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 Many Integers Meet the Condition {√n - √(23×24)}² < 1?

  • pratikaman
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Need help with basic system of equations with two unknown values

  • Hivoyer
  • · Replies 5 ·
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5

System of two equations with fractions

  • Hivoyer
  • · Replies 4 ·
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4

How to Divide a Polynomial by a Binomial Using Long Division

  • Googl
  • · Replies 11 ·
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11

Simplify Expression and Find Product of a*b + 15m + 11n + 8

  • ParisSpart
  • · Replies 5 ·
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5

Calculating ρ(Y,Z) for Independent Variables X1..Xn+Xn+1

  • ParisSpart
  • · Replies 5 ·
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5

Geometric and arithmetic series

  • Government$
  • · Replies 5 ·
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5

Solve Circles & Chords: Find Equations to Satisfy Conditions

  • odolwa99
  • · Replies 6 ·
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9

Cartesian and vector equations

  • Jbreezy
  • · Replies 8 ·
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8

Calculating the Distance of a Line to the Origin in 3D Space

  • Jbreezy
  • · Replies 27 ·
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27

Periodic or not? Determine the wave function

  • jackscholar
  • · Replies 5 ·
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5

How to Solve Logarithmic Equations? Find x^2*y^5/z^4

  • Mermaid4220
  • · Replies 8 ·
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8
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9

Mathematical Logic and Structures

  • rafa_mota04
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1
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11

Calculating Value of "a" for Independent X,Y Variables

  • ParisSpart
  • · Replies 6 ·
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6

Solve the equation exactly for x

  • Mermaid4220
  • · Replies 9 ·
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9

How do I Expand a Cubic Problem?

  • Grove1996
  • · Replies 5 ·
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5

Combinatorics Problem: Finding Number of Subsets in a Set of Four-Digit Numbers

  • Government$
  • · Replies 2 ·
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2

Learning curve of EM? (Not homework)

  • martinlematre
  • · Replies 4 ·
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4

Probability Quiz: Variables X1 to X46, Expectation E(Xj)=0

  • ParisSpart
  • · Replies 4 ·
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4

Can you help me solve for arcsin(2) with complex numbers?

  • Craptola
  • · Replies 2 ·
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2

Trigonometry Problem - Confused over multiple possible angle sizes.

  • CallMeSwayze
  • · Replies 5 ·
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5

Show this function is associative (or provide a counter example)

  • ArcanaNoir
  • · Replies 69 ·
3
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69

Calculate L using Omega, Lo = 16, and h = 1.5

  • eddievic
  • · Replies 4 ·
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4

Finding explicit formula of this recursion formula

  • Ace.
  • · Replies 4 ·
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4

Solve Equation of a Circle: Get Help Now!

  • odolwa99
  • · Replies 2 ·
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2
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1

Probability - equation involving prime number

  • Saitama
  • · Replies 5 ·
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5

Polynomial Division 2: Step-by-Step Solution for (x^3-3x^2+12x-5)/(x-2)"

  • eddievic
  • · Replies 4 ·
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4

Finding Permutations with Repetitions: n, x, a, b, c, d

  • Big-Daddy
  • · Replies 12 ·
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12

Fraction Simplification: Solving Equations with Constants C, L, and R

  • jkface
  • · Replies 2 ·
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2

Trouble with the definitions of equivalent and collinear.

  • Esoremada
  • · Replies 1 ·
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1

Finding the range of values for tan theta > 1

  • needingtoknow
  • · Replies 1 ·
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1

Solving a Triangle's Angles with an Equation

  • Saitama
  • · Replies 6 ·
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6

Probability Wind or Rain if it's Windy?

  • Whalstib
  • · Replies 28 ·
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28

External division of a line segment

  • Nero26
  • · Replies 7 ·
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7

Probability & Expectation Value of X + Y

  • ParisSpart
  • · Replies 7 ·
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7

How many ways can a cube be painted with distinct colors?

  • Saitama
  • · Replies 7 ·
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7

Difficult Stats Problem (Repeated Elements)

  • Big-Daddy
  • · Replies 7 ·
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7

Few questions different topics

  • lionely
  • · Replies 6 ·
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6

Variables and their common density

  • ParisSpart
  • · Replies 11 ·
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11

Trigonometry 3d pyramid question

  • needingtoknow
  • · Replies 8 ·
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8

Probability of combination lock

  • stunner5000pt
  • · Replies 2 ·
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2

What Are the Probabilities of Different Seating Arrangements at a Party?

  • stunner5000pt
  • · Replies 2 ·
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2

What is the value of alpha + beta + gamma?

