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

Subtraction and division problem: volume of 3 balls in cylinder

  • zak100
  • · Replies 2 ·
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2

How Do You Calculate Force in Vector Form?

  • williamwong0402
  • · Replies 4 ·
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4

Solve for unknown radius without trig

  • caters
  • · Replies 21 ·
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21

Who Gets a Free Book and Calendar at the Book Sale?

  • t3rom
  • · Replies 7 ·
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7

Solving Algebraic Expression with Limits

  • krbs
  • · Replies 5 ·
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5

Comparing angles opposite radius of a circle

  • zak100
  • · Replies 12 ·
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12

Solve acos²θ+bsinθ+c=0 for all values 0≤θ≤360°

  • DanRow93
  • · Replies 11 ·
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11

What is the exterior angle of a triangle?

  • zak100
  • · Replies 15 ·
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15
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22
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10

Simplifying Double Angle Formula: Cos^2 8x - Sin^2x

  • Veronica_Oles
  • · Replies 6 ·
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6

Using remainder factor theorem

  • Terrell
  • · Replies 1 ·
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1

Expressing Quadratic Equations in Different Forms

  • chwala
  • · Replies 7 ·
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7

Avg of two terms & largest possible value

  • zak100
  • · Replies 4 ·
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4

Solving a Trigonometric Equation

  • FritoTaco
  • · Replies 3 ·
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3

Checking a proof of a basic property of prime numbers

  • Ghost Repeater
  • · Replies 6 ·
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6

Comparing 2 Fraction based variables

  • zak100
  • · Replies 10 ·
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10
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4

Increasing the number of workers reduces the number of days

  • zak100
  • · Replies 5 ·
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5

Proofs of the four type of intervals

  • Kernul
  • · Replies 13 ·
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13
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10

Doubt in an inequality problem

  • Thiru07
  • · Replies 3 ·
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3

Solving Quadratic Trig Equation

  • Veronica_Oles
  • · Replies 6 ·
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6

Why Do Additional Solutions Appear in Trigonometric Equations?

  • Veronica_Oles
  • · Replies 2 ·
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2
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18
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7

Creating Equations: Homework Help

  • Ugnius
  • · Replies 9 ·
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9

How Does Gaussian Elimination Solve This System of Equations?

  • late347
  • · Replies 8 ·
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8

How Can I Mathematically Represent Five Mean Values in a Formula?

  • random39a
  • · Replies 3 ·
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3
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6

How do I approach this problem? (Cubes within a larger cube....)

  • Thiru07
  • · Replies 21 ·
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21

What would the other villager tell me to do in order to reach my destination?

  • Mr Davis 97
  • · Replies 5 ·
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5

Proving Inequalities: Tips and Strategies for Success

  • Kernul
  • · Replies 10 ·
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10

Is this a valid inductive proof?

  • mustang19
  • · Replies 10 ·
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10

How Can the Explorer Save Himself from Cannibals with One Question?

  • Mr Davis 97
  • · Replies 2 ·
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2

Logic puzzle with 100 statements

  • Mr Davis 97
  • · Replies 19 ·
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19

Gaussian elimination system of Eqs, the case of no solution

  • late347
  • · Replies 4 ·
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4

Linear Trig Equations: Solving sin(x + pi/4) = √2 cos x

  • Veronica_Oles
  • · Replies 6 ·
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6

Algebra II, Rational Expressions & Square Roots problems

  • Unteroffizier
  • · Replies 8 ·
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8

Solving for kd in Quadratic Equations: Steps and Techniques

  • fanieh
  • · Replies 2 ·
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2

Find an appropriate matrix according to specific conditions

  • Avibu
  • · Replies 8 ·
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8

Snell's law and inverse function

  • Karol
  • · Replies 4 ·
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4

Verify the Trigonometric Identity

  • FritoTaco
  • · Replies 15 ·
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15

Need help in understanding a percentage problem.

  • Thiru07
  • · Replies 15 ·
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15

What is the range of the composite function h?

  • Quadrat
  • · Replies 4 ·
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4

Solve for Sin teta=0 | Math Homework Help

  • lioric
  • · Replies 8 ·
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8

Inverse Function Homework: Simplifying Sin^-1(2Sin^-1(0.8))

  • Karol
  • · Replies 7 ·
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7

Synthetic Division for Higher Order Polynomials

  • zzmanzz
  • · Replies 4 ·
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4

Initial conditions for recurrence relation

  • Mr Davis 97
  • · Replies 2 ·
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2

Can you help me solve this Boolean algebra problem?

