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
Probability problem -- Drawing cards with different colors on their 2 sides
- TheMathNoob
- · Replies 5 ·
How Many 5-Digit Numbers from 4, 5, 6, 8, 9 are Divisible by 8?
- Matejxx1
- · Replies 4 ·
Complex Number Division and Addition
- Sirsh
- · Replies 3 ·
Finding direction cosines of the plane 4x+5y+7z=13
- Rahul Manavalan
- · Replies 3 ·
True or false: four statements with existential and universal quantifiers
- lep11
- · Replies 9 ·
Proof concerning similar triangles and their ratios
- moriheru
- · Replies 3 ·
Interesting Probability problem and maybe binomial theorem
- whitejac
- · Replies 5 ·
Proof: Max number of Linearly Independent Vectors
- #-Riley-#
- · Replies 2 ·
Area of a triangle (cross product lesson)
- Lebombo
- · Replies 3 ·
Multiplication rule for conditional probabilities
- TheMathNoob
- · Replies 3 ·
Trigonometry: Proof concerning congruent triangles
- moriheru
- · Replies 7 ·
Prove tan(x/2) = (1-cos(x))/sin(x)
- Rectifier
- · Replies 9 ·
Finding the range of f and g without differentiation
- WeiLoong
- · Replies 4 ·
How do I Solve for A in Partial Fraction Expansion?
- mathnovice
- · Replies 8 ·
Area of A Segmented Circle Cut By A Chord
- TAMUwbEE
- · Replies 7 ·
Combinatorics practice: counting representatives and objects
- WanderingMind
- · Replies 10 ·
What Is the Probability of Distributing Spades Among Players in a Card Game?
- whitejac
- · Replies 16 ·
Proving volume of box using cross and dot product
- PAstudent
- · Replies 7 ·
When is -x^-4 equal to (-x)^-4?
- pandamonium786
- · Replies 6 ·
Evaluating 6^1 + 6^-1 / 6^1 - 6^-1
- pandamonium786
- · Replies 5 ·
Which is greater: 20^100 or 400^40?
- pandamonium786
- · Replies 19 ·
Algebra problem involving square roots
- Kevin Licer
- · Replies 14 ·
Is the Growth of Branches on a Maple Tree Exponential or Polynomial?
- caters
- · Replies 5 ·
Where would you sit in the bus ?
- #neutrino
- · Replies 2 ·
Sphere with radius 7 tangent to xy-plane with center on z-axis
- MidgetDwarf
- · Replies 7 ·
Right triangle with sides x+2, 5x-3, and hypotenuse 4x+1
- richardz03
- · Replies 4 ·
The roots of x^8 - 5x^6 + 7x^4 - 5x^2 +6=0
- mathnovice
- · Replies 5 ·
Explanation about conditional probability
- TheMathNoob
- · Replies 3 ·
Simultaneous Equations (How to test for redundancy)
- miniradman
- · Replies 3 ·
How Many Families Subscribe to Exactly One Newspaper?
- TheMathNoob
- · Replies 9 ·
What is the frequency of the sum of several sine waves?
- sherled
- · Replies 1 ·
Simplifying a complex fraction with variables
- caters
- · Replies 15 ·
The Matching Problem (probability)
- TheMathNoob
- · Replies 5 ·
Critical Path PERT - Time to Complete a Task
- Rosebud
- · Replies 5 ·
Dot Products With Orthogonal Vectors
- ME_123
- · Replies 4 ·
When is following equation true?
- Rectifier
- · Replies 11 ·
How can I improve my ability to catch mistakes in math problems?
- TheMathNoob
- · Replies 6 ·
Can I use root-sum-square for this sort of problem?
- ehilge
- · Replies 2 ·
Calculate sin75 without calculator
- Robin04
- · Replies 7 ·
[Euclidean Geometry] Kiselev's Plainimetry Question 242
- modularmonads
- · Replies 5 ·
Determinant with rows of 1s and a, b, c values
- VoteSaxon
- · Replies 11 ·
Calculating Distance and Time for Meeting at Constant Velocities
- Manh
- · Replies 17 ·
Typo in an example (Probability)
- TheMathNoob
- · Replies 8 ·
Simple probability question that I want to have work checked
- thepatient
- · Replies 3 ·
Find the next element in the list
- Johnx014
- · Replies 10 ·
Finding two functions with the same range but different domains
- BruceW~
- · Replies 5 ·
Finding the Solution to the Equation 2^x = 12 + 4x
- WeiLoong
- · Replies 7 ·
Construct a function given two asymptotes
- Rectifier
- · Replies 10 ·
Is there a formula for converting binary numbers to an ordered pair output?
- Davega Putra
- · Replies 13 ·
Estimation example from Giancoli
- EvD
- · Replies 2 ·
What Is the Correct Symbolic Form and Truth Table for ~(p|q)?
