Precalculus Mathematics Homework Help Forum

Free pre-calculus mathematics homework help from qualified mentors. Math courses prior to calculus homework. Please use the template when requesting help and show your work.

Threads

How do you evaluate this log equation?

  • haengbon
  • · Replies 4 ·
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4

How can x=2y and 5x<y+7 both be true?

  • Mindscrape
  • · Replies 4 ·
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4

Equation for the tangent of a circle

  • snshusat161
  • · Replies 6 ·
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6

Prove square root of 3 is irrational

  • kolley
  • · Replies 9 ·
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9

Determine the probability that a random variable

  • Sirsh
  • · Replies 2 ·
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2

Constructing two parallel planes in R3

  • mnm831
  • · Replies 2 ·
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2

Finding probability of drug use given positive test result in NETICA

  • susan_poland
  • · Replies 3 ·
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3

Is cos(x - (pi/2)) equal to cos(x)tan(x)?

  • silversorrow
  • · Replies 1 ·
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1

What Is the Minor Value of n in the Newton Binomial Problem?

  • Taturana
  • · Replies 6 ·
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6

Where Did I Go Wrong with the Cosine Formula?

  • Gringo123
  • · Replies 2 ·
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2

Can Complex Function q(z) Be a Contraction Mapping?

  • complexnumber
  • · Replies 1 ·
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1

What Is the Probability of Exactly Two Matching Cards in Envelopes?

  • PhysViti
  • · Replies 1 ·
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1

Angle of Vectors a and b with Orthogonal Unit p and q

  • lorik
  • · Replies 8 ·
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8

Standard deviation of the sample mean from an infinite population

  • Amy-Lee
  • · Replies 1 ·
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1

Probability of Producing High-Priced Miniature Mules from Breeding Stock

  • mossfan563
  • · Replies 1 ·
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1

Finding the Point of Intersection: A Simpler Approach

  • .hacker//Kazu
  • · Replies 5 ·
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5

Solve cos2xsinx=1: Simplifying and Finding X

  • CutiePieYum
  • · Replies 4 ·
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4

How do I find the area of the blue section in this trig circle problem?

  • onandon
  • · Replies 2 ·
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2

Mean Score of Female Students in Class of 30: 78

  • coreyB
  • · Replies 3 ·
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3

Solving C: Recursive Rule for Sequence 2, 6, 8, 14, 22, 36

  • recoil33
  • · Replies 2 ·
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2

Trig Problem - Way Overthinking This

  • apt403
  • · Replies 12 ·
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12

How do I convert 0.8660 to square root 3/2?

  • lorik
  • · Replies 7 ·
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7

Factoring large numbers to find roots

  • Poker-face
  • · Replies 6 ·
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6

Find explicit function or functions corresponding from implicit

  • MrNeWBiE
  • · Replies 8 ·
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8

Infinite limit as X tends to infinity

  • IdanH14
  • · Replies 5 ·
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5

Find the compositions of these functions?

  • thereddevils
  • · Replies 7 ·
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7

How do i read a frequency graph?

  • Sirsh
  • · Replies 4 ·
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4

How do I prove these permutation identities with P(n,r)?

  • LampMan
  • · Replies 3 ·
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3
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1

Solving a polynomial with complex properties

  • moocav
  • · Replies 4 ·
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4

Proof or counterexaample of Floor 7 Ceiling

  • nastygoalie89
  • · Replies 2 ·
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2

Intermediate Algebra Factoring

  • Poker-face
  • · Replies 9 ·
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9
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1

Probability more than 25 of 30 students pass a quiz

  • hpt001
  • · Replies 2 ·
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2

Solve PreCalc Question: Population Growth in 10 Years

  • GreenPrint
  • · Replies 1 ·
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1

Quadratics with inequalities from spivak's calc

  • johnnyies
  • · Replies 2 ·
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2

Finding the basis for a set of polynomials (linear algebra)

  • RossH
  • · Replies 1 ·
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1

Find equation of parabola with focus and directrix

  • LeadyKnight
  • · Replies 1 ·
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1

Probability Question: No Couples in Randomly Split Groups of Four Couples

  • mistermath
  • · Replies 4 ·
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4

Probability of Getting 40/40 on MCQ Test by Guessing

  • mohdakram
  • · Replies 1 ·
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1

How much 2.3% saline is needed to mix with 9.6% for 2.6 L of 5%?

  • findley
  • · Replies 1 ·
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1

Expressing 2*4*6*8*10*etc. mathematically

  • Baou
  • · Replies 4 ·
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4

Simplifying Sin[3θ] to Simplifying Trigonometric Expressions

  • Confusingmeh
  • · Replies 1 ·
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1

Finding P(X ≥ 3) for negative binomial with p = 0.6

  • mintsharpie
  • · Replies 1 ·
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1

How would you simplify [tex]a(y-b/3a)^3[/tex]

  • Strafespar
  • · Replies 1 ·
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1

Cubic Formula: Step-by-Step Solution for Finding x

  • Strafespar
  • · Replies 2 ·
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2

Calculating R Square of an Exponential Function

  • prof.DK
  • · Replies 4 ·
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4

Positioning 4 women among 5 men in fixed order

  • gaobo9109
  • · Replies 1 ·
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1

A simple Linear Algebra question that seems so hard

  • qwerty11
  • · Replies 4 ·
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4

How does y change when x decreases 23.3% and z increases 45.3%?

