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
Counting watch and sunglasses combinations with constraints
- baywatch123
- · Replies 9 ·
Why can't I use Pr(A∩B)=Pr(A)*Pr(B) for this probability problem?
- Luscinia
- · Replies 9 ·
3-digit numbers from digits 0-7 with permutation restrictions
- teetar
- · Replies 9 ·
Finding the co-ordinates of the 3rd point of a triangle given this?
- supremeruler
- · Replies 10 ·
Flipping Functions: Determining Vertical/Horizontal Flips
- soulmartyr
- · Replies 6 ·
How many ways can you roll a four of a kind and a two of a kind with 6 dice?
- SYoungblood
- · Replies 8 ·
Proof of trig identity (difficult)
- Amad27
- · Replies 22 ·
Proving trig identities with sec²x and csc x
- Confusedbrah
- · Replies 4 ·
Why is the range of ø in spherical coordinates limited to 0 to π?
- Modest Learner
- · Replies 12 ·
How does constant percent rate of change apply to exponential expressions?
- kevinshen18
- · Replies 3 ·
What is the solution for Ry in Sin 0=Ry/Rx when given values for Rx and theta?
- niknak98
- · Replies 3 ·
How to solve an exponential equation
- Mr Davis 97
- · Replies 5 ·
Images of lines under translation and rotation transformations
- carojay
- · Replies 4 ·
How to Analyze Correlation Between Variables
- daneault23
- · Replies 9 ·
Proving ∠D=90°-(∠A/2) in Triangle ABC with Bisectors
- Govind_Balaji
- · Replies 8 ·
Find x,y,z in Sequence: 33, ?,?,?,88
- adjacent
- · Replies 4 ·
Solve "Find the Equation of the Line with Gradient 3/4 Passing Through (7,11)
- tinybang
- · Replies 2 ·
Why can't I just square both sides and get the solution?
- Dinheiro
- · Replies 9 ·
Radical with negative radicand squared
- OceanSpring
- · Replies 4 ·
How to Prove a Complex Inequality with Complex Algebra
- Dinheiro
- · Replies 1 ·
Calculating Euler's Totient Function for Large Numbers: Is There a Better Way?
- Dinheiro
- · Replies 6 ·
Just a complex Complex product
- Dinheiro
- · Replies 6 ·
Proving a parabola reflects light to its focus
- adjacent
- · Replies 15 ·
Finding all solutions to z²=a+bi using De Moivre's formula
- kat1812
- · Replies 3 ·
Finding intersections and reparametrizing a 3D line
- lpbg
- · Replies 1 ·
What is the Formula for an Arithmetic Series with Odd Numbers?
- Maxo
- · Replies 10 ·
Interest Theory- Annuity Withdrawals
- uestions
- · Replies 1 ·
Solving Anova Table? (stats problem)
- zoiberg137
- · Replies 3 ·
Finding the intersect of two functions
- stevemilw
- · Replies 7 ·
Rewriting a trigonometric sum using product-to-sum formula
- needingtoknow
- · Replies 1 ·
How to factor (2x^2 + ax - 2a - 8)?
- needingtoknow
- · Replies 2 ·
Summation vs integration for 5/√x with discrete steps
- bobie
- · Replies 7 ·
Interesting Problem from Gelfand's Algebra; Relevance?
- Axel Harper
- · Replies 4 ·
A problem with a septimal system.
- usermath
- · Replies 5 ·
(Serbia) Just squaring won't work
- Dinheiro
- · Replies 18 ·
Can You Find the Real Solutions to This Radical Equation?
- Dinheiro
- · Replies 10 ·
Different ways of expressing logarithms
- Maxo
- · Replies 4 ·
Simple Function Question, Can't Figure Out How Answer is Achieved
- teetar
- · Replies 1 ·
How Do You Factor Complex Algebraic Expressions Like This Olympiad Problem?
- Dinheiro
- · Replies 1 ·
Solving a Quadratic Expression: How to Solve 2x^2+9x = -5
- Trent21
- · Replies 4 ·
Show that R is a partial order on ℤ.
- s3a
- · Replies 6 ·
Can different arguments be correct for the same complex number?
- Maxo
- · Replies 4 ·
Set theory: proofs regarding power sets
- Stefan00
- · Replies 5 ·
Factoring algebraic complex expression
- Maxo
- · Replies 5 ·
What is the Probability of Drawing a White Ball from the Second Urn?
- Debdut
- · Replies 5 ·
How Do You Calculate Pitch and Chirality in a Helical Toroid Equation?
