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

Why does my method for calculating this value from...?

  • Rijad Hadzic
  • · Replies 5 ·
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5

Find the expectation from probability

  • jaus tail
  • · Replies 19 ·
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19

Could someone please tell me what this notation means?

  • vr0nvr0n
  • · Replies 3 ·
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3

Mixed random variable distribution question

  • King_Silver
  • · Replies 7 ·
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7

How to Calculate Work from F vs x Graph?

  • MLash
  • · Replies 2 ·
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2

How Is Queueing Theory Applied in a Busy Store's Christmas Sale?

  • Erenjaeger
  • · Replies 6 ·
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6

How Does the Poisson Distribution Calculate Tornado Probabilities in Georgia?

  • King_Silver
  • · Replies 7 ·
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7

Mapping Circle to Ellipse with Dilation?

  • Stefk
  • · Replies 2 ·
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2

Proof of (x^n - 1) / (x - 1) = x^n-1 + x^n-2 + .... + x + 1

  • Stefk
  • · Replies 10 ·
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10

Finding distance of "P" from a plane OQR using vector

  • LeitHunt
  • · Replies 4 ·
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4

Modulus of a complex number with hyperbolic functions

  • roam
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2
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10

Simple Interest: Number of Years

  • zak100
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2

Compound Interest Homework: Amy vs Bob

  • zak100
  • · Replies 8 ·
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8
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2

Simple Interest Calculator for a 5% Rate - Help with Homework Statement

  • lil.l3b91
  • · Replies 7 ·
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7

Calculating Simple Interest Rate on a $2,000 Savings Account

  • lil.l3b91
  • · Replies 1 ·
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1

Solve equation |f^-1(x)|= 1+f^-1(x)

  • bunmohg
  • · Replies 2 ·
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2

Prove that the equation is satisfied at least once

  • giokrutoi
  • · Replies 1 ·
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1

How Do You Calculate the Length of TP in a Common Tangents Problem?

  • guan721
  • · Replies 4 ·
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4

BIDMAS Evaluating Expression Without Calculator

  • Svetlana_Vein
  • · Replies 3 ·
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3

Probability that two measurements have the same true value

  • Daniel Sellers
  • · Replies 5 ·
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5

Proofing Bounds of Natural Numbers Set in Math: Is it Clear?

  • fishturtle1
  • · Replies 1 ·
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1

Can a set include negative infinity and be bounded below

  • fishturtle1
  • · Replies 7 ·
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7

Looking for Intuitive Reasoning Behind Rational Exponents

  • DS2C
  • · Replies 13 ·
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13

Adding "annihilating terms" to factor

  • DS2C
  • · Replies 12 ·
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12

Perfect Stategy -- Placing picked numbers on two rows of a game

  • JimBob81345
  • · Replies 6 ·
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6

Adjusted present value, finance, economics

  • monsmatglad
  • · Replies 8 ·
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8

Same method not working in 2 age problems

  • zak100
  • · Replies 5 ·
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5

Proof of Bounded Set without Max or Min: (0,2) in (0,2)

  • fishturtle1
  • · Replies 5 ·
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5

Calculating Midpoint of Vector AB | Precalc Homework Solution

  • Mathematicsss
  • · Replies 25 ·
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25

Finding Solution to cos(x*L)=x

  • wesimpson
  • · Replies 4 ·
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4

How Can You Simplify the Calculation of a Complex Number Raised to a Power?

  • TheColector
  • · Replies 8 ·
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8

Understanding Limits with Two Path Tests

  • yecko
  • · Replies 11 ·
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11

Intro statistics question: probability of intersection

  • Eats Dirt
  • · Replies 9 ·
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9

Simple demonstration with real, rational and integers

  • Bestfrog
  • · Replies 4 ·
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4

Venn Diagram Homework: Understanding the Basics for 3rd Graders

  • revv
  • · Replies 7 ·
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7

Does the Pythagorean Identity Hold for sin^2(3x) + cos^2(3x)?

  • AMan24
  • · Replies 4 ·
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4

Proving Equivalence Relation of Complex Numbers Using Roots and Factoring

  • fishturtle1
  • · Replies 5 ·
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5

Probability (Permutation Combination)

  • Sai Alonzo
  • · Replies 20 ·
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20

Is 18 a Polynomial? Understanding Polynomials and Degrees

  • Hawksteinman
  • · Replies 6 ·
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6

Finding an equation for a plane containing 3 points

  • yecko
  • · Replies 5 ·
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5

Find Y when AxY=B, BxY=C, and B is unknown

  • 1plus1is10
  • · Replies 9 ·
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9

How to calculate the erfc of a number

  • vysero
  • · Replies 2 ·
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2

Determining the distance difference of towers of a bridge

  • Xarzu
  • · Replies 4 ·
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4

Algebra Question Solved | Quick and Easy Solution

  • tycoga8118
  • · Replies 1 ·
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1

Algrebra equations -- What is the value of B + O + A + T?

  • Natasha1
  • · Replies 6 ·
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6

How to prove this trigonometry equation?