  • kee23
  • · Replies 11 ·
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11

Double variable equation- how to solve?

  • BR24
  • · Replies 6 ·
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6
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3

Find x and y in the following trig problem

  • Vinny Harlock
  • · Replies 1 ·
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1

Calculate Initial Acceleration Needed to Throw a Ball from Point A to B

  • Bosduif
  • · Replies 5 ·
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5

Finding radius from circle equations in standard form

  • MrNeWBiE
  • · Replies 16 ·
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16

Unique circular arrangements of n As and n Bs

  • simpleton
  • · Replies 10 ·
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10

P is not a subspace of R3. Why?

  • dcramps
  • · Replies 8 ·
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8

Solving Arc Tangent Squared: tan(2x) - 3cot(2x) = 0

  • asd1249jf
  • · Replies 3 ·
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3

Addition of exponents disconnect

  • dymand68
  • · Replies 5 ·
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5

Can You Solve These Challenging Algebra and Geometry Problems?

  • ScienceNewb
  • · Replies 12 ·
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12

Solving the Direction of an Airplane Flying in the Wind

  • Lazz72
  • · Replies 1 ·
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1

Probability question - Bayes' Theorem - 4 Balls, 2 white, P(all white) = ?

  • dharavsolanki
  • · Replies 4 ·
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4

Finding x-intercept of cubic functions? / Factoring cubic functions

  • liquidwater
  • · Replies 6 ·
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6

Coefficient of x^9y^10 in (3x^3 - 4y^2)^8

  • frankfjf
  • · Replies 2 ·
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2

Proving sec θ (sec θ - cos θ) = tan² θ

  • priscilla98
  • · Replies 2 ·
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2

Simplifying 15(x+2)² + (y+3)²/4 = 4 to ellipse form

  • iamsmooth
  • · Replies 1 ·
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1

Sum of series 1 + 3x + 5x² +

  • muso07
  • · Replies 5 ·
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5

Writing logarithms in terms of r, s, and t with change of base

  • terps
  • · Replies 4 ·
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4

Solve Parabola Equation: (10,0) ((13,27) (16,0)

  • thedarkhawk10
  • · Replies 1 ·
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1

Understanding Vector Spaces: Axioms and Operations

  • dcramps
  • · Replies 5 ·
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5

Finding eigenvector for eigenvalue 2 in 3×3 matrix

  • superkam
  • · Replies 2 ·
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2

What is the Solution for W, X, Y, and Z?

  • r-soy
  • · Replies 1 ·
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1

Finding intervals of trig functions

  • steve snash
  • · Replies 15 ·
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15

Solving equation involving trigonometry and complex numbers

  • thepopasmurf
  • · Replies 2 ·
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2

Probability/Statistics Question

  • srfriggen
  • · Replies 6 ·
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6

F(x)=x+(5/x), how do i find f^-1(x)?

  • Champdx
  • · Replies 1 ·
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1

Finding domains of functions with roots and fractions

  • MrNeWBiE
  • · Replies 17 ·
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17

Using Euler's Formula to Evaluate Complex Numbers in Rectangular Form

  • ezperkins
  • · Replies 3 ·
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3

Finding f^-1(9) and f(7) given f(22)=9 and f^-1(13)=7

  • steve snash
  • · Replies 4 ·
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4

Proving the Multiplication of Even Integers is a Multiple of 4: A Simple Proof

  • nastygoalie89
  • · Replies 1 ·
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1

Algebraic Manipulation: Solving Complex Equations

  • Schniz2
  • · Replies 2 ·
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2

Converting Kcal/day to umol/g/h

  • kathyt.25
  • · Replies 3 ·
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3

Sum to n terms of 1, (4-a)x, (7-a^2)x^2, (10-a^3)x^3

  • Procrastinate
  • · Replies 1 ·
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1

Inverse Function: Finding x for y in f(x)

  • Sweet_GirL
  • · Replies 1 ·
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1

What exactly does the period tell you in a trig graph?

  • mathkillsme
  • · Replies 1 ·
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1

Finding non-trivial solutions for a in a 3×3 homogeneous system

  • Martinuk
  • · Replies 1 ·
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1

To derive a linearized form of following equations

  • samieee
  • · Replies 3 ·
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3

Vector Integration Prove: Int over Closed S=0

  • aj06
  • · Replies 1 ·
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1

How to find out the area of a shape

  • Rohan11221
  • · Replies 2 ·
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2

A question from the Russian/Soviet Math Olympiad

  • slayer16
  • · Replies 1 ·
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1
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5

Range of a Function: Find h(x)

  • Codester09
  • · Replies 3 ·
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3

Why Can't I Derive r/R as √3 - 1 in This Chemistry Problem?

  • Puchinita5
  • · Replies 5 ·
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5

Probability function of a discrete random variable problem

  • stevecallaway
  • · Replies 1 ·
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1

How to Deduce the Coefficient of x^n in the Expansion of (x+3)(1+2x)^(-2)?

  • elitewarr
  • · Replies 1 ·
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1

Volume of a solid limited by two paraboloids

  • aicort
  • · Replies 5 ·
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5

What Causes Discontinuity in the Function 3/(x^2+x-6)?

  • FlO-rida
  • · Replies 18 ·
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18

Solving a linear equation with fractions

  • nathan17
  • · Replies 11 ·
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11

Finding the exact value for period in radians

  • steve snash
  • · Replies 2 ·
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2
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7