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

Histogram with # on edge of bin?

  • doubled
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1
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Round off error of floating point number.

  • SherlockOhms
  • · Replies 17 ·
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17

How do you determine the range for each bin in a histogram?

  • doubled
  • · Replies 4 ·
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4

Solving inequalities with rational expressions.

  • viet1919
  • · Replies 9 ·
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9

Convert 0.1001(repeating) to Decimal

  • SherlockOhms
  • · Replies 4 ·
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4

Consider a trig function such as: y = A cos (bx - c)

  • majinkenji
  • · Replies 3 ·
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3

Find sin, cos, and tan for a given quadrant angle

  • wittlebittle
  • · Replies 4 ·
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4

Solving (x-y)/xy = z for x

  • Mhorton91
  • · Replies 6 ·
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6

How to Solve a Quadratic Equation Using Factorisation?

  • BOAS
  • · Replies 10 ·
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10

Set theory and baye's theorem problem

  • bdh2991
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3

Dividing 8 cooks among 4 restaurants and pairing them

  • gl0ck
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3

Why is sin(90 - θ) positive in quadrants II, III and IV?

  • jayanthd
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2

Proving Negative Real Numbers Using Contradiction

  • zoxee
  • · Replies 5 ·
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5

Root 2 irrationality proof (geometric)

  • phospho
  • · Replies 1 ·
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1

Solving sqrt(5x² + 11) = x + 5 and finding x restrictions

  • Coco12
  • · Replies 6 ·
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6

Solve Inequalities algebraically

  • Panphobia
  • · Replies 3 ·
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3

Calculating Annual Cost of Running Coffee Makers

  • STEMucator
  • · Replies 8 ·
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8

Proving the Validity of 5y^2 + 5y + 1 in Prime Numbers

  • zoxee
  • · Replies 3 ·
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3

Euclidean geometry: aadvanced rider

  • VictoriaV
  • · Replies 1 ·
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1

Summing sines and cosines with trig.

  • res3210
  • · Replies 3 ·
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3

Properties of Roots in Univariate Polynomial of Degree n

  • knowLittle
  • · Replies 4 ·
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4

Setting up partial fractions for x^4-2x^3+x^2+2x-1 divided by x^2-2x+1

  • Jbreezy
  • · Replies 1 ·
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1

Proof affine function as matrix equation

  • divB
  • · Replies 2 ·
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2

How do I prove n = m³ - m is always a multiple of 6?

  • phospho
  • · Replies 8 ·
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8

Possible Values of the Inequality.

  • NATURE.M
  • · Replies 2 ·
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2

Factoring a quadratic equation to find roots

  • Hierophant
  • · Replies 4 ·
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4

Algebraic Equations with Multiple Variables

  • sammiyahc0
  • · Replies 2 ·
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2

Transforming a function using a parent function

  • SwimmingGoat
  • · Replies 2 ·
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2

Linear Algebra Matrices Problem(s)

  • sheet1
  • · Replies 11 ·
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11

Finding customer purchase counts with three products using Venn diagrams

  • InPhase
  • · Replies 4 ·
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4

Find Particular Set, 0 and n+3 belong to it and are N

  • knowLittle
  • · Replies 21 ·
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21

Formulating min-cost flow for a power grid with undirected edges

  • Yo388
  • · Replies 8 ·
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8

Trigonometry Expansion: Expanding cos(8x) Using sin(2⋅x) or cos(2x)

  • Panphobia
  • · Replies 1 ·
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1

Playing With Logs while solving y-x=5(ln|y+3|-ln|x+4|) for y.

  • gikiian
  • · Replies 1 ·
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1

Setting Up an Advanced Mathematics Equation

  • Medgirl314
  • · Replies 84 ·
3
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84
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15

Quadratic Simultaneous Equation

  • fonz
  • · Replies 3 ·
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3

How can a vector in the yz-plane be perpendicular to a 3D vector?

  • insan
  • · Replies 11 ·
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11

How Do You Calculate Standard Deviation for Linear Combinations?

  • doubled
  • · Replies 1 ·
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1

Chi-square test for webinar enrollment across four communication groups

  • Math Is Hard
  • · Replies 3 ·
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3

Why might a 4th degree polynomial function not have four factors?

  • fakecop
  • · Replies 8 ·
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8

Solving Logarithm Inequality Log x ((x+3)/(x-1)) > Log x x

  • pietersandi_w
  • · Replies 3 ·
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3

Proving trig equations using addition formulae

  • Bonus vir quid
  • · Replies 4 ·
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4

How Do You Distribute a Negative Sign When Squaring in Algebra?

  • Drakkith
  • · Replies 3 ·
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3

Determine number of possible combinations.

  • btbam91
  • · Replies 3 ·
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3

What Are Common Mistakes in Solving Conditional Probability Problems?

  • Woolyabyss
  • · Replies 4 ·
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4

Calculus Word + Linear Problem (2)

  • sheet1
  • · Replies 13 ·
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13

How to Simplify Fractions with Common Factors

  • Drakkith
  • · Replies 8 ·
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8

Question of the basic properties of tan

  • thunderjolt
  • · Replies 3 ·
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3

Area of smaller circle when angle bisector divides 60° angle in cone

  • athena810
  • · Replies 3 ·
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3

Linear Algebra Question (Kronecker Delta?)

