2,195 Answered Questions for the topic Pre Calculus

Pre Calculus Precalculus

04/14/20

Verify the given identity: (sinθ+cosθ)^2+(sinθ-cosθ)^2=2.
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Pre Calculus Precalculus

04/14/20

Find the exact value of sec8pi/3 without using a calculator. Draw the angle and give the reference angle used to solve the problem. Show all steps and use the reciprocal definition of secant.

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Pre Calculus Precalculus

04/14/20

Use a sum or difference formula to find the exact value of cos5pi/12.
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Pre Calculus Precalculus

04/14/20

What is the equation of the function which is used as a guideline when sketching this graph when y=3csc1/2x
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Pre Calculus

04/09/20

A 6000​-seat theater has tickets for sale at ​$27 and ​$40. How many tickets should be sold at each price for a sellout performance to generate a total revenue of ​$182,800​?
A 6000​-seat theater has tickets for sale at $27 and ​$40. How many tickets should be sold at each price for a sellout performance to generate a total revenue of ​$182,800​?
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Pre Calculus

04/09/20

World prob (pre calc)
The height of a stone catapulted into the air is given by h(x)=−1400x2+4x+2, where x is the horizontal distance from the point at which the stone is launched. Both the height and horizontal... more
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Pre Calculus Math Calculus

04/09/20

CALCULUS Find the Rate of Change
Find the rate of change of total​ revenue, cost, and profit with respect to time. Assume that​ R(x) and​ C(x) are in dollars.R(x)=3x, C(x)=0.001x^2+0.5x+10, when x=25 and dx/dt = 8 units per... more
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Pre Calculus

04/07/20

find an equation of a rational function f that satisfies the given conditions vertical asymptotes: x= -6, x=2. horizontal asymptotes: y=0. x-intercept: -1; f(0)= -2. hole at x=4
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Pre Calculus

04/04/20

pre calc word problem

a circle C has center at the origin and radius 7, another circle K has a diameter with one end at the origin and the other end at the point (0,17) the circles C and K intersect in two points. let P... more
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04/03/20

How do I convert this parametric equation to its rectangular equation? X=4sin3t Y=cos3t
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Pre Calculus

04/03/20

Find all roots and write the linear factorization
f(x)=2x4-9x3+10x2+x-2
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04/03/20

(a)No one interferes with the ball. How long does it take the ball to hit the ground? (b)How far did the ball travel horizontally?

Aurora hit a baseball with an initial velocity of 70 feet per second at an angle of 30° with the horizontal. The ball hit her bat when the ball was 3 feet above the ground. Use answer from part a... more
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Pre Calculus

04/02/20

a man pushes a lawnmower with a force of 35 pounds exerted at an angle of 43 degrees to the ground. Find the horizontal and vertical components of the force.
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Pre Calculus

04/02/20

Can this be done algebraically?
A cashier has 20 coins consisting of nickels, dimes, and quarters with a value of $2.65. If the number of dimes is three less than the number of nickels, how many of each type of coin does she have? more
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Pre Calculus Precalculus

04/02/20

If there are 1,000 bugs at the start of an experiment and 1800 after 1 day, how long until there are 10,000?

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Pre Calculus Precalculus

03/31/20

Find the derivative help please!
The position of an object at time t is given by s(t) = -8 - 9t. Find the instantaneous velocity at t = 1 by finding the derivative.
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Pre Calculus Precalculus Pre Calculus

03/31/20

Law of cosines precalc
Given the triangle below, find the measure of angle A. Picture is not drawn to scaleif side a =20 and the other 2 sides are 16 and 21. keep in mind that angle b and c are opposite of their sides.
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Pre Calculus Trigonometry

03/31/20

Please Help! Pre-Calculus and Trigonometry.

cos a = - 12/13, quadrant II, sin B = 1/2, quadrant II. Find cos (a-B).
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Pre Calculus Precalculus Pre Calculus

03/31/20

Half angle identities

If sin(x)=5/9, and x is in quadrant I, determine the exact value of each of the following. tan(x/2)=?I got sin(x/2)= sqrt((9-sqrt(56))/18) and cos(x/2)= sqrt((9+sqrt(56))/18) but I can't figure out... more
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Pre Calculus

03/30/20

How much should be invested at 5% compounded quarterly so that 9 years later the investment will be worth $5000?

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Pre Calculus

03/29/20

What is the full equation including P(x)=?
Given P(x)=3x5−x4+56x3−40x2−475x−375, and that 5i is a zero, write P in factored form (as a product of linear factors). Be sure to write the full equation, including P(x)=.
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Pre Calculus Precalculus

03/25/20

Find a polynomial function f(x) of degree 2 with real coefficients that has 5-i as one of its zeros.

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Pre Calculus Precalculus

03/25/20

Use long divisions to show that x^2+16 is a factor of f(x)=3x^3-2x^2+48x-32. Then find all zeros of f(x).
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Pre Calculus Precalculus

03/25/20

Use the Intermediate Value Theorem to show that f(x)=x^4+10x^3-3x^2-5x+4 has a zero in the interval [-1,0]. Explain your reasoning.

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Pre Calculus Precalculus

03/25/20

Find the complete linear factorization of f(x) and list all real zeros.

Let f(x)=3x^3-2x^2-7x-2.
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