  • doktorwho
  • · Replies 1 ·
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1

Completing the square word problem

  • Terrell
  • · Replies 9 ·
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9

Recurrence Relation for Two Consecutive 0s in Ternary Strings

  • Mr Davis 97
  • · Replies 2 ·
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2

Solve Limit: $$\lim_{x\to0} \frac{sin(\pi(Cos^2(x)))}{\pi(Cos^2(x))}$$

  • Nipuna Weerasekara
  • · Replies 5 ·
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5

Mastering Logarithms: Simplifying Complex Expressions with Multiple Logs

  • rashida564
  • · Replies 7 ·
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7

Proving -(-x)=x: Step-by-Step Guide

  • em2008
  • · Replies 21 ·
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21

High Temperature Limit of Entropy in a Two Level System

  • Kara386
  • · Replies 2 ·
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2

Got stuck due to the inequality not being satisfied

  • decentfellow
  • · Replies 21 ·
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21

Vector algebra (proving you have a parallelogram by using vectors)

  • Matejxx1
  • · Replies 7 ·
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7

Showing associativity for a particular set

  • Raghav Gupta
  • · Replies 13 ·
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13

Combinatorial Problem of Letters

  • Seydlitz
  • · Replies 2 ·
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2

How do I Graph the Sine Function for y=2-sin(2πx/3)?

  • FritoTaco
  • · Replies 8 ·
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8

CDF of minimum of N random variables.

  • ashwinnarayan
  • · Replies 1 ·
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1

Find the integer that is nearest to the area of complex plane A

  • Greychu
  • · Replies 1 ·
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1

How Can a Mixed Doubles Tournament Avoid Family Pairings?

  • diana.hole
  • · Replies 1 ·
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1

Find a general expression for time of impact of a paper plane

  • peglegmeg152
  • · Replies 1 ·
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1
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13

Finance formulas to compare the best value of a house

  • Niaboc67
  • · Replies 1 ·
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1

Proving $\tan^{-1}(-x)=-\tan^{-1}(x)$

  • Karol
  • · Replies 10 ·
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10

Beginning Sets: Advice on Set Building Notation?

  • Ryaners
  • · Replies 2 ·
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2

Need to be sure of this boolean algebra problem's solution

  • Amr719
  • · Replies 1 ·
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1

Linear Dependence and Non-Zero Coefficients

  • Euler2718
  • · Replies 3 ·
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3

How Do You Solve These Probability and Combination Problems?

  • Sarina3003
  • · Replies 6 ·
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6

Modeling WIth Sinusoidial Functions

  • Veronica_Oles
  • · Replies 7 ·
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7

How Does the Condition x > -1 Influence the Inequality x² + 1/(x²+1) ≥ 1?

  • Nipuna Weerasekara
  • · Replies 6 ·
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6

Stuck with this non-trivial algebra, solving for x

  • Cocoleia
  • · Replies 7 ·
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7

Prove divisibility, mathematical induction

  • Jaroslav
  • · Replies 8 ·
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8

How Can Dynamic Programming Optimize Study Hours for Maximum Grades?

  • Danielm
  • · Replies 8 ·
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8

Rearrange Formula: 2/(x-2) + 2/(x+2) = 1/2 to Ax2+ Bx + C = 0

  • Natasha1
  • · Replies 11 ·
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11

Stuck on expressing a complex number in the form (a+bi)

  • Razberryz
  • · Replies 8 ·
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8
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22

Unsure if this is a trig identity or calculus

  • Arnoldjavs3
  • · Replies 7 ·
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7

Counting number of consecutive elt's in nit string

  • Mr Davis 97
  • · Replies 2 ·
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2

What is the formula for adding a sequence of consecutive numbers?

  • shina
  • · Replies 5 ·
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5

Possible Password Combinations

  • Mr Davis 97
  • · Replies 9 ·
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9

Doublecheck homework percentages, and equations

  • late347
  • · Replies 5 ·
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5

Probability of Getting at Least One Card from Each Suit

  • Taylor_1989
  • · Replies 6 ·
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6

A proof in the Hilbert-style axiom system

  • PWiz
  • · Replies 2 ·
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2

Algebra simultaneous equations Question

  • Rococo
  • · Replies 8 ·
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8

Equivalent Expression for cot(-π/4) in Terms of Acute Angle

  • Veronica_Oles
  • · Replies 3 ·
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3

Why Are My Trig Ratios csc and sec Incorrect for (7π)/4?

  • Veronica_Oles
  • · Replies 2 ·
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2

Find Radian Angle: Value of cos θ = -1/2, π ≤ θ ≤ 2π

  • Veronica_Oles
  • · Replies 1 ·
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1

Form Team of 4 Boys with No More than 1: Combination Problem

  • Taylor_1989
  • · Replies 7 ·
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7

Combinatorics Problem: Seating a Family of 8 with Twins and Siblings

  • Mr Davis 97
  • · Replies 2 ·
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2

Eliminating Odd Powers in the Expansion of (1+x)^n

  • Lilia
  • · Replies 3 ·
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3

Combinatorics Problem: Finding Groups of 3 Numbers with Average Condition

  • Mr Davis 97
  • · Replies 2 ·
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2

Proving Natural Log Proof: ln|1+σx|

  • Nusc
  • · Replies 10 ·
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10

How Many Subset Pairs (X, Y) Meet These Mathematical Conditions?

  • Lilia
  • · Replies 16 ·
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16

How to find a quadratic function from a table of values?

  • Tris Fray Potter
  • · Replies 4 ·
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4

Can someone explain this complex math problem?

  • Voltux
  • · Replies 1 ·
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1

Can the Limit of a Function Exist Despite Contradictory Values?

  • Dank2
  • · Replies 4 ·
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4