  • Saitama
  • · Replies 11 ·
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11

Product Moment Correlation coefficient

  • songoku
  • · Replies 4 ·
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4

Parametric Vector Equation for Line AB Using λ as the Parameter

  • Jbreezy
  • · Replies 10 ·
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10

Points relative to vectors. And Eq of line. Vectors

  • Jbreezy
  • · Replies 5 ·
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5

How to count Spearman Rank order correlation

  • Drudge
  • · Replies 1 ·
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1

Number of Solutions for ##\frac{xy}{x+y}=2^3\times 3^4 \times 5^6##

  • Saitama
  • · Replies 16 ·
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16

Finding the domain of this function

  • nothingsus
  • · Replies 3 ·
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3

Constant Doubling Time Functions: Exponential vs. Linear | Homework Help

  • physicsernaw
  • · Replies 2 ·
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2

Solving Equation |x|+|y|+|z|=10 for I: A Comprehensive Guide

  • Saitama
  • · Replies 7 ·
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7

Statistics- Rolling a loaded die

  • dinospamoni
  • · Replies 3 ·
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3

Statistics Question -> Elevator Question

  • GreenPrint
  • · Replies 1 ·
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1

Linear regression. How to calculate this problem

  • Drudge
  • · Replies 2 ·
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2

Find the period of f(x) = e^(3{x}) where {x} is the fractional part

  • utkarshakash
  • · Replies 3 ·
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3

Vector Proof: x x v = u x v = x x u

  • Jbreezy
  • · Replies 7 ·
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7

Trigonometry Limit Homework: Get Started Now!

  • songoku
  • · Replies 6 ·
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6

Curve and tangent line problem, finding the area of enclosed region

  • needingtoknow
  • · Replies 3 ·
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3
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2

Symmetry Problem Homework: Find Point of Ellipses

  • scientifico
  • · Replies 6 ·
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6

Vectors - Groundspeed question

  • kariibex
  • · Replies 5 ·
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5

How to add four arctangents efficiently

  • mgamito
  • · Replies 2 ·
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2

Trigonometric functions ->sine function EASY

  • Voltman123
  • · Replies 7 ·
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7

Notation Confusion in Linear Transformations

  • Offlinedoctor
  • · Replies 1 ·
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1
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3

What Is the Probability of Getting Exactly 50 Women in a Sample of 100?

  • Drudge
  • · Replies 22 ·
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22

How Do You Solve This Trigonometric Limit Problem?

  • songoku
  • · Replies 4 ·
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4
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5

Find the Circumradius for a Triangle

  • AGNuke
  • · Replies 2 ·
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2

Confused about answer wolfram alpha spat out to me.

  • Clever_name
  • · Replies 5 ·
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5

Can someone tell me if this is a bipartite graph?

  • Topgun_68
  • · Replies 8 ·
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8

What Was the Accuracy of HIV Testing for Marriage Licenses in Illinois in 1988?

  • Darth Frodo
  • · Replies 2 ·
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2

Equation of a Circle Given Touching Point on x-axis and Containing Point

  • Government$
  • · Replies 6 ·
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6

How are these two equations equal? trig identities possibly?

  • Chaoticoli
  • · Replies 3 ·
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3

Radioactive decay - log question

  • karmatic
  • · Replies 3 ·
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3

'Is $ℜ$ an equivalence relation?

  • zeraoulia
  • · Replies 2 ·
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2

Converting scientific notation to standard digit numbers

  • chestycougth
  • · Replies 3 ·
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3

Combination: 3 boys with 7 chairs

  • Michael_Light
  • · Replies 3 ·
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3

Finding period of f(x) = cos(cos x) + cos(sin x)

  • utkarshakash
  • · Replies 6 ·
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6

Finding the Standard Equation for the Ellipse with Given Vertices and Foci

  • iheartmydog
  • · Replies 1 ·
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1

Help me to verify some Probability answers

  • juanitotruan77
  • · Replies 2 ·
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2

Eliminating parameters and graphing parametric equations

  • Supreme
  • · Replies 1 ·
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1

Proving Combinations Formula | Step-by-Step Guide and Examples

  • Government$
  • · Replies 19 ·
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19

Probability of Getting 10 Pairs from a Box of 30 Socks

  • juanitotruan77
  • · Replies 61 ·
3
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61

Derive average rate of change formula of cos

  • andrewkg
  • · Replies 2 ·
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2

Inverse Functions Homework: Find f^-1, g^-1, Show f^-1 f=x

  • kingstar
  • · Replies 2 ·
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2

How to Solve an Inequality with Greatest Integer Function and Fractional Part?

  • utkarshakash
  • · Replies 2 ·
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2

Factor Theorem: What is the correct way to use it?

  • matthew1982
  • · Replies 3 ·
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3

What is the relationship between the perpendiculars in a 3D vector?

  • lionely
  • · Replies 6 ·
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6

Permutations: Arranging Red, Green & Gray Books on a Shelf

  • Government$
  • · Replies 2 ·
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2

Estimating Expected Value of a Random Variable X from 129 Rolls of a Dice

  • ParisSpart
  • · Replies 6 ·
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6

Basic algebra ex. prob., can't work out a step

  • fisixfred
  • · Replies 6 ·
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6
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1

Finding a Normal Vector for a Plane Defined by Two Lines

  • fawk3s
  • · Replies 2 ·
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2

Trig equation involving multiple angles

  • waterliyl
  • · Replies 1 ·
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1
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1