# Precalculus Math Homework Help

### Al P.

Plymouth, NH

PLEASE HELP!!! question: Two positive numbers have the property that one more than the first number plus four less than three times the second, totals to 100.

(i) If we call the first number x, and the second z, write an equation that relates these numbers. (ii) Use (i) to write an equation that gives the second in terms of the first. (iii)...

Mar 4 | Jeanette from Hyde Park, MA | 1 Answer | 0 Votes

Pre-CalculusCalculusMathPrecalculus HomeworkMath Help### Arthur D.

Saugus, MA

what csc if cot is 1

Find csc θ if cot θ is 1 Basic Trig Quiz Precal / Geometry Homework 12th Grade Math/ College Math

Mar 8 | Sierra from Grand Prairie, TX | 2 Answers | -1 Votes

Precalculus Homework### Mark M.

Carson, CA

Find the magnitude and bearing (in degrees, 0 ∘ ≤ θ ≤ 90 ∘ ) of the vector < 3 , 4 > .

Find the magnitude and bearing (in degrees, 0 ∘ ≤ θ ≤ 90 ∘ ) of the vector < 3, 4 >. Give your answers to the nearest hundredth. Magnitude ____ Bearing ____(write N, S, E or...

Feb 27 | Sofiya from Seattle, WA | 1 Answer | 0 Votes

Precalculus HomeworkMath**No answers ... yet!**

Given ∣→D∣=20 and the bearing of the vector is N43°W

Given ∣→D∣=20 and the bearing of the vector is N43°W, find the components of the vector →D. Round your answers to the nearest hundredth. →D≈ < , >

Feb 27 | Sofiya from Seattle, WA | 0 Answers | 0 Votes

Precalculus Homework### Mark M.

Carson, CA

if cos(x)= sqrt(2)/2 then what is x on the interval [0, 2pi)

if cos(x)= sqrt(2)/2 then what is x on the interval [0, 2pi)

Feb 20 | Bobby from Tampa, FL | 1 Answer | 0 Votes

Precalculus Homework### David C.

Denham Springs, LA

Find the average rate of change of the function on the interval specified for real number h. j(x) = 2x3 on [1, 1 + h]

Any help would be greatly appreciated.

Feb 7 | Devyn from Holly Springs, NC | 1 Answer | 0 Votes

Av Rate/Change & Diff Quot. Of FunctionDetermine The Difference QuotientPrecalculusPrecalculus HomeworkHelp Asap Please**No answers ... yet!**

Given f(x) = x2 + 3x + 9, find the following. a. f(0) (b). f(1) (c). f(−1) (d). f(−3) (e) .f(a) (f).f(x + h)

Given f(x) = x2 + 3x + 9, find the following. (a) f(0) (b) f(1) (c) f(−1) (d) f(−3) (e) f(a) (f)...

Feb 11 | Dana from El Paso, TX | 0 Answers | 0 Votes

Precalculus Homework### David W.

Lorton, VA

A trapezoid has an area of 35 square centimeters. Assuming that one base is 9 centimeters and the other base is 11 centimeters, find the height of the trapezoid

Applying the Concepts

May 21 | Gabrielle from Mount Laurel, NJ | 1 Answer | 0 Votes

Precalculus HomeworkGeometry### Arthur D.

Saugus, MA

Among all rectangles that have a perimeter of 76 76 , find the dimensions of the one whose area is largest

Among all rectangles that have a perimeter of 76, find the dimensions of the one whose area is largest. Write your answers as fractions reduced to lowest terms.

Jan 22 | Hannah from Tiffin, OH | 2 Answers | 0 Votes

Precalculus Homework### Mark M.

Carson, CA

Find all of the real and imaginary zeros for the polynomial function. N(t)=4t^3−10t^2+4t+5

Find all of the real and imaginary zeros for the polynomial function.

Jan 28 | Sarah from Waipahu, HI | 1 Answer | 0 Votes

Precalculus Homework### Bobosharif S.

Fort Myers, FL

Determine if the equation in 2 variables has y-axis symmetry or origin symmetry. Justify.

Y=x4-3x2+1

Jan 25 | Kayla from Stony Point, NY | 1 Answer | 0 Votes

Precalculus Homework### Andrew M.

Palm Bay, FL

Aaron runs at a constant speed of 10 feet per second. If Aaron is 48 feet from his front door when he starts running down a straight road toward school, how far

Aaron runs at a constant speed of 10 feet per second. If Aaron is 48 feet from his front door when he starts running down a straight road toward school, how far is Aaron from his front door when he...

Jan 24 | Bronson from Rancho Cucamonga, CA | 1 Answer | 0 Votes

Pre CalculusPrecalculusPrecalculus Homework### Andy C.

