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 Do You Determine the Vector Equation of a Plane Without a Z-Intercept?

  • planauts
  • · Replies 5 ·
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5

Finding |z1| when |z1-2z2 / 2-z1z2*| = 1 and |z2| ≠ 1

  • Saitama
  • · Replies 8 ·
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8

TV Game Show Probability: 10 out of 15 Chosen, N Audience Possibilities

  • sam_0017
  • · Replies 1 ·
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1

Easy exponent precalc problem. 4^(1+√2) * 4^(1-√2)

  • Jurrasic
  • · Replies 4 ·
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4

Calculus problem with Summation I think?

  • harry2331
  • · Replies 2 ·
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2

Probability: The birth problem - mean and variance

  • zeion
  • · Replies 1 ·
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1

Proving AD Bisects Angle CAE in Triangle ABC

  • Michael_Light
  • · Replies 3 ·
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3

Help with Geometry Proof: Find CD in terms of AD and BD

  • Maluka8
  • · Replies 5 ·
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5

Guessing alphabet letters with order

  • Cylab
  • · Replies 2 ·
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2

Conditional Probability: probability of having a girl.

  • pearapple
  • · Replies 24 ·
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24

What would the statement of this theorem be?

  • freeofwork
  • · Replies 1 ·
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1

Can tensors be equal in all coordinate systems?

  • qoqosz
  • · Replies 5 ·
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5

Determine if a transformation is linear

  • aero_zeppelin
  • · Replies 4 ·
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4

Sketch graph as function of another

  • geft
  • · Replies 2 ·
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2

Rearranging an equation using log functions

  • Rosstickle
  • · Replies 2 ·
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2

Solving for Point D: How to Find the Intersection of Two Linear Equations

  • hyde2042
  • · Replies 3 ·
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3

Find a basis of U, the subspace of P3

  • Nope
  • · Replies 10 ·
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10

Q function (gaussian random variable)

  • magnifik
  • · Replies 1 ·
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1

Probability of X being greater than Y for independent uniform variables

  • magnifik
  • · Replies 1 ·
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1

Can all quadratic equations be factorised?

  • Kyoma
  • · Replies 2 ·
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2

Can someone please tell me what applied uses surds have in Science?

  • PonderingMick
  • · Replies 2 ·
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2

Sum of a Miscelleneous series.

  • AGNuke
  • · Replies 14 ·
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14

Euclidian geometry: Construct circle trough point on angle bisector where

  • Berrius
  • · Replies 1 ·
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1

Independent random varables with common expectation and variance

  • HotMintea
  • · Replies 2 ·
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2

Is the point P(0,2) in the region bounded below by y=x

  • TyErd
  • · Replies 3 ·
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3

Understanding Phasors and Complex Numbers in Harmonic Functions

  • homad2000
  • · Replies 4 ·
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4

Finding the exact value of sec^2x

  • Bread18
  • · Replies 9 ·
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9

Order preserved Lotto distribution

  • Cylab
  • · Replies 2 ·
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2

What is the relationship between sets and elements in this problem?

  • JulianneK
  • · Replies 1 ·
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1

How do I solve for R in this equation?

  • zgozvrm
  • · Replies 2 ·
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2

Limits of z Approaching i Along Unit Circle |z|=1

  • nickolas2730
  • · Replies 1 ·
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1

Co-Ordinate Geometry - Find P for |PA - PB| is maximum

  • AGNuke
  • · Replies 9 ·
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9

Make x the subject of the equation.

  • rollcast
  • · Replies 3 ·
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3

How do I solve for X in the equation X^(1/3) - 4(X^[-1/3]) = 3?

  • Doubell
  • · Replies 5 ·
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5

What Is the Probability of Getting a Lift Within an Hour?

  • nathangrand
  • · Replies 4 ·
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4

Probability when rolling 6 true dice

  • doublemint
  • · Replies 1 ·
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1

What is the meaning of grade in Trigonometry?

  • Zhuhaolin
  • · Replies 6 ·
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6

Property of exponential functions

  • Tricky557
  • · Replies 4 ·
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4

Winning at KENO: Calculating the Expected Value (E(n))

  • sam_0017
  • · Replies 2 ·
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2

Logarithm Question: Solving for x with Substitution

  • Doubell
  • · Replies 6 ·
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6

Learning Logs: Solving y=.70+.59x

  • Jemal
  • · Replies 5 ·
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5

Solving Square Root Equation: Step-by-Step Guide to Finding Theta

  • chevymechanic
  • · Replies 2 ·
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2

Wave Function in specific range

  • ZedCar
  • · Replies 1 ·
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1

Complex numbers, find (3/(1-i)-(1-i)/2)^40?

  • iamavisitor
  • · Replies 4 ·
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4

Perpendicular distance between two equations? (parallel)

  • Dramacon
  • · Replies 3 ·
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3

Solve Logarithm Math Problem: LOG3(X+3)+LOG3(X-1)=1

  • Doubell
  • · Replies 3 ·
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3

Show that a line is parallel to and below the plane

  • aero_zeppelin
  • · Replies 16 ·
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16

Meaning of mathematic operator

  • songoku
  • · Replies 4 ·
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4

What is the Domain of the f(x)^g(x) Function?