  • FeDeX_LaTeX
  • · Replies 8 ·
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8

Problem from discrete math class

  • Miike012
  • · Replies 2 ·
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2

Why 1.1 and 0.95 are not least upper bounds for n/(n+1)

  • NATURE.M
  • · Replies 31 ·
2
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31
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6

Finding The Number of People At A Party

  • Bashyboy
  • · Replies 6 ·
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6

How is the √2 factor used in normalizing Qbit vectors?

  • killinchy
  • · Replies 7 ·
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7

Trigonometric Equation: 2sin(2x) = 2cos(x)

  • GuN
  • · Replies 5 ·
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5

How Do You Prove ∀x(¬R(x) → P(x)) Using Rules of Inference?

  • ParoXsitiC
  • · Replies 6 ·
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6

Solving a Candle Height Problem with Separation of Variables

  • Bashyboy
  • · Replies 6 ·
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6

Why is f(x) = 1 + sin(x) neither odd nor even?

  • adelin
  • · Replies 4 ·
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4

Urn problem with/without replacement

  • Thunderbird88
  • · Replies 3 ·
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3

How Do You Solve Absolute Value Inequalities Involving Fractions?

  • p.ella
  • · Replies 3 ·
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3

Probability one or more statement

  • Mdhiggenz
  • · Replies 1 ·
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1

Solve 3-D Geometry Problem: Find Intersection Line of Bisector Planes

  • Saitama
  • · Replies 4 ·
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4

Finding x and y mentally in a symmetric linear system

  • Bashyboy
  • · Replies 3 ·
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3

Finding f(x) Using Limit and Algebraic Manipulation

  • tg43fly
  • · Replies 35 ·
2
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35

Solving a Trig Question in 3rd Quadrant

  • zaddyzad
  • · Replies 3 ·
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3

Probability of true/false exam

  • Gridvvk
  • · Replies 13 ·
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13

Expanding ln isn't working for me

  • iScience
  • · Replies 3 ·
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3

How to Simplify the Expression (6w2-w-3) + (7w2-4w+5)

  • Drakkith
  • · Replies 2 ·
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2

Can the dot and cross product prove the sum of squares in a parallelogram?

  • leroyjenkens
  • · Replies 6 ·
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6

Finding the formula for summation.

  • NATURE.M
  • · Replies 4 ·
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4

Calculating Probability for Transferred and Selected Balls

  • Thunderbird88
  • · Replies 1 ·
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1

Are the graphs of y = x - 1 and y = (x² - 1)/(x + 1) the same?

  • neuro.akn
  • · Replies 22 ·
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22

Solving ||x² - 4| - 3| < 1

  • AnthonyJohnAre
  • · Replies 2 ·
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2

What is the Point Discontinuity Problem in Rational Functions?

  • neuro.akn
  • · Replies 8 ·
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8

Solving for x in arcsin+arctan=π/2

  • Appleton
  • · Replies 4 ·
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4

When to add and cancel logarithms

  • A.J.710
  • · Replies 1 ·
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1

Limit of (x^3-1)/(x^1/2-1) as x approaches 1

  • tg43fly
  • · Replies 4 ·
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4

Matrices and infinite solutions

  • Ipos Manger
  • · Replies 2 ·
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2

Solving Linear Function: Temperature & Chirp Rate

  • physics604
  • · Replies 3 ·
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3

Solving x/2 in 3rd Quadrant: Cosx=-7/9

  • zaddyzad
  • · Replies 3 ·
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3

Solution of a polynomial with degree 25

  • jonjacson
  • · Replies 10 ·
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10

Trig Right triangle Trigonometry

  • TheKracken
  • · Replies 2 ·
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2

Solve Annuity Word Problem: Debt of $82423.55

  • jackscholar
  • · Replies 4 ·
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4

Solving Modulo Arithmetic Problem with Variable Integer k

  • Mentallic
  • · Replies 5 ·
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5

Proofing A Geometric Statement

  • Bashyboy
  • · Replies 6 ·
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6

Translating discrete math logic statements to first-order formulas

  • Miike012
  • · Replies 1 ·
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1

Evaluating the Difference Quotient

  • robertmatthew
  • · Replies 2 ·
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2

What is the correct equation for pails over time in this algebra problem?

  • Chas3down
  • · Replies 3 ·
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3

Is My Statement Equivalent to the One in the Paint Document?

  • Miike012
  • · Replies 3 ·
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3

Finding limit of sin(x cos x)/cos(x sin x) as x→π/2

  • juantheron
  • · Replies 10 ·
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10

How do e^(2iz) and e^(-2iz) cancel in this expression?

  • leroyjenkens
  • · Replies 7 ·
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7

Finding the Value of S in the Sum Equals Product Problem

  • tony24810
  • · Replies 18 ·
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18

Prove this completely obvious question

  • AGNuke
  • · Replies 4 ·
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4
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1

Finding the Range of a Trig Function with Cauchy-Schwarz

  • Saitama
  • · Replies 8 ·
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8

How to simplify double radical when theres fractions involved?

  • needingtoknow
  • · Replies 1 ·
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1

Rationalizing the denominator involving more than one square root

  • SwimmingGoat
  • · Replies 5 ·
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5