  • Helly123
  • · Replies 8 ·
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8

Simple Law of Cosines Question

  • Xarzu
  • · Replies 2 ·
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2

Solving Irrational Equations: How to Discard Solutions

  • Alex126
  • · Replies 2 ·
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2

Equation for the amplitude of a line sweeping across a triangle

  • nordmoon
  • · Replies 6 ·
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6

How convert a point on an X and Y grid to a angle degree?

  • Xarzu
  • · Replies 4 ·
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4

Factoring Involving the Difference of Two Squares

  • DS2C
  • · Replies 6 ·
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6

Is it possible for [A:B1] to have a unique solotion...?

  • Rijad Hadzic
  • · Replies 20 ·
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20

How Many Students Like Either Reading or Jogging?

  • tzx9633
  • · Replies 7 ·
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7

For a round-robin of n teams find the number of different outcomes

  • Potatochip911
  • · Replies 21 ·
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21

Simplifying transfer function block diagram

  • Scott77
  • · Replies 4 ·
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4

Analyzing a Quantified Statement: True or False?

  • fishturtle1
  • · Replies 2 ·
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2

Kinematics question -- Adding and subtracting vectors

  • chardy87
  • · Replies 6 ·
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6

Solve Bayes' Rule Question: Probability of Rain Tomorrow

  • zzmanzz
  • · Replies 9 ·
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9

Minimal value to be determined

  • senmeis
  • · Replies 9 ·
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9

Bessel function transformation and also cos variation

  • baby_1
  • · Replies 1 ·
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1

Constructing a Torus: Logical Justification

  • Wendel
  • · Replies 1 ·
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1

Chebyshev polynomial approximation

  • says
  • · Replies 3 ·
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3

Upper & Lower Bounds Real Zeros-Polynomial Division, Proofs?

  • Saturnine Zero
  • · Replies 4 ·
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4

Simplifying Complex Fractions, final step

  • DS2C
  • · Replies 9 ·
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9

How Can I Solve This Equation to Find the Correct Expression?

  • roam
  • · Replies 7 ·
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7
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7

Solving Matrices Questions: Trace of a Matrix [tr(A)]

  • Tanishq Nandan
  • · Replies 18 ·
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18

Absolute value notation removal

  • kalpalned
  • · Replies 3 ·
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3

General form of an equation with undefined slope

  • Orson
  • · Replies 24 ·
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24

Matrix Multiplication Homework: Equations and Solutions"

  • Tanishq Nandan
  • · Replies 3 ·
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3

Understanding the Trigonometry of an Inclined Plane

  • bdolle
  • · Replies 2 ·
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2

Angle between a Point on a Ellipse and its Center

  • ecastro
  • · Replies 11 ·
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11

What is the Monthly Payment on a Car Loan with 6% Interest?

  • rmiller70015
  • · Replies 2 ·
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2

Fractional equations w/ binomial denominators

  • DS2C
  • · Replies 4 ·
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4

How Should the Company Allocate Machine Hours to Minimize Costs?

  • fishturtle1
  • · Replies 14 ·
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14

Why Does My Quadratic Equation Look Incorrect?

  • SunnyBoy123
  • · Replies 5 ·
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5

Solving Vector Spaces Tasks: Basis and Linear Transformations

  • peroAlex
  • · Replies 7 ·
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7

This is a logic problem about tennis.

  • Terrell
  • · Replies 37 ·
2
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37

Geometry: Finding a Side Length in Triangle Using Centroid

  • The Head
  • · Replies 2 ·
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2

Einstein summation convention and rewriting as a matrix

  • peterspencers
  • · Replies 16 ·
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16

Is Sin(x) Always Less Than x?

  • Karol
  • · Replies 19 ·
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19

Number of Marbles to be Removed?

  • zak100
  • · Replies 7 ·
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7

Not sure where to start in a large logistics problem

  • Tybras
  • · Replies 9 ·
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9

Vector dot product and parallel vectors

  • late347
  • · Replies 6 ·
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6

Is there a simpler way to prove that b = 0 if a + b = a?

  • Spoo Money
  • · Replies 3 ·
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3

Find the ratio of two line segments in a triangle

  • Andraz Cepic
  • · Replies 1 ·
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1

Convert x^3 -y^3 = 6xy into polar equation

  • Seung Tai Kang
  • · Replies 1 ·
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1

Log-Plots: Solving Homework Equations

  • WWCY
  • · Replies 23 ·
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23

Complex Plane Homework: Mobius Transformation Advice

  • WWCY
  • · Replies 2 ·
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2

Complex Numbers: Euler's formula problem

  • WWCY
  • · Replies 2 ·
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2

Prove transitive (Relations and functions)

  • Suyash Singh
  • · Replies 3 ·
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3

What Is the Probability of Choosing Banana Ice-Cream and Caramel Syrup?

  • DesertFox
  • · Replies 13 ·
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13

Show that ##\lim_{n\to\infty}(1+\frac{r}{n})^n=e^r##

  • McFluffy
  • · Replies 8 ·
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8

Finding Depth of Water Loss Using Surface Area

  • Kova Nova
  • · Replies 9 ·
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9
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10

Finding the Length of a Small Square

  • dirk_mec1
  • · Replies 8 ·
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8

Deductive agruments in finite math: wrong answer in book?

  • Back2College
  • · Replies 4 ·
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4

Calculation for Finance and Loans

  • Shakattack12
  • · Replies 1 ·
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1