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.
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Coupon Collection Problem Variation
- Master1022
- · Replies 8 ·
How do you solve cos(α+θ)=0 for different values of α?
- PainterGuy
- · Replies 21 ·
Four equations for gravitational acceleration from kinematic formulas
- Huzaifa
- · Replies 5 ·
Find the domain of the inverse of a function
- chwala
- · Replies 3 ·
Find the coordinates of a point C from the given line, point and circle
- Mathman2013
- · Replies 8 ·
Sinusoidal function for Niagara Falls Skywheel: phase shift and sine vs cosine
- Evangeline101
- · Replies 25 ·
Combinatorics: Seating Problem
- Master1022
- · Replies 5 ·
Express log₆ 3 in terms of m and n
- songoku
- · Replies 4 ·
Distance from a point on a circle to an arbitrary axis
- Slipjoints
- · Replies 6 ·
Find the HCF of the numbers A and B
- chwala
- · Replies 15 ·
Sketching f(x) = 1/28(7√−16x^2 + 16x + 5 + 12) as part of a circle
- kvilv113
- · Replies 9 ·
What Is the Other Number If HCF Is 33 and LCM Is 264?
- chwala
- · Replies 7 ·
Problem involving different numbers of apple, banana and mango trees
- chwala
- · Replies 4 ·
Solving the Equation ##10ax+bx=22x##
- chwala
- · Replies 3 ·
Find the LCM of the following numbers
- chwala
- · Replies 4 ·
Finding dimensions of a triangle-topped rectangle structure
- hackedagainanda
- · Replies 23 ·
Game theory: competitive auction for the money in a chest
- Master1022
- · Replies 2 ·
Find the angular velocity of this linkage
- Noob of the Maths
- · Replies 8 ·
Probability: Dice Game between 20- and 12-sided dice with re-rolls
- Master1022
- · Replies 2 ·
Calculating nth Term of Sequences: What Now?
- BerriesAndCream
- · Replies 2 ·
Intersection of two line segments from uniform distribution
- Master1022
- · Replies 17 ·
How can we interpret the inverse matrix of a robot's arm?
- Poetria
- · Replies 4 ·
Why do my two methods give different imaginary roots?
- hackedagainanda
- · Replies 3 ·
Game theory: dice game to aim for sum no greater than 9
- Master1022
- · Replies 11 ·
Finding the transformation of a matrix
- Redwaves
- · Replies 31 ·
Bayes Theorem: coin flips and posterior predictive distribution
- Master1022
- · Replies 4 ·
Combinatorics: calculating Oz Lotto odds for divisions
- Darkmisc
- · Replies 2 ·
Probability of 1 Letter E in 4 Randomly Selected Letters from 'ENCYCLOPAEDIA
- Darkmisc
- · Replies 1 ·
Matching couples at a party (mean and variance)
- Master1022
- · Replies 14 ·
Find the ratio of men to women
- chwala
- · Replies 1 ·
Adding two sinusoidal waves of same frequency but out of phase
- souky101
- · Replies 4 ·
Finding 2×2 orthogonal matrices with specific properties
- Poetria
- · Replies 10 ·
Dice Game: 6-sided die vs 20-sided die
- Master1022
- · Replies 53 ·
Proof by contradiction - any non-zero number divided by itself is 1
- musicgold
- · Replies 18 ·
Combinatorics: Counting quadrilaterals in triangle pattern
- Master1022
- · Replies 2 ·
Basic coin toss problem to get 1 head, but with a different method
- Master1022
- · Replies 2 ·
Proof: Multiplication is commutative
- HMPARTICLE
- · Replies 10 ·
Multiplication -- prove this one by induction
- rb120134
- · Replies 5 ·
Finding roots and complex roots of a determinant
- Redwaves
- · Replies 5 ·
Matrix Function - Check Understanding
- Poetria
- · Replies 7 ·
How to calculate the probability of winning top prize of lottery?
- kenny1999
- · Replies 1 ·
Find vector ##x## and ##y## by considering the vector diagram
- chwala
- · Replies 5 ·
Conditional probability and criminal DNA analysis
- Moara
- · Replies 1 ·
Observation of events and analysis of the associated Hypotheses
- Moara
- · Replies 8 ·
Why it doesn't sum to one in this simple naive Bayes classification?
