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

Formula for compounded contributions

  • joema
  • · Replies 11 ·
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11

Find k in JEE Mains Homework: Solving Equations with Geometric Progressions

  • smart_worker
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2
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3

Area of a right triangle with little data

  • mafagafo
  • · Replies 8 ·
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8

What Is the Explanation for the 2n(n+1) in the FP1 Mark Scheme?

  • bobbricks
  • · Replies 8 ·
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8

Deriving the quadratic formula.

  • XxXCausticxXx
  • · Replies 13 ·
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13

Find the rationalizing factor of a mixed surd

  • Govind_Balaji
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1

Trig identities, prove (cot(x)-tan(x)=2tan(2x))

  • noahsdev
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3

How Do You Calculate Time in an Exponential Decay Formula?

  • eddievic
  • · Replies 15 ·
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15
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24

Combinations Math Problem: Finding Possible Pairings with 10 Women and 12 Men

  • member 428835
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5

Find Exact Value of cosθ Given sinθ=19/51

  • cosmictide
  • · Replies 2 ·
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2

Upper Bound of H in GCSE Maths

  • tomtomtom1
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1

Help With Upper & Lower Bounds

  • tomtomtom1
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2

Simplifying Expression with Positive Variables a, b, and c | Step-by-Step Guide

  • BruceSpringste
  • · Replies 3 ·
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3

How to Solve a^2011 for a Complex Number Satisfying a^2-a+1=0?

  • sankarshana016
  • · Replies 6 ·
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6

Solving Exp(-3ln(x)): Finding the Next Step | Homework Help

  • SteveDC
  • · Replies 2 ·
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2

Solving Equation: x^5 + k^2x = 0

  • Atomised
  • · Replies 5 ·
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5

Find where the functions intersects

  • WesleyGibson
  • · Replies 2 ·
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2

Explaining the Reflection of e^x at y=2

  • brycenrg
  • · Replies 8 ·
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8

Meaning of multi zero solutions

  • Atomised
  • · Replies 5 ·
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5

Isolating variable confounded by cursed reciprocals

  • Atomised
  • · Replies 8 ·
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8

Simultaneous Equations and Fields

  • Atomised
  • · Replies 4 ·
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4

Mastering Algebra Proofs for Solving Equations Efficiently

  • smart_worker
  • · Replies 6 ·
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6

When Will the Cistern Become Empty with Pipes X, Y, and Z Operating?

  • 22990atinesh
  • · Replies 6 ·
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6

Selecting things arranged around a circle

  • Saitama
  • · Replies 16 ·
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16

Series expansion/algebra problem

  • BOAS
  • · Replies 2 ·
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2

Find the sum of the first n terms

  • lionely
  • · Replies 7 ·
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7

What is the formula for finding the sum to n terms in a geometric series?

  • lionely
  • · Replies 5 ·
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5

The angle between two straight lines.

  • adjacent
  • · Replies 5 ·
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5

Linear System with Two Variables

  • Atomised
  • · Replies 12 ·
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12

Can Basic Set Theory Explain Why an Element Belongs to a Set?

  • vrble
  • · Replies 12 ·
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12

Need help understanding the binomial series

  • stfz
  • · Replies 3 ·
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3

Changing center point of a cylinder

  • mpittma1
  • · Replies 14 ·
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14

Solve Quadratic Equation: 5x^2 - 16tx + 3t^2

  • Atomised
  • · Replies 5 ·
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5

Solve f(x) = ce^-x, Find E(x) and Probability Generating Function

  • JoanneTan
  • · Replies 5 ·
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5

Find Value of α for Scalar Product a\cdotb = 0 & Explain Phys. Significance

  • subzero0137
  • · Replies 2 ·
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2

A,b,c satisfying given conditions

  • utkarshakash
  • · Replies 7 ·
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7

When is the root of a number both negative and positive?

  • BruceSpringste
  • · Replies 4 ·
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4

Understanding the Absolute Value Formula: Is it a Rule or a Myth?

  • mather
  • · Replies 8 ·
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8

Proving the Validity of Sin, Cos, and Tan Equations in Right Triangles

  • mather
  • · Replies 14 ·
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14

Algebra, how to separate a term in the sum of two roots

  • rwooduk
  • · Replies 13 ·
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13

Proofs by contraposition and contradiction

  • spaghetti3451
  • · Replies 5 ·
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5

Problems on permutation and combination

  • spaghetti3451
  • · Replies 2 ·
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2

Problem with squares and roots

  • BruceSpringste
  • · Replies 4 ·
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4

Help required w/ vectors: general equations, intersection points

  • need_aca_help
  • · Replies 10 ·
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10

Finding equation of a plane with 3 points

  • uzman1243
  • · Replies 2 ·
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2

Question on Triangles and the lines intersecting through it

  • Rerocker
  • · Replies 1 ·
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1

Which expansion is used for this result?

  • rwooduk
  • · Replies 2 ·
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2

Given a transformation of the plane F(x,y) = (2x+y,x-2y), find F^-1.

  • kris89
  • · Replies 2 ·
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2

His average speed for the first 4km is what?

  • chikis
  • · Replies 15 ·
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15

What is the minimum number of red balls in the bag?

