477 Answered Questions for the topic Precalculus Homework

Precalculus Homework Precalculus Honors

11/21/14

Determine constant k, so x-4 is a factor of polynomial
Polynomial: 2x^4-7x^3+kx-10
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Precalculus Homework Precalculus Honors

11/20/14

(2Z+6)^2=-16
We have to solve it over the complex field and have it in a+bi form
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Precalculus Homework

11/20/14

The logistic growth function P(t)= 160/ 1 + 9e^-0.165t describes the population of the endangered species of elk "t" years after
a. How many elk were initially introduced into the habitat? b. How many elk are expected after 6 years? What is the limited size of elk population sustained by the habitat?
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Precalculus Homework Precalculus Honors

11/20/14

solve and put back in a+bi form, i^7^777
This is dealing with complex numbers and conjugates.  I'm not sure where to start or how I would out it back in a+bi form.  The question is about i^7^777
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Precalculus Homework Precalculus Pre Calculus

11/20/14

Precalc help
Find identified term of the geometric sequence. 7th term: 8/5, -16/25, 32/125,-64/625,....
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Precalculus Homework

11/20/14

A little confused for this problem, Could use some help
write the first 5 terms of the geometric sequence. Determine common ratio and write the nth term of the sequence as a function n. a1=80, ak+1=-1/2ak         Note: (k+1) and (k) are bases
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Precalculus Homework

11/20/14

Need some help please
Write the first five terms of the geometric sequence.a1=4, r=-1/square root of 2
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Precalculus Homework

11/15/14

Nancy wants to invest $3000 in saving certificates that bear an interest rate of 9.75% per year
Nancy wants to invest $3000 in saving certificates that bear an interest rate of 9.75% per year, compounded semiannually. How long a time period should she choose to save an amount of $4000?
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Precalculus Homework

11/12/14

Solve for the height
A flag pole is situated on top of a building. The angle of elevation from a point on level ground 330 feet from the building to the top of the flag pole is 63". The angle of elevation from the same... more
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Precalculus Homework

10/29/14

8) for the function: f(x) = (x-1)^2 (x-3) (x+1)
Expended version: x^4 - 4x^3 + 2x^2 + 4x - 3   A) use the leading coefficient test to determine the end behaviors.   Degree:  Leading Coefficient:                                             ... more
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Precalculus Homework

10/29/14

7) what is the equation of the function whose vertex is (1,1) and goes through the point (0,3)
(hint: plug constants into vertex form: f(x) =a(x-h)^2 + k)
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Precalculus Homework

10/29/14

for the function in standard form: f(x)= x^2-2x+1
a) what are the coordinates of the vertex of the parabola?  (hint: x= -b / 2a)            B) is the vertex a minimum of a maximun? explain
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Precalculus Homework

10/29/14

Solve each equation by using the quadratic formula
2x^2+11x-51=0
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Precalculus Homework

10/29/14

Solve each equation by factoring
1) (2b-3) (b+2)=0   2) r^2+2r-48=0   3) x^2+7x=8   4) 8a^2 - 24a=0    
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Precalculus Homework Continuous Compounding

10/28/14

A repitred couple has $500,000 in an account that earns 6.8% interest compounded continually.
They withdraw 5% of the amount in the account each year starting next year. a) Write a formula for the amount of money in the account for t years from now b) Write a formula for the amount of... more
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Precalculus Homework

10/28/14

Suppose $3000 is invested at a rate of 7% per year compounded monthly. (Round your answers to the nearest cent.)
Suppose $3000 is invested at a rate of 7% per year compounded monthly. (Round your answers to the nearest cent.)     a.) Find the principal after 6 months.   b.)  Find the principal after 1... more
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Precalculus Homework Functions Interval

10/18/14

For the function, find the intervals where the function is increasing, decreasing, or constant.
The function is: R(x)= (x+2)2 if x<-1 -x if x≥-1 Thanks in advanced.
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Precalculus Homework Precalculus Word Problem Distance

10/18/14

Determine the approximate distance...
Determine the approximate distance between the Earth, with a mass of approximately 6.0x10^24 kg, and an object which has a mass of 6.42x10^22 kg if the gravitational force equals approximately... more
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Precalculus Homework Word Problem Direct Variation

10/18/14

How far did it travel in the first 2 seconds?
The distance that an object falls from rest, when air is negligible, varies directly as the square of the time. A stone dropped from rest travels 400 feet in the first 5 seconds. Thanks in advanced.
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Precalculus Homework Functions

10/18/14

For the function below, determine a. f(x-1) b. f(x+a)-f(x) and c. f(x^2)
The function is 3√x +6(x=4) Thanks in advanced.
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Precalculus Homework Domain And Range

10/18/14

For each relation below, describe the domain and range and determine whether or not the relation is a function.3x-4y=17and x=vy-4
Thanks in advanved :) The second equation is x=√y-4
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Precalculus Homework

09/27/14

Evaluate the radical expression and express the result in the form a + bi.
√-5√-45
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Precalculus Homework Precalculus

09/24/14

Help with solving this equation. Please help!
f(x) = 8^(x+1) Find f(1/3)   Thank you in advance
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Precalculus Homework

09/23/14

if f(x) = 3x^3 + x-3 and g(x)= -3+4x+5x^2. Find a and b
a)     (f+g)(x)  b)      (f-g)(x)
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Precalculus Homework

09/23/14

Evaluate the piece wise function for the given values .
f(x)={¦(4x=1 if x>1@|x| if x≤1)¦     a) f(2)  b) f(-3)
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