- SmokeyMTNJim
- · Replies 6 ·
Proving Triangle Side Lengths Using Congruence and Similarity
- rushil_p
- · Replies 5 ·
Probability of forming an increasing Geometric Progression
- Titan97
- · Replies 12 ·
How to work out expected frequency from normal distribution
- question dude
- · Replies 1 ·
Optimal Garden Shape for Minimizing Fencing
- ducmod
- · Replies 24 ·
Why Does \(\ln \frac{(x+1)}{(x-1)} \geq 0\) Imply \(x > 1\)?
- Cosmophile
- · Replies 13 ·
Given isosceles triangle, find sin (A-C)
- terryds
- · Replies 12 ·
Finding a and b in y=sin(ax-b) given three zero crossings
- adjacent
- · Replies 5 ·
Board feet in a log with 34 cm diameter and 3 m length
- youngstudent16
- · Replies 7 ·
Proving rules for sums of numbers in rows
- diredragon
- · Replies 19 ·
Find the smallest positive integer
- youngstudent16
- · Replies 15 ·
Simplify x^(n-1)⋅³√(y^2/2x^5) into Rationalised Surd Form
- Bill_Nye_Fan
- · Replies 2 ·
How Do You Calculate Bicarbonate Levels in Respiratory Disorders?
- cbrons
- · Replies 2 ·
Finding f(x²-2) given f(x²+2)=x⁴+10x²+4
- Dapperdub
- · Replies 7 ·
A system of equations that I want to do with a matrix
- youngstudent16
- · Replies 6 ·
Expressing Matrix Power as linear combination
- SteliosVas
- · Replies 7 ·
How Do Coordinate Transformations Work Between Different Systems?
- diredragon
- · Replies 20 ·
If p(a) = p(b) = q, is p(a∩b) ≤ q²?
- rangatudugala
- · Replies 20 ·
{Combinatorics} Finding the number of triangles in a plane
- youngstudent16
- · Replies 8 ·
Word problem on finding speed based on time, distance
- ducmod
- · Replies 7 ·
{Number Theory} Smallest integer solution
- youngstudent16
- · Replies 5 ·
{Number theory} Integer solutions
- youngstudent16
- · Replies 4 ·
Proving p(ab) ≤ p² when p(a)=p(b)=p
- rangatudugala
- · Replies 40 ·
Probability and standard deviation Question
- Potatochip911
- · Replies 2 ·
How to prove that (log logn)×(log log log n) = Ω(logn)
- 22990atinesh
- · Replies 1 ·
How do I parameterize the intersection of these two surfaces?
- slr77
- · Replies 6 ·
Sin^4Ө =3/8-3/8cos(2Ө) Prove the following trigonometric identity
- bubbly616
- · Replies 6 ·
Probability of Duplicate Identifiers in a Set of Components
- DaanV
- · Replies 7 ·
R^2=9cos(3Ө) Convert to rectangular cordinates
- bubbly616
- · Replies 3 ·
Block on rotating cylinder: are these velocity expressions equivalent?
- Quadrat
- · Replies 4 ·
Repeated and conditional probability question
- erisedk
- · Replies 10 ·
Calculating the Magnitude of U + V + W
- mattyk
- · Replies 2 ·
Working out how many ducks there are
- discosucks
- · Replies 6 ·
Probability problem -- Number of throws of a pair of dice to get a 7
- erisedk
- · Replies 5 ·
Is x² + 16 a prime polynomial over the reals?
- JR Sauerland
- · Replies 5 ·
What Is the Probability a Student Doesn't Get an A on Either Exam?
- Potatochip911
- · Replies 15 ·
Area of Triangle ABC: Find Solution
- youngstudent16
- · Replies 2 ·
Finding the period of f(x+1)+f(x-1)=√2·f(x)
- Titan97
- · Replies 2 ·
Simplify each of this following surd
- jonathan22
- · Replies 6 ·
Prove that sum of floor(ra/b) equals (a-1)(b-1)/2
- Titan97
- · Replies 5 ·
Prove Set Identity: A⋂(B⊕C)=(A⋂B)⊕(A⋂C)
- 22990atinesh
- · Replies 2 ·
Square root function: x intercept paradox?
- Dapperdub
- · Replies 5 ·
Symmetry about x-axis, y-axis or origin
- jaysquestions
- · Replies 16 ·
Finding AD using cosine rule with two solutions
- Rectifier
- · Replies 20 ·
Create a polynomial with desired characteristics, factoring
- ducmod
- · Replies 3 ·
How to find a point of intersection of two planes?
- Andrew Pierce
- · Replies 10 ·
Aren't there infinitely many primes?
- PcumP_Ravenclaw
- · Replies 7 ·
Chance of winning in a spin-off of the game "Black Jack"
- Nathanael
- · Replies 12 ·
Can the minimum value of x + 1/x ever be less than 1 on x > 0?
- Rectifier
- · Replies 9 ·