  • utkarshakash
  • · Replies 12 ·
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12

Quadratic equation word problem

  • musicgold
  • · Replies 3 ·
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3

Calculating Vector Sum: 40 ft and 14 degrees south of west - Vectors J and K

  • gurmeet97
  • · Replies 5 ·
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5

Vector Ratios: Solving for Unknowns | Homework Help

  • abdo799
  • · Replies 6 ·
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6

Finding |a1-a4001| in an arithmetic progression with 4001 terms

  • utkarshakash
  • · Replies 2 ·
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2

Intersecting Functions: Solving Logarithmic Equations

  • TheRedDevil18
  • · Replies 8 ·
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8

Pre Calculus problem in need of help

  • TheKracken
  • · Replies 9 ·
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9

Hypothesis Test: Mean Content of Containers ≥ 3L

  • princejan7
  • · Replies 6 ·
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6

Possibly wrong permutation/combination question?

  • stfz
  • · Replies 3 ·
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3

How Do You Calculate the Length of a Belt in a Standardized Test Problem?

  • member 508213
  • · Replies 3 ·
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3

Solve Logarithmic Equation: \log_{2010} 2011x = \log_{2011} 2010x

  • mafagafo
  • · Replies 3 ·
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3

Different ways of solving for x in trig. equations

  • Attis
  • · Replies 4 ·
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4

Proving sin4x + 2sin2x = 8sinxcos^3x Using Trigonometric Identities

  • Attis
  • · Replies 17 ·
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17

Trig ((tanx - sinx)/sin^3x) = (1/(cosx - cos^2x))

  • Attis
  • · Replies 4 ·
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4

Is the Probability Formula P(C∩G) = P(G)P(C|G) Correct?

  • princejan7
  • · Replies 3 ·
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3

Solving for a variable in an equation that involves vectors

  • Chetlin
  • · Replies 7 ·
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7

Summation of 'n' terms of the given expression

  • smart_worker
  • · Replies 5 ·
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5

Question from higher algebra - hall knight

  • smart_worker
  • · Replies 4 ·
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4

Use trig identities to show that

  • ivan_x3000
  • · Replies 3 ·
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3

Proving Identities: cotx-tanx=2cot 2x

  • keishaap
  • · Replies 13 ·
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13

Really a Question about Notation

  • Atomised
  • · Replies 5 ·
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5

Distance of x,y and z intercepts of a plane

  • summer27
  • · Replies 3 ·
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3

Is Only If Logic Misinterpreted in Mathematical Statements?

  • Atomised
  • · Replies 9 ·
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9
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3

Help solving for 3 equations and 3 unknowns

  • skybox
  • · Replies 4 ·
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4

Writing a system of conic equations

  • Jhenrique
  • · Replies 4 ·
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4

Solving Three Variable Equations: Finding x, y, and z

  • smart_worker
  • · Replies 2 ·
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2

Radius of circumference as function of arc lenght and height

  • jonjacson
  • · Replies 5 ·
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5

Understanding Trigonometric Functions and Their Geometric Meaning

  • ViolentCorpse
  • · Replies 2 ·
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2

Which Proof Should I Use for Binary Relations and Proofs Homework?

  • Panphobia
  • · Replies 7 ·
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7

Show what happens to 'U' if 'a' is doubled.

  • SalfordPhysics
  • · Replies 2 ·
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2

What equation can I use to find the value of L2?

  • khazaymeh
  • · Replies 2 ·
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2

How Many Ways to Select Elements in a 6x5 Array with Constraints?

  • gummyshark
  • · Replies 5 ·
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5

Has my community college skipping important precalc concepts?

  • mmm_math
  • · Replies 1 ·
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1

Partial fraction decomposition of 1/(s²(s²+4))

  • icesalmon
  • · Replies 6 ·
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6
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6

Finding complex solutions from an eqn.

  • JC3187
  • · Replies 1 ·
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1

Vector with angles with axis (book wrong?)

  • kkinsky
  • · Replies 3 ·
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3

Point of tangency to a circle from a point not on the circle

  • purplecows
  • · Replies 6 ·
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6

Finding the Dimension of the Union of Subspaces

  • AwesomeTrains
  • · Replies 2 ·
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2

A tricky trigonometric problem

  • sooyong94
  • · Replies 9 ·
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9

Summing up binomial coefficients

  • utkarshakash
  • · Replies 4 ·
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4

Solve the SYLLABUS Word Problem with Combinations | Homework Help

  • lionely
  • · Replies 6 ·
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6

Number of Triangles in a Regular Polygon: Is nC3 the Correct Formula?

  • utkarshakash
  • · Replies 2 ·
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2

Can a Polynomial be Transformed to Eliminate its Quadratic and Linear Terms?

  • Jhenrique
  • · Replies 1 ·
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1

Given the Set S ={1,2,3,4}. Define a relation on S that

  • knowLittle
  • · Replies 14 ·
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14

Arranging Persons in a Row with Constraints

  • utkarshakash
  • · Replies 3 ·
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3

Is binomial distribution approriate

  • aaaa202
  • · Replies 1 ·
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1
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1