454 Answered Questions for the topic Precalculus Homework

Precalculus Homework Precalculus Algebra

09/24/17

Find the Domain for each function

a) g(x)= x/(x^2-1)   b) h(x)= (3x-12)^1/2
Precalculus Homework Precalculus Algebra

09/24/17

For the function f(x)= (x+2)/(x-6)

a) Is the point (3,14) on the graph?   b) If x=4, what is f(x)?
Precalculus Homework

09/24/17

Find the equation of a line perpendicular to the line 2x+y-2=0 and passing thru the point (-3,0) USE the slope intercept form of the equation (y=mx+b)

Find the equation of a line perpendicular to the line 2x+y-2=0 and passing thru the point (-3,0) USE the slope intercept form of the equation (y=mx+b)
Precalculus Homework Precalculus Pre Calculus

09/24/17

find the roots of the polynomial equation 5x^2-6x+9=0, and cube roots of 5x^3-6x+9=0

I tried solving this using quadratic equation but I am unsure if I am following the right path. Thank you 

Find f ◦ g ◦ h when:

f(x) = 1/x   g(x) = x2     h(x) = x3 + 2
Precalculus Homework Precalculus

09/22/17

The function f(x)=2x+2 is one-to-one. Find an equation for f^-1(x), the inverse function

Type an expression for the inverse. Use integers or fractions for any numbers in the expression 
Precalculus Homework

09/18/17

What is the radius of the inner rim of the wheel?

The inner of the cart wheel has a circumference of 1.7 meters. I need to know the radius. 
Precalculus Homework

09/18/17

each spoke of a wheel is 1 meter long what is the diameter of the centre circular hub?

I need to know the diameter of the center circular hub of the wheel. And each of the spokes that goes form the hub to the inner rim of the wheel is one meter long. 

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

n = 3   -4 and 5 + 5i are zeros   f(-1) = 183   Answer  f(x) = (answer goes here) (Type an expression using x as the variable. Simplify your answer.)
Precalculus Homework

09/15/17

A merchant has 5 pounds of mixed nuts that costs $30 he wants to add peanuts that cost $1.50 per pound and cashews that cost 4.50 per pound to obtain 50 pounds

of a mixture that costs 2.90 per pound. How many pounds peanuts are needed?
Precalculus Homework Math Rational Expressions

09/05/17

Could you ever factor this or is this the final answer? Rational expressions.

I got to the final answer of... -48x^4 - 42x^3 - 15x^2 -5x / (8x+7)(3x+1)
Precalculus Homework Precalculus Precalc

07/29/17

find the sum 8+6+4+(8/3)+...

Is this even possible? I cannot find a correlation from a1 to a2 to a3.... so on. It's not Arithmetic or Geometric  
Precalculus Homework Precalculus Pre Calculus

07/19/17

Find just one zero

f(x)=x3-10x2+8x+3    Find just one of the zeros of F    Where does f have a relative maximum    what is the relative maximum value 
Precalculus Homework Precalculus Pre Calculus Pre Calculus

07/19/17

Given the polynomial p(x) = 2x^4+x^3+10x^2-31x-18

Given the polynomial p   p(x)= 2x4 + x3 + 10x2 - 31x -18    a. using the rational root theorem list all possible rational roots of P. b. completely factor the polynomial over the set of... more
Precalculus Homework Algebra 2 Precalculus Math Help

07/19/17

Math help please answer and thank you with explanation

Roger has the graph of F(x) = −4x 2 but needs to sketch the graph of G(x) =(x+3)^2+2/3 Describe how Roger can use the graph of F(x) to sketch the graph of G(x)
Precalculus Homework Precalculus Pre Calculus Pre Calculus

07/18/17

A function f with real coefficients has the following characteristics

A function f with real coefficients has the following characteristics   degree f= 4 f has a y-intercept of 52  x-2 is a factor of f -4/3 and 2-3i are both zeros of f    Find f(x) and write... more
Precalculus Homework Precalculus Probability

07/10/17

We are having a pumpkin carving contest and we are going to give 1st, 2nd, 3rd and 4th place prizes.

We are having a pumpkin carving contest and we are going to give 1st, 2nd, 3rd and 4th place prizes. There are 9 contestants, in how many ways can the prizes be awarded?

06/24/17

Algebra II HW Questions (Please show step by step and explain)

4. Graph the area bounded by  y< 1/2x+6, X+3y>=12,  X>=0 and x<=12   part i. graph the bounded by X>=0 and x<=12. shade the region that satisfies both inequalites    part ii.... more
Precalculus Homework Trigonometry

06/21/17

To the nearest foot, the lampost is how many feet tall?

the light from a lamp casts a shadow of a man standing 10 feet away from the lampost. The shadow is 5 feet long. The angle of elevation from the tip of the shadow to the lamp is 50 degrees.
Precalculus Homework

06/16/17

Find exact solutions

find exact solutions on the interval 0≤θ≥2Π. 4cos2θ + 4cosθ - 3 =0
Precalculus Homework

05/31/17

A small swimming pool can be filled by two hoses together in 1 hr and 12 mins. The larger hose alone fills the pool in 1 hr less than the smaller hose.

How long does it take the smaller hose to fill the pool?
Precalculus Homework

05/28/17

Solve equation by using an appropriate substitution. Check your answers. x^4-7x^2+12=0

Basic concepts and skills
Precalculus Homework

05/28/17

Solve equation and check answer: r+11=6 square root r+3

Basic Concepts and skills
Precalculus Homework

05/28/17

solve equation by multiplying both sides by the LCD. 1/x +2/x+1 +3/x+2=0

Basic concepts and skills
Precalculus Homework

05/28/17

Find the real solutions of the equation by factoring: x^3-36x=16(x-6)

Basic Concepts and skills

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