454 Answered Questions for the topic Precalculus Homework

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...
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10/08/18

#### Use substitution and elimination method.

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

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)) :: ________

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)

#### 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...
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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?

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...
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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.

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...
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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...
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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...
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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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