3,315 Answered Questions for the topic College Algebra

College Algebra

11/13/14

#### give the center and radius of the circle

give the center and radius of the circle 4x^2+4y^2+4x-4y-3=0

College Algebra

11/13/14

#### give the focus

give the focus, directrix and axis of the parabloa: 32y^2=-x

College Algebra Algebra 2

11/13/14

#### prove the parablola

prove the parablola with foucus (c,0) and directricx x =-c has equation y^2 = 4cx

College Algebra

11/12/14

#### solve equation analyticaly

wat it the domain and range of the flwwing equation In(5+x)-In(3+x)-In3=0. solve the eqution analyticaly

College Algebra

11/12/14

#### defined function

A. consider the function defined by f(x)=2^x-1+8. find the invrse of f
b.Solve for A=pe^nq for n

College Algebra

11/12/14

#### word problem

radium 226 has a half life about 1600 years. An intial simple wights 2 grms.A. find a formula for the dacy functionB. Find the amount left after 9600 years.c. Find the time for the intial amount to...
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11/11/14

#### Give a counterexample to the claim log (s/t) = log s/ log t

Give a counterexample to the claim log (s/t) = log s/ log t

College Algebra Conic Sections

11/10/14

#### Determine an equation for the parabola with focus (3,1) and directrix x=9

determine an equation for the parabola with focus (3,1) and directrix x=9

College Algebra Circus Tickets

11/09/14

#### What is the price of a child's ticket and a senior citizen ticket?

The circus is coming to town. Sue is selling tickets. The first day she sold 4 senior citizen tickets and 2 children's tickets for a total of $80. The second day she received $145 for 5 senior...
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College Algebra

11/08/14

#### among all rectangles that have a perimeter of 192, find the dimensions of the one whose area largest. write your answers as fractions reduced to lowest terms

i dont understand how to do this problem

10/30/14

#### A local lumberyard takes in $24,000 in a 12 hour period. Write a direct variation equation between the income and the number of hours.

Variation word problem for my class.

10/29/14

#### How much interest is earned in 10 years invested on $5,000 invested at an interest rate of 7% per year?

Another problem that I am having difficulty solving.

10/29/14

#### Kira owes the bank some money at 6% per year. After one year, she paid $80 in interest. How much money does she still owe to the bank?

Just a math problem that I have been stuck on for a while.

College Algebra

10/29/14

#### Graph the rational function

Graph the rational function by hand f(x)=x^3+2x^2-13x-10

College Algebra

10/29/14

#### 2 drains drain a pool in 8 hours. One is 1.5 times faster. How long will it take for the faster one to drain the pool itself?

i have no clue how to set up this problem in order to solve it need help

College Algebra

10/29/14

#### world problem

A rectangular piece of cardboard measuring 12 in by 18 in is to be made into a box with an open top by cutting equal sized squares from each corner and folding up the sides.A.give the restriction...
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College Algebra

10/28/14

#### Find all the zeros of the function

Find all the zeros of the function P(x)=x^3+2x^2-13x-10

College Algebra

10/24/14

#### The floor of a one-story building is 14 feet longer than it is wide (see figure). The building has 1395 square feet of floor space.

(a) Write a quadratic equation for the area of the floor in terms of w.
(b) Find the length l and width w of the floor.
w = ftl = Incorrect: Your answer is incorrect. ft

College Algebra

10/23/14

#### I need help solving this problem

The time it takes a pendulum to complete one period (one swing over and back)vaires directly with the square root of its length. If a pendulum is 20 feet long and has aperiod of 5 sec, find the...
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College Algebra

10/23/14

#### I nedd to find the variation of the equation and solve it

The winds in southern California contain wind generators whose power production varies directly with the cube of the winds speed. if one such generator produces 1000W of power in a 25mph wind, find...
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College Algebra

10/21/14

#### Let f(x)=-3+5. Find f sub -1 (x)

How do you find find:
f(x)=-3x+5. Find f sub -1(x)

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