Orlando, FL

Can you help me with my Precalculus?

the question I’m stuck on is “ solve 2/-6x - 3x/x-4 is greater than or equal to 0” sorry I had to write it out different, there aren’t many options lol. If you can help me out, that would be great...

Nov 20 | John from Pardeeville, WI | 1 Answer | -1 Votes

PrecalculusPrecalculus Homework**No answers ... yet!**

Assume wheels are radius 15 inches and video is recorded at 20 fps

Assume wheels are radius 15 inches and video is recorded at 20 fps Q: How would your eyes interpret video of a wheel rotating at 1200 rpms? How fast is this?

Jan 11 | Susan from Colonia, NJ | 0 Answers | 0 Votes

Precalculus Homework### Ryan K.

Lithia, FL

Find the values that x2-y2 can take.

-3<x≤4 -4<y<-1 Find the values that x2-y2 can take.

Dec 23 | Vangioni from Tomahawk, WI | 1 Answer | 0 Votes

Precalculus Homework### Lori C.

Pyatt, AR

Find the vertex, x and y-intercepts, and sketch a graph

𝑓𝑥 =−2𝑥^2−8𝑥+1

Nov 29 | Bee from Colorado Springs, CO | 1 Answer | 1 Vote

Precalculus Homework### Arturo O.

Melbourne, FL

How can I figure this problem out?

So my problem on my precalculus homework is “Rodney shoots a basket at 6.5ft above the ground. It’s initial velocity is 25 feet per second. How many seconds after shooting does the ball go through...

Nov 5 | David from Merrimac, WI | 1 Answer | 0 Votes

Precalculus Homework**No answers ... yet!**

The point P(x,y) lies on the graph of f. Show that PQ=√(x-1)^2+(3/x-1)

A word problem I have on a long question worksheet for IB Math SL that I cannot figure out.

Dec 10 | Claire from Covina, CA | 0 Answers | -1 Votes

Precalculus Homework### Mark M.

Carson, CA

How do I solve this problem?

i have a problem on my precalculus homework. I’m having a rough time. It says “Find the power function that represents the points (5, 2), (7, 5) And (10, 9)” please help me. I’m having a lot of...

Nov 6 | Seth D from Los Angeles, CA | 1 Answer | 1 Vote

PrecalculusPrecalculus Homework**No answers ... yet!**

how does topograph help to establish terrestrial biomes?

i will talk about my future and what should i do

Dec 18 | Isabel from Ellenwood, GA | 0 Answers | 0 Votes

BiomesPrecalculus HomeworkPre-calculus is an interesting area of math for students because of its multi-purpose nature. It reviews previously learned topics like trigonometry, introduces new topics like matrices and determinants, and prepares students for a formal course in calculus for the following year. Pre-calculus is sometimes referred to as algebra 3 because it builds upon basic algebraic concepts that were learned in high school. In some educational institutions, pre-calculus is divided into separate algebra and trigonometry courses to provide a solid foundation for a calculus course.

### Effective and Convenient Pre-Calculus Help Is Available Online

Many students struggle with pre-calculus and need additional assistance. Reliable online help for homework assignments is available here at 24HourAnswers.com. Our online help for homework comes in two forms: you can submit your materials to our pre-calculus tutors who will offer guidance and advice to help you arrive at the appropriate solutions, or you can sign up for a live online tutoring session with a knowledgeable pre-calculus tutor who will provide one-one-one instruction to help you increase your level of understanding.

### We Can Help You Master the Typical Content Found in Most Pre-Calculus Courses

Typical content for a regular pre-calculus course includes:

- Functions and their graphs
- Polynomial and rational functions
- Exponential and logarithmic functions
- Trigonometry
- Systems of equations and inequalities
- matrices and determinantsM
- Sequences, series, and probablility

While all these topics are important, it is fair to say that the topic of exponential and logarithmic functions is the most widespread in various fields of study, from business math to theoretical physics. As an interesting example, consider the following equation where we would like to solve for x:

A quick review of three basic logarithm rules:

## product rule: ln (ab) = ln a + ln b

## quotient rule: ln (a/b) = ln a - ln b

## power rule: ln a^{n} = n ln a

shows that none will be helpful here. One technique for solving this equation is to multiply both sides by e^{x}. The result is:

After subtracting 3e^{x} from both sides, we have:

After careful consideration of this equation, you may recognize it as a quadratic, with e^{x} taking the place of x. We can therefore factor this just as we would any quadratic equation:

Setting each factor equal to zero, we have:

Adding 2 and adding 1 to the left and right equations, respectively gives:

Now, finally, in each case we can take the natural log of both sides:

## ln e^{x} = ln 2 and ln e^{x} = ln 1

Remembering that ln e^{x} = x, we have our two solutions:

This example has served to review some of the basic properties of logarithms and to illustrate an early creative twist that was necessary for solving the given equation.

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