- Karagoz
- · Replies 2 ·
Cambridge Interview Question (pet peeve + demo)
- Simon Bridge
- · Replies 1 ·
Area of interior triangle of pyramid normal to a side length
- member 428835
- · Replies 3 ·
Simplifying radical expressions with fractional exponents
- hackedagainanda
- · Replies 6 ·
Solve the problem in the given cyclic quadrilateral
- chwala
- · Replies 23 ·
Bound correlation coefficient for three random variables
- Master1022
- · Replies 3 ·
Probability of Getting 1 Jack when taking 5 cards from a deck
- Master1022
- · Replies 5 ·
Number of Die Throws until you get a repeated number
- Master1022
- · Replies 34 ·
Non-injective function with f^(-1)(f(X)) = X
- Eclair_de_XII
- · Replies 10 ·
Rearrangements of ABRACADABRA avoiding CDR as substring
- Darkmisc
- · Replies 23 ·
Software for finding functions
- Einstein44
- · Replies 19 ·
Determine which functions are rational
- chwala
- · Replies 2 ·
Prove an equation involving inverse circular functions
- brotherbobby
- · Replies 6 ·
Finding elements of {6a + 2b} for integers a and b
- Math100
- · Replies 31 ·
Vector decomposition - gravity
- Poetria
- · Replies 20 ·
Limit calculation involving log and trig functions
- kshitij
- · Replies 6 ·
Checking if a set notation answer is correct
- Math100
- · Replies 7 ·
Identifying elements in the set from a given condition
- Math100
- · Replies 6 ·
Equation for a line through an origin
- Poetria
- · Replies 4 ·
Finding the elements of these sets
- Math100
- · Replies 10 ·
Is the curve r = tan(t) defined at t = 0?
- Eclair_de_XII
- · Replies 23 ·
Checking set notation answers
- Math100
- · Replies 11 ·
What is the correct interpretation of the standard error of the sample mean?
- Addez123
- · Replies 14 ·
Combinatorics and set cardinality
- RM86Z
- · Replies 23 ·
How to interpret the Standard Error in this experiment?
- musicgold
- · Replies 1 ·
Counting nine-letter rearrangements of FULBRIGHT containing GRIT
- RM86Z
- · Replies 2 ·
Compute the number of positive integer divisors of 10
- RM86Z
- · Replies 2 ·
Prove that if n^2 is a multiple of 2, then n is multiple of 2
- songoku
- · Replies 23 ·
Expected value question -- Probabilities when tossing two coins
- RM86Z
- · Replies 4 ·
I want to interpolate two values in Excel
- steven757
- · Replies 4 ·
Determine whether the given function is odd or even
- chwala
- · Replies 10 ·
What is the proof for the rare trig identity with tan/tan = other/other?
- Blanchdog
- · Replies 17 ·
Prove rational fractions equal without using a constant multiplier k
- brotherbobby
- · Replies 5 ·
How to simplify an iterated trigonometric expression
- Leo Liu
- · Replies 6 ·
Solving 4cos(2x) = 8sin(x)cos(x) using identities
- Vol
- · Replies 9 ·
How Old is John Now Based on Past and Future Age Calculations?
- harpazo
- · Replies 11 ·
How do I set up the correct equations for this age word problem?
- harpazo
- · Replies 11 ·
What is the Linear Equation for Dollar Value of a Product Over Time?
- nycmathguy
- · Replies 22 ·
Two Age Word Problems: Solving for Current Age and Future Age
- harpazo
- · Replies 2 ·
Age Word Problem Involving Ratio
- harpazo
- · Replies 10 ·
How Old Is Tanya in This Age Problem?
- harpazo
- · Replies 12 ·
How Do You Set Up an Equation for the Ages of John, Peter, and Alice?
- harpazo
- · Replies 29 ·
Proving Roots: Formula for Solving Quadratic Equations
- lilyhachi
- · Replies 5 ·
Finding Martin and Luther's present ages
- harpazo
- · Replies 16 ·
Working with Perpendicular Segments
- nycmathguy
- · Replies 13 ·
Determine which set is a function
- nycmathguy
- · Replies 3 ·
Write a Linear Model For this Data
- nycmathguy
- · Replies 6 ·
How can I efficiently type mathematical equations without a computer or laptop?
- nycmathguy
- · Replies 7 ·
What is the difference between an implicit and explicit domain in a function?
- nycmathguy
- · Replies 1 ·
How many combinations? (High school math problem)
- YouAreAwesome
- · Replies 20 ·
Discrete data vs continous data in statistics
- chwala
- · Replies 9 ·
Write a Linear Equation for the Value of this Printer Over Time
- nycmathguy
- · Replies 8 ·
Testing symmetry of y = x^4 - x^2 + 3 for axes and origin
- nycmathguy
- · Replies 2 ·
Checking x - y² = 0 for symmetry about axes and origin
- nycmathguy
- · Replies 24 ·
Simplify An Expression Containing Absolute Values
- nycmathguy
- · Replies 9 ·
Write A Linear Equation for Monthly Salary + Commission
- nycmathguy
- · Replies 6 ·