454 Answered Questions for the topic Precalculus Homework

Precalculus Homework Math Precalculus Math Help

10/30/17

Find an nth degree polynomial function with real coefficients satisfying the given conditions

n=3     -2, and -2+3i are zeros   leading coefficient is 1
Precalculus Homework Math Precalculus

10/30/17

A certain culture initially has 25 bacteria and is observed to double every 5 hours

a) Find an exponential model n(t) = n02t/a for the number of bacteria in the culture after t hours. b) Estimate the number of bacteria after 18 hours. c) After how many hours will the bacteria... more
Precalculus Homework Math Calculus Precalculus

10/30/17

Solve the equation

e2x − 3ex + 2 = 0
Precalculus Homework Math Precalculus Math Help

10/30/17

After how many days are there only 5 g remaining?

A 15 g sample of radioactive iodine decays in such a way that the mass remaining after t days is given bym(t) = 15e−0.087t, where m(t) is measured in grams.
Precalculus Homework Precalculus Logarithms

10/25/17

Use the Laws of Logarithms to expand the expression (a and b), or combine the expression (c and d)

a) log (a2 / b4 √c)   b) ln (√x2 +4 / (x2 + 1)(x3 - 7)2)c) 4 ln x −1/3 ln(x2 + 1) + 2 ln(x − 1) d) log 5 + 2 log x + 3 log(x2 + 5)
Precalculus Homework Precalculus Mass Mass Number

10/24/17

Doctors use radioactive iodine as a tracer in diagnosing certain thyroid gland disorders. This type of iodine decays in such a way that the mass remaining after

m(t) = 6e−0.087t where m(t) is measured in grams.   a) Find the initial mass (mass at time t = 0).   b) How much of the mass remains after 20 days?  
Precalculus Homework College Algebra Math Help Asymptotes

10/18/17

Find the intercepts and asymptotes

a) r(x) = x − 2 / x2 − 4x     b) s(x) = x2 − 2x + 1 / x3 − 3x2
Precalculus Homework Precalculus Pre Calculus

10/15/17

Word Problem

Beth has 230ft of fencing available to make a rectangle enclosed in an open field. The enclosure needs to have an area of 3000ft^2. If she has to use all 230ft of fencing, what dimensions should... more
Precalculus Homework Precalculus Precalc

10/14/17

Can someone explain and help me solve this?

2x^(1/2)-9x^(1/4)+4
Precalculus Homework Precalculus Pre Calc

10/14/17

Word Problem Help!

A fourth-grade class decides to enclose a rectangular garden, using the side of the school as one side of the rectangle. What is the max area that the class can enclose using 32 ft of fence? What... more
Precalculus Homework Precalculus Pre Calculus Pre Calculus

10/14/17

Pre-Calc Help!

The spreag from of oil leaking from a tanker is in the shape of a circle. If the radius r (in feet) of the spread after t hours is r(t) = 200sqt(t), find the area A of the oil slick as a function... more
Precalculus Homework

10/11/17

Find a function that models the length L of her shadow in terms of her distance d from the base of the lamp.

A woman 5 ft tall is standing near a street lamp that is 14 ft tall
Precalculus Homework Math Polynomial Polynomials

10/05/17

Two polynomials P and D are given.

Use either synthetic or long division to divide P(x) by  D(x), and express the quotient  P(x)/D(x) in the form P(x)D(x)= Q(x) + R(x)/D(x).   P(x) = 2x3 + 4x2 − 2x − 1, D(x) = x + 3   P(x)/D(x)=
Precalculus Homework Precalculus

10/02/17

simplify 2√3(2*²√2)

2√3(2*²√2)
Precalculus Homework Precalculus

10/02/17

simplify ((2x^-2)/(5y^3))^-1

simplify ((2x-2)/(5y3))-1
Precalculus Homework Precalculus Algebra Question

10/02/17

Simplify (-3x^2*y^3)*(4*x*y^2)

Simplify (-3x^2*y^3)*(4*x*y^2)
Precalculus Homework Precalculus College Algebra

10/02/17

For the quadratic f(x) = 1 − 6x − x^2

(a) Express f(x) in standard form   (c)find its maximum or minimum value.
Precalculus Homework Precalculus College Algebra

10/02/17

Find the values of the trigonometric functions of t when csc t = 3 and the terminal point of t is in Quadrant II.

I incorrectly solved it the first try.
Precalculus Homework College Algebra

09/26/17

Use the Inverse Function Theorem to show that f and g are inverses of each other

f(x) = x3 + 1     g(x) = ^3√x − 1
Precalculus Homework Precalculus College Algebra

09/26/17

Find the inverse function

                    3x    f(x)=     ______                                     x-2
Precalculus Homework Precalculus Algebra

09/24/17

Show each step needed to transform y=(x^2-4) to y=-x^2 and label each step with the equation.

Show each step needed to transform y=(x^2-4) to y=-x^2 and label each step with the equation.
Precalculus Homework Precalculus Algebra Question Alegbra

09/24/17

Supposed that f(x)= x^2+2x-8

a) What are the coordinates of the vertex?   b) Find the x-intercepts using algebra.  
Precalculus Homework Precalculus Precalculus Honors

09/24/17

For the following function....

f(x)= -x+1    if -1<= (read this as less than or equal to) x<1   f(x)= 2         if x=1   f(x)= x^2.    if x>1     a) find f(0)   b) find f(1)   c) find f(2)   d) determine... more
Precalculus Homework Precalculus Alegbra

09/24/17

FOR f(x)=2x+1 AND g(x)=3x-2 FIND:

a) (f+g)(3)     b) (f/g)(x)

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