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

Geometric Series: Find 3 Numbers for 5 Components

  • Femme_physics
  • · Replies 3 ·
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3

Show how to determine the domain of each of the following functions

  • Kazane
  • · Replies 3 ·
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3

Equation of a line that passes through a point.

  • -Dragoon-
  • · Replies 2 ·
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2

Real World Applications of the (x-y)/(x+y) Equation

  • mathisp64
  • · Replies 2 ·
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2

Vertical Asymptote: Is f Defined at x=1?

  • dkotschessaa
  • · Replies 6 ·
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6

Distance from cartesian coordinates and im going wring somewhere.

  • EMFsmith
  • · Replies 7 ·
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7

Came up with a second personalized proof (is it correct)

  • Miike012
  • · Replies 4 ·
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4

Normal distribution table values

  • aurao2003
  • · Replies 2 ·
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2

Solving Complex Equations Involving a,b,c,p,q,r

  • juantheron
  • · Replies 2 ·
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2

Not understanding trig problem

  • Miike012
  • · Replies 3 ·
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3

Total number of wrong answers permutation

  • zorro
  • · Replies 3 ·
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3

Inequality rational polymonial

  • xzi86
  • · Replies 4 ·
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4

Basic Lin Alg - Angle Between Vectors

  • sunmaz94
  • · Replies 8 ·
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8

Quick solve for X type fraction question.

  • nukeman
  • · Replies 7 ·
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7

Probability that a randomly chosen 3 digit number has exactly 3 factor

  • zorro
  • · Replies 10 ·
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10

Find the intersection of three planes (a line)?

  • lillybeans
  • · Replies 2 ·
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2

Again a logarithmic inequality

  • Saitama
  • · Replies 9 ·
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9

How to do this logarithm proof

  • davedave
  • · Replies 2 ·
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2

Proving sin(90−θ) = cos(θ) and related identities

  • Miike012
  • · Replies 4 ·
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4

Radius of a circle that intersects two points on a right triangle.

  • dgoldman86
  • · Replies 8 ·
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8

Simple X and Y intercept question - Thanks

  • nukeman
  • · Replies 7 ·
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7

Find the equation of a parabola with a given focus and vertex.

  • tsbg8185
  • · Replies 2 ·
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2

Solving a system of three equations using row-echelon form

  • Bogrune
  • · Replies 9 ·
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9

Solving log₃ |3-4x| > 2

  • Saitama
  • · Replies 7 ·
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7
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1

Solving Complex Numbers: How to Find the Angle for Non-Real Numbers

  • zorro
  • · Replies 1 ·
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1

Inverse function of bi-exponential function?

  • f_coco
  • · Replies 3 ·
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3

Graphing calculator picture project with 20+ equation lines

  • caitlyn
  • · Replies 1 ·
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1

Challenge Problem that seems too Easy

  • brtdud7
  • · Replies 3 ·
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3

Simple statistics combinations/permutation problem

  • Gameowner
  • · Replies 6 ·
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6

Nature of roots of an equation

  • zorro
  • · Replies 15 ·
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15

Converting cosine(.9812) to radians two answers

  • thearn
  • · Replies 3 ·
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3
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9

Converting standard form to standard form of an ellipse

  • thearn
  • · Replies 2 ·
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2

Is there a method for the simplex algorithm that avoids cycling?

  • wanderlust.xx
  • · Replies 1 ·
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1

Simple function questions - checking answer.

  • Michael_Light
  • · Replies 5 ·
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5

Solving Esther's Morning Commute Problem

  • maria vega
  • · Replies 4 ·
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4

Trinometry question(prove RHS=LHS)

  • MiNDTRyX
  • · Replies 7 ·
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7

Inntersection of a line and a plane.

  • -Dragoon-
  • · Replies 3 ·
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3

Solve De Moivre's Theorem for z^10

  • jwxie
  • · Replies 6 ·
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6
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7

Probability of Sum of Dice Rolls 10-15 Inclusive

  • theloathedone
  • · Replies 6 ·
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6

Solving the Quintic Equation x^5+ax+b

  • footmath
  • · Replies 12 ·
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12

Changes to log4x graph and solving log3x + log3(x+2) = 1

  • Buddah
  • · Replies 3 ·
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3

Finding the Center and Radius of a Sphere with Parallel Tangent Planes

  • math12345
  • · Replies 1 ·
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1

How Does Quadrant Affect Values in Trigonometric Functions?

  • CrossFit415
  • · Replies 2 ·
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2

Are (-5+12√3)/26 and (12-5√3)/26 equal?

  • CrossFit415
  • · Replies 1 ·
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1

Which quadrant does theta lie?

  • CrossFit415
  • · Replies 4 ·
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4

Finding p and q when a parabola crosses the x-axis at -0.5 and 2

  • Peter G.
  • · Replies 7 ·
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7

Understanding 1/f(x) of Graphs with No Equation

  • ProPM
  • · Replies 9 ·
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9

Set builder notation question.

