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

Find the cross-sectional area of a gutter

  • LordofDirT
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4

Simplifying Expression to tan $\frac{\alpha}{2}$

  • ritwik06
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5

Determining Onto for f: Z x Z -> Z

  • lipun4u
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6

Determinant of rotation matrices

  • loom91
  • · Replies 9 ·
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9

Solve Trigonometric Ratios: 2ab/(b^2 - a^2)

  • ritwik06
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2

What is the solution to this natural logarithm homework problem?

  • heyman123
  • · Replies 14 ·
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14

Using Trigonometry to Find Distance from a Flagpole on a Hill

  • LordofDirT
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5

Confidence Interval and Chi-square

  • iza-bella
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1

Functions and Relations: How to Perform Operations on Functions?

  • evilreaper
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2

Struggling with the concept of Arithmetic/Geometric Progression help

  • Carvanara
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5

Solve 2x + y + y' x = 3y^2 y', why is this wrong?

  • Ry122
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4

Vector Algebra: Proving Mutually Perpendicular Vectors

  • physixguru
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4

Finding the Area of Triangles with Adjoining Sides and Angles

  • H.M. Murdock
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5

How to find the Key Point and Asymptote

  • sollinton
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1

Statistical use of the normal distribution problems

  • Paulo2014
  • · Replies 5 ·
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5

Describe each plane, 8x-5y=-40z

  • paralian
  • · Replies 7 ·
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7

Inverse Image of Ideal in R is an Ideal of S

  • norajill
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2

Function negative for all values of x

  • Lilkaze
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2

Statistics - normal distribution

  • logaw
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5

Proof of $\sum_{k=0}^{n} \frac{k}{2^{k}}$ Equation

  • Moridin
  • · Replies 7 ·
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7

Logical question (no variations, permutations or combinations)

  • Physicsissuef
  • · Replies 4 ·
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4

Half-Wave Design: Find Sine Function y=asin(b(x-c))+d

  • temaire
  • · Replies 2 ·
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2

Conics Problem Part 3: Equations and Solutions | Homework Statement

  • temaire
  • · Replies 7 ·
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7

Find circle passing through two points and center lying on a line

  • petuniac
  • · Replies 3 ·
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3

Conics Problem Part 5: Homework Statement & Equations

  • temaire
  • · Replies 2 ·
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2

Conics Problem Part 2: Formulas and Solutions | Homework Statement

  • temaire
  • · Replies 2 ·
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2

Solve Conics Problems: Homework Statement for Part 4

  • temaire
  • · Replies 1 ·
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1

Checking Your Homework: Solving the Equation in the Picture

  • temaire
  • · Replies 1 ·
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1

Snowball Shape Debate: Circle vs Sphere

  • Asian Girl
  • · Replies 7 ·
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7

Am I crazy, or does 11pi/4 lie in quadrant 3?

  • LordofDirT
  • · Replies 3 ·
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3

Proving Sigma Notation Equals Zero

  • bob1182006
  • · Replies 4 ·
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4

Finding Marginal Probability Mass Functions for Random Variables X and Y

  • steven10137
  • · Replies 4 ·
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4

Line Parallel to the Plane Equation (Final Exam Review)

  • NastyAccident
  • · Replies 2 ·
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2

Expanding a Fraction with Denominator 2 | Homework Solution

  • Physicsissuef
  • · Replies 2 ·
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2

Probability : joint density function of 3 Normal Distributions

  • kkirtac
  • · Replies 3 ·
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3

Finding Inverse for (x+2)^2(x-3)

  • wegnes
  • · Replies 3 ·
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3

Solving Natural Logarithmic Equations

  • Rossinole
  • · Replies 5 ·
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5
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6

Probability question on bank customers

  • aaa59
  • · Replies 6 ·
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6

Can Fuzzy Logic Effectively Control Air Flow?

  • norajill
  • · Replies 2 ·
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2

Calculating Red Marble Percentage in Combined Bags

  • LocationX
  • · Replies 7 ·
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7

How to rearrange this equation for o

  • peter456
  • · Replies 3 ·
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3

How to show this statement by induction

  • Moridin
  • · Replies 14 ·
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14

How to Calculate Relative Velocity in Wind for a Plane and Cyclist?

  • Zoheb Imran
  • · Replies 5 ·
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5

Discovering the Maximum Value of a Quadratic Equation

  • 3.141592654
  • · Replies 5 ·
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5

Trigonometry: find minum of y=Tan(x)^p+Cot(x)^q

  • hadi amiri 4
  • · Replies 1 ·
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1
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7

How Does a Complex Number Represent a Circle in an Argand Diagram?

  • rock.freak667
  • · Replies 13 ·
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13

Need quick help with these perms/coms questionscheck answers

  • rock.freak667
  • · Replies 2 ·
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2

What is the solution to this math homework challenge?

  • hadi amiri 4
  • · Replies 12 ·
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12

Math Struggles: Geometric Series & Paying Off a $200 Balance

  • Calixto
  • · Replies 3 ·
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3

Calculate the Sum: $\sum_{k=1}^{10} 3 \cdot 2^{k}$

  • Moridin
  • · Replies 11 ·
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11
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18

Solving Simple Inequality: \frac {2}{x} < 3

  • razored
  • · Replies 4 ·
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4

Find all values of x which satisfy the inequality

  • Petkovsky
  • · Replies 4 ·
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4

Solved Epsilon-Delta Proof: Is it Coherent?

