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

Calculating Square Roots - Matrix Algorithm

  • danago
  • · Replies 7 ·
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7

Find Intersection Point of Vectors | Problem Solved

  • vinay_mamgain
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2

How can factoring help solve limit problems involving radicals?

  • Mach
  • · Replies 3 ·
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3

Double Angle Trig: Find Values of sin2x, cos2x, tan2x -90<x<180

  • brandon1
  • · Replies 4 ·
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4

Vector Algebra & Analytcc geometry in space

  • rigon
  • · Replies 1 ·
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1

How to Solve a System of Equations with a Parabola and Ellipse?

  • duki
  • · Replies 3 ·
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3

Microscopes and Students: How Many are Needed?

  • L²Cc
  • · Replies 9 ·
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9

Finding the determinant of a 3x3 matrix.

  • Mozart
  • · Replies 9 ·
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9

Mathbb C Meaning: A Mathematical Overview

  • theperthvan
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2

What are the dimensions of a small box given a specific volume increase?

  • sin_city_stunner
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4

How to find algebraic expressions?

  • princiebebe57
  • · Replies 3 ·
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3

What do you do if you have to evaluate arcsin2?

  • fizzzzzzzzzzzy
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5

Factoring 28s^2 + 8st - 20t^2: A Simplified Explanation and Solution

  • Rowah
  • · Replies 4 ·
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4

Solve Logarithmic Equation: 3 Solutions Explained

  • Essnov
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2
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4

Calculating Weight with Proportions for Balls of Different Sizes

  • 06Sport
  • · Replies 3 ·
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3

Proving the Inequality kx > ky for x < y and k < 0

  • rhule009
  • · Replies 7 ·
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7

Probability and Statistics, very basic stuff

  • parwana
  • · Replies 4 ·
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4

Proving this trigonometric identity

  • Couperin
  • · Replies 2 ·
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2
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6

Solving for 100x: A Math Puzzle

  • thomas49th
  • · Replies 3 ·
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3

Summing All Digits from 1 to 1 Billion

  • Qwark
  • · Replies 6 ·
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6

Question wording, please confirm

  • Trail_Builder
  • · Replies 7 ·
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7

Probability of two ones with 6 dice

  • bigplanet401
  • · Replies 2 ·
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2

Spotting Similar Triangles: Comparing ASA, SSS, SAS, and RHS Methods

  • thomas49th
  • · Replies 3 ·
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3

Simplifying Trigonometric Expressions

  • thomas49th
  • · Replies 9 ·
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9

Do These Matrix Inversion Properties Always Hold?

  • thepassenger48
  • · Replies 3 ·
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3

How Is Predicate Calculus Used to Formalize Mathematical Statements?

  • majeedh
  • · Replies 1 ·
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1

Is this inequality true? Prove or Disprove it!

  • twoflower
  • · Replies 2 ·
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2

Adding and subtracting Rational Expressions

  • caprija
  • · Replies 2 ·
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2

Mathematics for computer science

  • majeedh
  • · Replies 6 ·
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6

Finding Exponent for \sqrt{128} = 2^m

  • thomas49th
  • · Replies 6 ·
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6

Probability involving combinations

  • Eagle784
  • · Replies 2 ·
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2

Line of Best Fit: Should I Join Points or Use Graph?

  • thomas49th
  • · Replies 2 ·
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2

Major problem- finding the distance between two cities

  • intelx86
  • · Replies 7 ·
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7

Orbital Radii of planets and moons of jupiter

  • L²Cc
  • · Replies 8 ·
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8

I can't solve either of these.

  • 3dsmax
  • · Replies 13 ·
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13

Finding the Equation of a Perpendicular Line Passing Through Two Points

  • ruby_duby
  • · Replies 5 ·
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5

Proving the Equality of (A Φ B) Φ (C Φ D) and (A Φ C) Φ (B Φ D)

  • majeedh
  • · Replies 1 ·
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1

Proving At Least One Real Number Is Greater Than Average

  • neik
  • · Replies 3 ·
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3

Finding Exact Values for Trigonometric Functions

  • GLprincess02
  • · Replies 3 ·
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3

Cubic+ Quad Equations - y Axis

  • thomas49th
  • · Replies 2 ·
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2

Explaining Perpendicular Line to y=3x+4

  • thomas49th
  • · Replies 8 ·
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8

Can someone show me how this would turn out

  • thomas49th
  • · Replies 4 ·
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4

Calculate Expression for e from c and d

  • thomas49th
  • · Replies 3 ·
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3

Please correct this excercise

  • championnn
  • · Replies 2 ·
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2

Relatively Prime Numbers proof

  • Black Orpheus
  • · Replies 2 ·
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2

Quadratic - Completing the square

  • thomas49th
  • · Replies 5 ·
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5

How to Factor Polynomial Equations

  • The Matador
  • · Replies 5 ·
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5

Solve Quadratic Function: Find x-Intercepts & Just Touches x-Axis

  • wellY--3
  • · Replies 6 ·
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6

What is the value of a.(b + c) in a Regular Hexagon?

  • markyp23
  • · Replies 2 ·
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2

How do I solve for b in the equation R = \frac{ab}{a+b}?