  • Jim01
  • · Replies 1 ·
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1

Suspension Bridge Parabola Problem

  • lenial
  • · Replies 8 ·
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8

Wire Cutting Problem - Finding the Length of a Square

  • Peter G.
  • · Replies 5 ·
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5

Find the range of this function

  • Michael_Light
  • · Replies 3 ·
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3

Calculating the Limit of an Infinite Series

  • kayron
  • · Replies 3 ·
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3

Find nth term and sum for series a + (a+d) + (a+3d) + (a+6d) +

  • homad2000
  • · Replies 9 ·
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9
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9

Geometrical shapes with an unknown

  • Femme_physics
  • · Replies 2 ·
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2

Sum of Angle A and B: Does Proportion Matter?

  • Miike012
  • · Replies 5 ·
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5

Why Does My Range for a Composite Function Differ from the Textbook's?

  • Peter G.
  • · Replies 5 ·
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5
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1

Value of 3 reciprocal trigonometric ratios

  • ohhnana
  • · Replies 2 ·
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2

Possible Values of Angle in Standard Position

  • ohhnana
  • · Replies 2 ·
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2

What is the exact value of sin when cos x =1/√10?

  • ohhnana
  • · Replies 3 ·
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3

Why use sum and difference formulas instead of a calculator

  • Miike012
  • · Replies 10 ·
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10

Simplex algorithm - phase one - why do I need to use it here?

  • wanderlust.xx
  • · Replies 3 ·
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3

Understanding Angle Proofs: How to Identify and Solve for Equal Angles

  • Miike012
  • · Replies 2 ·
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2

Solving Exponential Equations: 2 Problems with Multiple Solutions

  • EternityMech
  • · Replies 2 ·
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2
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2

How to rearrange formulas to isolate a variable

  • supernova1203
  • · Replies 1 ·
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1

Solving problem in Banesh Hoffmann's Vectors

  • james snail
  • · Replies 4 ·
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4

Solving 9^x - 5·3^x + 6 = 0

  • EternityMech
  • · Replies 1 ·
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1

Calculate the height Trigonometry

  • Peter G.
  • · Replies 7 ·
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7

Solving for U and V in a system with Laplace transforms

  • CarbonWater
  • · Replies 1 ·
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1

Solving 2x + 2y = 10 and (2x)² + (2y)² = 68

  • DrummingAtom
  • · Replies 4 ·
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4

Why Do Negative Angles Have Opposite Trig Identities?

  • Miike012
  • · Replies 1 ·
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1

What Does (1+√3i)^n + (1-√3i)^n Equal for Certain n?

  • zorro
  • · Replies 11 ·
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11

How can I simplify this derivative?

  • DespicableMe
  • · Replies 4 ·
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4

Is Starting With Assumption of Truth A Valid Proof Strategy?

  • Mentallic
  • · Replies 3 ·
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3

How to Solve Algebra Problems Involving Variables and Equations?

  • Cyrilshark
  • · Replies 3 ·
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3

Absolute Equation: Solving for x with 2(2)^0.5 and (5)^0.5

  • EternityMech
  • · Replies 2 ·
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2

What Is the Equation for a Tangent Line Parallel to a Given Line?

  • DespicableMe
  • · Replies 1 ·
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1

Checking operations over a set

  • IKonquer
  • · Replies 5 ·
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5

Proving Non-Negative Numbers in a^2+b^2=1

  • armolinasf
  • · Replies 1 ·
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1

Bayes theorem with ball draws and probability of call duration

  • Maybe_Memorie
  • · Replies 15 ·
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15

Solving for theta when sin 2θ = 0.96

  • Nano-Passion
  • · Replies 21 ·
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21

Simplifying cos⁴x + 2cos²x sin²x + sin⁴x

  • Titandwedebil
  • · Replies 6 ·
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6

Standard deviation from grades distribution how am I wrong?

  • Femme_physics
  • · Replies 7 ·
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7

Solving Parametric Equations: Cartesian Equations from Parametric Equations

  • Michael_Light
  • · Replies 4 ·
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4

Proving 2+7+12+17+...+(5n-3)=(n/2)(5n-1) by induction

  • Phyzwizz
  • · Replies 5 ·
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5

Finding the Missing Number in Geometric Series

  • Femme_physics
  • · Replies 12 ·
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12

Finding the Value of Σk=0k=7a2k from a Multinomial Expansion

  • zorro
  • · Replies 2 ·
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2

Sum of fourth powers of the roots of x³+x+1=0

  • zorro
  • · Replies 2 ·
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2
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1

What Is the Probability That the Least Number Drawn Is 5?

  • zorro
  • · Replies 3 ·
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3

When to use LCM vs the fraction subtraction formula?

  • Amaz1ng
  • · Replies 13 ·
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13
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5

Understanding Vectors: Parallelogram PQRS Question

  • recoil33
  • · Replies 2 ·
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2

How do sine, cosine and tangent work on the unit circle?

  • Peter G.
  • · Replies 2 ·
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2

Absolute value appears on both sides of equals sign

  • ECHOSIDE
  • · Replies 5 ·
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5