495 Answered Questions for the topic Precalculus Homework

Precalculus Homework

01/06/16

Angular and Linear velocity?
A wheel spins through 31 revolutions per minute. Find the angular velocity and the linear velocity if the radius of the wheel is 1.7 feet.
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Precalculus Homework

01/06/16

Pre Cal Question
evaluate in Degrees:   1. sin^-1(-square root 3 / 2)   2. arctan(square root 3)    3. arcsin (0)   4. sin(cos ^-1 (-squareroot 3 / 2))
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Precalculus Homework Precalculus

01/06/16

A truck with 18-in.-diameter wheels is traveling at 55 mi/h.
Find the angular speed of the wheels in rad/min, *hint convert miles to inches & hours to minutes   How many revolutions per minute do the wheels make?   Please show work.
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Precalculus Homework

12/17/15

Find the approximate solution to the equation by graphing an appropriate function on a graphing calculator. x² = 1.9^x. Therefore x˜__
(Round to three decimal places as needed. Use a comma to separate answers as needed)
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Precalculus Homework

12/17/15

How long does it take for a deposit of $500 to double at 7% compounded continuously?
How many years does it take to double? ______years________days
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Precalculus Homework

12/17/15

Find all real numbers in the interval [0, 2p) that satisfy the equation. Use radian measure 11 sin ² x – sin x = cos ² x
The solution set is {-- --}. (Round to the nearest tenth as needed. Use a comma to separate answers as needed)
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Precalculus Homework

12/15/15

Find the product of -4-3i and its conjugate. The answer is a+bi where
the real number a equals the real number b equals  
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Precalculus Homework

12/06/15

pre calculus
A suspension bridge has two main towers of equal height.  A visitor on a tour ship approaching the bridge estimates that the angle of elevation to one of the towers is 19 degrees.  After sailing... more
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Precalculus Homework

12/03/15

how do you solve 3/x+x/10=11/2x
it is not addition but multiplyign a common factor from the numerator. the answer is 10x
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Precalculus Homework

12/01/15

trig functions
Use a sum or difference formula to determine the value of the trigonometric function.cos(9 pi/4+ 5 pi/6
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Precalculus Homework

11/19/15

A rectangle is inscribed in the ellipse 10x^2+15y^2=150. write the area of the rectangle as a function of one variable (x).
I know the answer is A(x)=4x square root 150-10x^2/15, but I have no clue how to do the problem!
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Precalculus Homework

11/16/15

f(x)= (1/2)^x graph transition
For the function f(x)= (1/2)^x Write an equation of the function when it is shifted one unit right and two units down. Write two points, the asymptote, intercepts, domain, and range
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Precalculus Homework

11/16/15

I need to find the domain and range of for f(y) = 2/(c^2 + 3c)
I need to find the domain and range of for f(y) = 2/(c^2 + 3c)I need to find the domain and range of for f(y) = 2/(c^2 + 3c) I know how to find the domain its where c^2 + 3c would = 0 so it's not... more
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Precalculus Homework Precalculus Honors

11/10/15

A coin is tossed, and a card is pulled from a standard deck. Find the probability of the following. a tail on the coin or a heart
This question is a probability question, that does not include the simple 1/2 + 13/52. I already tried that and got it wrong. It seems that there is more to the question and I honestly do not get it.
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Precalculus Homework Functions

11/09/15

Find the time it hits the ground and the time it reaches its highest point.
A pomegranate is thrown from ground level straight up into the air at time t=0  with velocity 96 feet per second. Its height in feet at t  seconds is f(t)=−16t^2 +96t  . Find the time it hits the... more
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Precalculus Homework Functions

11/09/15

h(t)=-4.9t^2 + 100t+206
NASA launches a rocket at t=0  seconds. Its height, in meters above sea-level, as a function of time is given by h(t)=−4.9t^2 +100t+206  . A) Assuming that the rocket will splash down into the... more
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Precalculus Homework Calculus

11/02/15

Calculus question
Suppose that f : [0, 1] −→ [0, 1] is a continuous function. Prove that f has a fixed point in [0, 1], i.e., there is at least one real number x ∈ [0, 1] such that f(x) = x
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Precalculus Homework Precalculus Pre Calculus Math Help

10/27/15

find a polynomial P(x) with real coefficients having a degree 4, leading coefficient 3, and zeros 4-i and 4i
Find a polynomial P(x) with real coefficients having a degree 4, leading coefficient 3, and zeros 4-i and 4i
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Precalculus Homework

10/24/15

y=Asin(k+c)+h
Graph sine and cosine
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Precalculus Homework

10/13/15

Write the equation of the quadratic function given the following
1. Vertex (2,5) Point: (-1,3) 2. Vertex (2,-3) Point (4,1)  
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Precalculus Homework

10/09/15

What is the optimal profit?
National Business Machines manufactures x model A portable printers and y model B portable printers. Each model A costs $100 to make, and each model B costs $150. The profits are $45 for each model... more
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Precalculus Homework Precalculus Functions Math Help

10/08/15

Difference Quotient problem with understanding completely: f(x)=1/x^2
f(x)=1/x^2 In utilizing the difference quotient to solve this problem, how would I solve it? Please list in steps as well.  Thank you in advance.
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Precalculus Homework

10/06/15

prove the formula for the inverse of a 2x2 matrix
Prove that the matrix [a b] 1 0]   is equal to [1 0](d/ad-bc) (-b/ad-bc)]                                 [c d] 0 1]                   [0 1](-c/ad-bc) (a/ad-bc)]
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Precalculus Homework Math Math Help Algebra 2 Help

10/05/15

-1/2(x-2)^4/3=1-3^2
How would I go about this question in solving for x? Also, what kind of problem would this be considered to practice other similar problems?   -1/2(x-2)^4/3=1-3^2
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Precalculus Homework Precalculus Word Problem College

10/05/15

Word problem about driving for 55mi/h to anther city, staying for 25hrs, and driving 45mi/h back. She is back 49 hours after leaving.
Wilma drove at an average speed of 55 mi/h from her home in City A to visit her sister in City B. She stayed in City B 25 hours, and on the trip back averaged 45 mi/h. She returned home 49 hours... more
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