  • thomas49th
  • · Replies 8 ·
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8

Step-by-Step Guide to Solving a Challenging Equation - Homework Help

  • thomas49th
  • · Replies 7 ·
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7

Solving a Root Equation for the Variable r

  • thomas49th
  • · Replies 61 ·
3
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61

How can you prove that ab = ba implies ba^(-1) = a^(-1)b in Fintie Groups?

  • patelnjigar
  • · Replies 14 ·
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14

Converting between coordinate planes

  • Jripe
  • · Replies 7 ·
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7

Finding HCF and LCM: A Quick Guide

  • chaoseverlasting
  • · Replies 5 ·
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5

Definition of Absolute Value of a Function

  • Raza
  • · Replies 4 ·
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4

How to i manipulate this fraction

  • seang
  • · Replies 2 ·
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2

Proof of Prime Number: Beginner's Guide

  • Black Orpheus
  • · Replies 5 ·
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5

Solving Perimeter Math Problems: Joe's House and Eric's Windows Explained

  • simplybecause
  • · Replies 3 ·
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3

Probabilities of Multiple Events

  • daewoo
  • · Replies 3 ·
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3

Solving Identities Homework: Proving 1/1+sinx=sec2x - tanx/cosx

  • ritagogna
  • · Replies 11 ·
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11

How can I construct a solution for a constant polygon with 2007 angles?

  • cavemiss
  • · Replies 12 ·
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12

Solve Trigonomic Equation: 5cos2x + cosx + 2 = 0

  • markyp23
  • · Replies 4 ·
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4

What is the formula for rise/fall time of a sine wave?

  • Tom McCurdy
  • · Replies 3 ·
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3

How Do You Substitute in a Polynomial Function?

  • caprija
  • · Replies 5 ·
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5

Why Is the Angle Considered 90 Degrees?

  • Joza
  • · Replies 1 ·
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1

Simplifying Trigonometric Problems | Proven Equations & Solutions

  • imbroglio
  • · Replies 3 ·
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3

Mean Value of Ordinates of Semicircle

  • John O' Meara
  • · Replies 5 ·
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5

Please check this maths question thanx

  • faisal
  • · Replies 3 ·
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3

Matrices - finding critical values

  • steelphantom
  • · Replies 9 ·
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9
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7

What is the Cosine Rule for Triangles with Operands Greater Than 1?

  • W3bbo
  • · Replies 6 ·
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6

Solving Age Problem with Algebra: James & Emma's Ages x721

  • griefcrack
  • · Replies 2 ·
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2

Solving a Boat Navigation Problem: A Family's Journey Downstream

  • danago
  • · Replies 1 ·
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1

Find a Degree Three Polynomial with x-2 Remainder of 3 - Hint: Work Backwards!

  • southerngirl5390
  • · Replies 2 ·
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2

Vector Description of a Point P on Line AB

  • twofish
  • · Replies 3 ·
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3

Connecting to an Overloaded Web Server: How Many Attempts Before Success?

  • steve23063
  • · Replies 8 ·
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8

A simple problem that's dirving me crazy (Perimeter and length of each side)

  • phoenix20_06
  • · Replies 5 ·
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5

Finding Maximum Range of a Projectile: Velocity and Formula

  • phoenix20_06
  • · Replies 4 ·
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4

People born on the same day week and month

  • hyderman
  • · Replies 5 ·
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5

Toni and the Bike: Physics Exam Puzzle

  • griefcrack
  • · Replies 3 ·
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3

Locus of Q in Coordinate Geometry: Find the Answer

  • Harmony
  • · Replies 1 ·
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1

Number Theory Help: Proving Expression is Equal to Prime Number

  • Little Gem
  • · Replies 8 ·
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8

Why 2p=ln[(1-cost)/(1+cost)] => t=(1/coshp)^2

  • astronomia84
  • · Replies 3 ·
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3

Help on the doomsday equation/birthday equation

  • lilxchristina
  • · Replies 5 ·
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5

Finding the power using logarithm

  • disregardthat
  • · Replies 6 ·
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6

What is the solution to (2-11i)^(1/3)?

  • GregA
  • · Replies 6 ·
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6

How Likely Is a Jockey to Fall in the Next Ten Rides?

  • bjgawp
  • · Replies 1 ·
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1

Calculating Percent Uncertainty of Circle Area w/ Radius 1.8x10^4 cm

  • future_vet
  • · Replies 5 ·
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5

Finding Angle B in Triangle ABC with Side Lengths a, b, c

  • disregardthat
  • · Replies 4 ·
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4

How many ways are there to form a committee

  • tourmaline
  • · Replies 4 ·
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4

Distance calculation (right triangle)

  • future_vet
  • · Replies 5 ·
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5

Sequences and series - try again

  • oilersforever72
  • · Replies 7 ·
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7

Who Has What? Solving Inequalities in Number Theory

  • furqan_888
  • · Replies 3 ·
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3

UK Maths Challenge: Struggling with Numbers 23 & 25

  • Trail_Builder
  • · Replies 8 ·
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8

Solve for k: Difference between nth terms of two series > 14

  • oilersforever72
  • · Replies 2 ·
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2

Solve Counting Problem: How Many Students Left Unfinished?

  • haki
  • · Replies 8 ·
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8

Is this a graph of a delta function?

  • Brewer
  • · Replies 2 ·
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2