus Pre Calculus

04/12/21

Cartesian to Polar Coordinate 4

Convert the Cartesian coordinate (-5, -6) to polar coordinates, 0≤θ<2π.r = θ =

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Pre Calculus Precalculus Pre Calculus

04/12/21

Cartesian to Polar Coordinates 5

Convert the Cartesian coordinate (5, 1) to polar coordinates, 0≤θ<2πr = θ =

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Pre Calculus Precalculus Pre Calculus

04/12/21

Cartesian to Polar Coordinates

Convert the Cartesian coordinate (3, -2) to polar coordinates, 0≤θ<2π r = θ =

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Pre Calculus Calculus Precalculus Pre Calculus

04/12/21

Polar Equation with Curve

A curve with polar equation r=225sinθ+11cosθ represents a line. This line has a Cartesian equation of the form y=mx+b ,where m and b are constants. Give the formula for y in terms of x. For... more

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Pre Calculus

04/12/21

Write the polynomial given the real zeros as −1 with multiplicity 1, 1 with multiplicity 2 and 2 with multiplicity 1 and the y-intercept (0, 1).

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Pre Calculus

04/09/21

Find the focus of the parabola.

The vertex of a parabola is (10,−9). The directrix is the line y=−10. Find the focus of the parabola.

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Pre Calculus Math Pre Calculus

04/08/21

Pre-calc question

Verify: sin^3 𝑥−cos^3𝑥/sinx-cosx = 1 + sin 𝑥 cos 𝑥what do i do with the third powers?

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Pre Calculus Math Algebra 2 Calculus

04/06/21

Help!!! Just Need the Need Help with Graphing!

A pipe needs to run from a water main, tangent to a circular fish pond. On a coordinate plane, construct the circular fish pond at a given location and specify your center point and radius. Write... more

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Pre Calculus Precalculus Pre Calculus

03/26/21

Trigonometric Identities and Equations

Hello, I've been trying to solve this problem but cannot seem to understand it. The problem is as follows:What are all the values of theta to the nearest degree in the interval 0 degrees is less... more

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