  • razored
  • · Replies 10 ·
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10

Deriving the Work-Energy Theorem: A Calculus Refresher

  • nothing123
  • · Replies 3 ·
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3

Stats: finding probability in normal distribution

  • yellowduck
  • · Replies 2 ·
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2

Find a relationship between 1:n

  • c0mrade
  • · Replies 4 ·
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4

Simplifying a trigonometric expression

  • Petkovsky
  • · Replies 6 ·
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6

Find the equation for a parabola given 3 points

  • Doodledawg
  • · Replies 10 ·
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10

What is the origin of the binomial coefficient formula equality?

  • Physicsissuef
  • · Replies 5 ·
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5

Solving Geometric Sequences: Finding Time to Pay Off Mortgage

  • seboastien
  • · Replies 6 ·
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6

How Can I Use Delta and Epsilon to Understand Limits in Calculus?

  • razored
  • · Replies 4 ·
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4

Is it okay to divide by variables in calculus?

  • razored
  • · Replies 4 ·
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4

Finding Multiples & Factors of 180 & 6

  • Petkovsky
  • · Replies 7 ·
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7

Probability of At Least One Non-Defective Bulb Selected from Company's Stock

  • Amith2006
  • · Replies 6 ·
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6

Expected value and probability

  • yevi
  • · Replies 7 ·
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7

Prove f(x)=g(x) - Essentials of Calculus p.45, Problem 11

  • razored
  • · Replies 7 ·
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7

Deriving Equations of a Parabola

  • PFStudent
  • · Replies 3 ·
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3

Can You Solve This Math Riddle Involving Positive Numbers?

  • Paulo2014
  • · Replies 7 ·
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7

Calculate Area Difference of Triangles ABC with AB=5cm, AC=3.2cm

  • seboastien
  • · Replies 21 ·
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21

Efficiently Computing x in 18sinxcosx=1-6sinx Equation

  • O garcia
  • · Replies 8 ·
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8

Solve f(x): Find Attracting Interval w/ Gradient Criterion

  • feely
  • · Replies 3 ·
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3

Permutatuon question help PLEASE

  • babacanoosh
  • · Replies 10 ·
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10

Graphing polar curves: limacon and 2 oddballs

  • rocomath
  • · Replies 1 ·
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1

How to Solve a Trigonometry Exam Problem with tan(5x) = tan(3x)

  • Petkovsky
  • · Replies 16 ·
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16

Find Terry's Running Speed | D=vt Problem Solution

  • petuniac
  • · Replies 6 ·
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6

Find point of intersection of a line and a plane

  • Jatt
  • · Replies 2 ·
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2

Logarithms: ALG2 teacher say what?

  • stephen92
  • · Replies 4 ·
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4

Discriminant Related Question [SOLVED] Discriminant Related Question

  • _Mayday_
  • · Replies 7 ·
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7

Proving Commutativity of Matrices: A + B and (A+B)^2 Equations Validity

  • Physicsissuef
  • · Replies 6 ·
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6

Coordinates of antisymmetric matrix

  • Physicsissuef
  • · Replies 2 ·
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2

How many ways can 25 pieces of varying shapes fit in a square space?

  • paulleonday
  • · Replies 4 ·
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4

How to Calculate Profit on Selling Price?

  • Amith2006
  • · Replies 3 ·
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3

Solving Trigonometric Problems with Multiple Formulas

  • Anony-mouse
  • · Replies 10 ·
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10

Solve Trig Question: tan(2θ) = cot(φ)

  • jesuslovesu
  • · Replies 1 ·
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1

Finding the Final Sum of Trigonometric Functions: Cosine and Sine Formulas

  • Theofilius
  • · Replies 64 ·
3
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64

Equation of Line Projection on Plane - Homework Help

  • Theofilius
  • · Replies 41 ·
2
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41
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2

Unraveling the Mysteries of the Unit Circle

  • anon413
  • · Replies 9 ·
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9

Maximal Ideals in Commutative Rings: Explained and Solved

  • norajill
  • · Replies 2 ·
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2

Calculating Velocity Post-Collision: White Snooker Ball

  • Air
  • · Replies 2 ·
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2

What is an Expression for b in Terms of a?

  • LLS
  • · Replies 10 ·
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10

What Price Should a Grocer Charge for Mixed Rice to Gain 16%?

  • neha1
  • · Replies 4 ·
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4

Calculating Support Forces on Plank at the Airport

  • McArthur
  • · Replies 1 ·
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1

Exponential regression math 30 pure

  • cathoderay
  • · Replies 2 ·
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2

How can I prove properties of complex numbers in my homework?

  • Theofilius
  • · Replies 19 ·
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19

Series Identities: Showing Convergence to cL & X+Y

  • dtl42
  • · Replies 2 ·
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2

Intersection of line and plane

  • Physicsissuef
  • · Replies 2 ·
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2