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452 Answered Questions for the topic Precalculus Homework

Precalculus Homework Precalculus Help!!!!

06/19/19

Exponential and Logarithmic Equations

ex + 45e−x − 14 = 0solve for x, round to four decimal places.
Precalculus Homework Precalculus

06/18/19

Exponential and Logarithmic Functions

The rate at which a battery charges is slower the closer the battery is to its maximum charge C0. The time (in hours) required to charge a fully discharged battery to a charge C is given byt = -k... more
Precalculus Homework Precalculus Algebra

10/28/18

Find a formula for the inverse of the following.

f(x) = ax + b,  a ≠ 0
Precalculus Homework Precalculus Math Help

10/08/18

Use substitution and elimination method.

Substitution: y=x2-6x+9                      y+x=5     Elimination: y=x2-11x-36                   y=-12x+36
Precalculus Homework Math Precalculus

10/03/18

I don't know how to do this pre-calc problem. Please help me.

g(n) = - 7 (9n - 1) (3n + 1)n - intercept : (n, g(n)) :: ________ [smaller n - value]n - intercept : (n, g(n)) :: ________ [larger n - value]y - intercept : (n, g(n)) :: ________
Precalculus Homework Precalculus Polynomial

10/02/18

Use polynomial long division on the following problem.

Use polynomial long division to perform the indicated division. Write the polynomial in the form p(x) = d(x)q(x) + r(x).   (2x4 − 3x3 + 2x2 − 2) ÷ (x2 + 4)
Precalculus Homework Math Algebra 2

10/02/18

Find the cubic polynomial with zeros 3 and 3+4i ( and 3-4i) and having f(1) = 64

Find an nth-degree polynomial function with real coefficients satisfying the given conditions. If you are using a graphing utility, use it to graph the function and verify the real zeros and the... more
Precalculus Homework

10/01/18

The sum of two numbers is 44. Express the product of the​ numbers, P, as a function of one of the​ numbers, x.

The sum of two numbers is 44. Express the product of the numbers, P, as a function of one of the numbers, x.
Precalculus Homework

10/01/18

An elevator at a construction site has a maximum capacity of 2910 pounds. If the elevator operator weighs 190 pounds and each cement bag weighs 85 ​pounds,

how many bags of cement can be safely lifted on the elevator in one trip?
Precalculus Homework

10/01/18

A local bank charges ​$14 per month plus 3cents per check. The credit union charges ​$2 per month plus 6cents per check.

How many checks should be written each month to make the credit union a better deal?
Precalculus Homework

10/01/18

A truck can be rented from Company A for ​$90 a day plus ​$0.30 per mile. Company B charges ​$30 a day plus ​$0.70 per mile to rent the same truck.

How many miles must be driven in a day to make the rental cost for Company A a better deal than Company B's?
Precalculus Homework

09/27/18

A man is walking away from a lamppost with a light source h = 4 m above the ground.

The man is m = 2 m tall. How long is the man's shadow when he is d = 12 m fr
Precalculus Homework

09/27/18

A square plot of land has a building 80 ft long and 20 ft wide at one corner.

 The rest of the land outside the building forms a parking lot. If the parking lot has area 15,300 ft2, what are the dimensions of the entire plot of land?
Precalculus Homework Math Precalculus

09/27/18

Precalc Word Problem Help

College Precalc, just can't figure this out A large square carpet is initially x inches long and x inches wide. Randy decides to trim 4 inches off each edge of the carpet because the edges are... more
Precalculus Homework

09/27/18

If $70000 is invested at 5% compounded quarterly, how long will it take for the investment to triple in value?

need to know how many years it will take to triple in value. 
Precalculus Homework

09/24/18

Determine the quadratic function f whose graph is given. The vertex is (-3,-13) and the y intercept is -4

I do not have a description I’m just stuck and i need help. I really need help like really need help
Precalculus Homework

09/20/18

f(-4)=8 and f(-1)=4 write a linear equation y=f(x)

It has to be written for and equation for a linear function and then I have to graph it to get the all of the answer for the problem correct
Precalculus Homework

09/19/18

Arbitrary point

P(x,y) is an arbitrary point on the circle X2+y2=1. Express the distance d from P to the point A=(3,0) as a function of the x cooridinate of P. state the domain and range of the function. 
Precalculus Homework

09/19/18

A right circular cylinder with height h and base radius r has a total surface area of 80pi square inches. Express the volume of the cylinder as a function of r.

This is one of many questions I can not figure out. 
Precalculus Homework Precalculus Function

09/18/18

What is the height function?

The height s above the ground at time t of a falling object is given by s(t) = −5t2 + v0t + s0 where s is in meters, t is in seconds, v0 is the object's initial velocity in meters per second and s0... more
Precalculus Homework

09/16/18

Find a point on the y-axis that is equidistant from the points (6, −6) and (3, 3).

Find a point on the y-axis that is equidistant from the points (6, −6) and (3, 3).
Precalculus Homework

09/15/18

Rate and interest

Mr. Jackson borrowed money from his bank and on his life insurance to start a business. His interest rate on the bank loan was 10%, and his rate on the insurance loan was 14%. If the total amount... more
Precalculus Homework

09/11/18

Will the rainwater tank fill up?

A huge storm is quickly filling up Manuel’s rainwater collection tank. Manuel wants to know if his 1000 gallon tank will overflow in the next hour, so he uses a rain gauge to determine that rain... more
Precalculus Homework Precalculus System Of Equations

08/29/18

Solve System Of Equations

I have a question on how to simplify this system of equations. If a free variable is needed please use the parameter t.   4x-y+z=6 2y+6z=36 x+z=6   Thank you!
Precalculus Homework

08/28/18

How far did Mark row if the entire trip took 4 hours?

Mark can row upstream at 5mph and downstream at 11mph. If Mark starts rowing upstream until he gets tired and then rows downstream to his starting point. 
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