  • karkas
  • · Replies 1 ·
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1

Calculating κ: Find the Value of (√3)^7 + (√3)^5 + (√3)^3 + 42(√3)

  • styxrihocc
  • · Replies 8 ·
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8

Plotting Complex Numbers on an Argand Diagram

  • ZedCar
  • · Replies 2 ·
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2

Using cross product to determine if vectors are parallel

  • aero_zeppelin
  • · Replies 2 ·
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2

How Many Workers and Days to Make 30 Units in 2 Days?

  • Megasundato
  • · Replies 4 ·
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4

Vectors a,b |a+kb|=1 .Show that |a||b|sinx<=b, x:angle of vectors a,b

  • 3.1415926535
  • · Replies 1 ·
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1
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3

(Nevermind) Establish Trig Identity: Sums to Products

  • veganazi
  • · Replies 1 ·
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1

Did I explain this right? Basic absolute value functions

  • SMA_01
  • · Replies 4 ·
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4

Prove every rational number has a never ending decimal view

  • h_bpour
  • · Replies 8 ·
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8

Create a rational function with the following properties

  • Painguy
  • · Replies 1 ·
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1

Why Do Rational Functions Have or Lack Horizontal Asymptotes?

  • Painguy
  • · Replies 5 ·
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5

Kirchhoff's rule and multivariable algebra

  • FiveAlive
  • · Replies 3 ·
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3

Calculating the radius of a planet based on its mass

  • EFileTahi-A
  • · Replies 11 ·
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11
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2

Description of binomial expansion

  • squids
  • · Replies 6 ·
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6

Sum of Getometric Sequence with alternating signs

  • notSomebody
  • · Replies 4 ·
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4

Complex numbers: Understanding solutions to tough problems

  • Hioj
  • · Replies 3 ·
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3

Proving a sum that contains complex numbers

  • homad2000
  • · Replies 2 ·
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2

Proving the Falsehood of y = x + ceiling[x] for All Real Numbers y and x

  • jumbogala
  • · Replies 9 ·
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9

Proving sin^0 (x): Is it 0, x, or Something Else?

  • PhysForumID
  • · Replies 6 ·
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6

Prove that (6^n -1) is always divisible by 5

  • Kaldanis
  • · Replies 18 ·
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18

Vectors: Find magnitude and direction of the changes in velocity

  • srsGreem
  • · Replies 8 ·
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8

Help with logarithmic equations

  • chirumu
  • · Replies 5 ·
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5

Why do i get a stright line in both double and single logarithm paper ?

  • mimi.janson
  • · Replies 15 ·
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15

Understanding the Limit of sqrt(x^2 + 2x -1) + x as x Approaches -infinity

  • BluePhone
  • · Replies 9 ·
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9

Solving Sin(2α)=-8/17 Using Identities

  • LT72884
  • · Replies 32 ·
2
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32

Can You Solve These Rational Equations?

  • anonymous12
  • · Replies 5 ·
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5

Not sure if i should post this here

  • stonecoldgen
  • · Replies 8 ·
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8

Finding Inverse of f(x)=3x+5/x-4

  • bael
  • · Replies 4 ·
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4

Probability of <3 Errors in 10-char Msg

  • magnifik
  • · Replies 2 ·
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2

What is the concept for solving equations with integer parts?

  • mtayab1994
  • · Replies 8 ·
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8

Edit: sorry about the title, it was warped when I pressed Control + z

  • AVReidy
  • · Replies 1 ·
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1

Proving 8 divides 1+2x3^(n-1)+5^n for all n>0

  • mtayab1994
  • · Replies 29 ·
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29

Fundamental theorem of counting

  • Saitama
  • · Replies 21 ·
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21

Is 2.7177117771117777 irrational?

  • JsStewartFan
  • · Replies 5 ·
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5

An ellipse fitting into a notch problem.

  • polishdude20
  • · Replies 1 ·
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1

Prove that the distance between point-line is given by some formula

  • aero_zeppelin
  • · Replies 9 ·
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9

Parallelograms projection on a plain

  • fawk3s
  • · Replies 4 ·
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4

Three colors to paint each side of a square, how many different squares?

  • kaleidoscope
  • · Replies 6 ·
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6

Trigonometry - half angles problems

  • paul18
  • · Replies 3 ·
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3

What Is the Probability of Drawing a Red Then a Green Ball?

  • ChrisBlack
  • · Replies 5 ·
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5

Probability Mass Function/Moment Generating Function

  • tangodirt
  • · Replies 3 ·
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3

Geometry Problem: Finding the Sum of Perpendiculars in an Equilateral Triangle

  • sankalpmittal
  • · Replies 8 ·
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8

Why is There a Problem with the Proof for sin(x/2) = +/- sqrt((1-cos(x))/2)?

  • Uniquebum
  • · Replies 5 ·
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5

Solving an equation with radicals

  • trulyfalse
  • · Replies 2 ·
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2

Having problem solving a limit

  • the_morbidus
  • · Replies 6 ·
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6

First success, sampling without replacement

  • alman9898
  • · Replies 5 ·
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5

What is the Set and Probability of Drawing Coins with Replacement?

  • magnifik
  • · Replies 5 ·
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5

Which Method is Correct for Solving Rational Equations?

  • anonymous12
  • · Replies 3 ·
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3

What formula can be used calculate the distance traveled by a robot

  • november1992
  • · Replies 1 ·
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1

Solve Limit as x→π/8: (cos(2x)-√(2))/(x-π/8)

  • batman2002
  • · Replies 5 ·
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5