- kinogram
- · Replies 14 ·
Finding a limit of an expression when the denominator tends to zero.
- TheSodesa
- · Replies 23 ·
Binomial expansion, general coefficient
- Appleton
- · Replies 7 ·
Is Option 2 the Only Subset of P(C) in This List?
- Horizyn
- · Replies 6 ·
Develop Model Emulating Given Wave Pattern
- ausmate
- · Replies 1 ·
How can I solve for the roots of (z+i)^2=3-4i in my complex number homework?
- HMPARTICLE
- · Replies 5 ·
My proof that the square root of 2 multiplied by r is irrational
- airbusman
- · Replies 2 ·
Calculating n!/(k-1)!(n-k+1)! from Binomial Theorem
- Jef123
- · Replies 3 ·
Finding points of intersection algebraically between 2 trig functions
- Kitty Kat
- · Replies 11 ·
Word problem with exponential and quadratic models
- Serious Max
- · Replies 7 ·
Minor question about solution to Dedekind-Cut proof
- s3a
- · Replies 13 ·
Solving trig equations involving aperiodic functions
- Serious Max
- · Replies 12 ·
Generate a function from a list of numbers
- chipChocolate
- · Replies 7 ·
Form some third degree equation that has the roots -3, -1 and 2.
- TheSodesa
- · Replies 15 ·
Word problem involving sinusoidal model
- Serious Max
- · Replies 6 ·
How can I express f(z) in terms of z?
- MissP.25_5
- · Replies 24 ·
Why Does cos(180-Θ) = -cos(Θ)?
- teetar
- · Replies 8 ·
Binomial expansion of (1+(1/x))^(-1)
- Appleton
- · Replies 2 ·
What Is the Symmetric Triple Quad Formula?
- Septimra
- · Replies 11 ·
Finding flagpole height from two angle measurements
- ratman720
- · Replies 4 ·
Self review: Statistics - Binomial Distribution
- eehiram
- · Replies 5 ·
A problem concerning divisibility and the number 31. (Number theory)
- TheSodesa
- · Replies 2 ·
There are 3 cannibals and 3 missionaries on one side of a river
- airbusman
- · Replies 7 ·
Solve for a, b, c in this system of equations
- uzman1243
- · Replies 2 ·
Any integer = a_0 * 2^n + a_1 * 2^(n – 1) + a_2 * 2^(n – 2) + + a_n
- s3a
- · Replies 9 ·
Is Every Prime Number Defined by Its Unique Factors?
- jonroberts74
- · Replies 2 ·
Regression formula (calculating trends)
- Bourbon daddy
- · Replies 4 ·
Mathmatic relationship (Linear,Quadratic,Exponential)
- Ltpenguin
- · Replies 13 ·
Proving period of f/g could be less than period of f and g
- a1b2c3zzz
- · Replies 20 ·
Is Calculus Required to Determine the Probability of Drawing a Black Ball?
- burgess
- · Replies 3 ·
Why order matters when picking 2 bananas and 2 apples
- christian0710
- · Replies 3 ·
Elementary Trigonometry problem
- GeorgeDirac
- · Replies 6 ·
Problem on interest rates -- Math proof interesting
- lesdavies123
- · Replies 2 ·
Solving a Combinations Problem: 15 or 21?
- christian0710
- · Replies 4 ·
Finding log spiral pitch when radius grows 535.5 times per revolution
- bobie
- · Replies 13 ·
Finding sample size given info on confidence interval
- eterna
- · Replies 3 ·
Proof about product of 4 integers
- cragar
- · Replies 6 ·
Probability of independent events with Venn diagram
- desmond iking
- · Replies 4 ·
What Does ##n(A)## Represent in Set Theory?
- adjacent
- · Replies 2 ·
What is the probability of an integer being divisible by 6 or 8?
- adjacent
- · Replies 12 ·
Simplifying complex exponential expressions with Euler form
- Micky raj
- · Replies 2 ·
Why is 4^0 = 1 and how do fractional exponents work?
- musicgold
- · Replies 3 ·
Coordinate geometry with area of triangle
- americast
- · Replies 7 ·
Solving x^2+4x-5=0, factoring, and finding where it's positive
- Danatron
- · Replies 11 ·
Find f(α)f(β) where f(θ)=cotθ/(1+cotθ) and α+β=5π/4
- suresh
- · Replies 8 ·
How many days for 1 man working 2 hours/day to complete half a work unit?
- 22990atinesh
- · Replies 11 ·
How many men must leave for 99% to drop to 98%?
- galois
- · Replies 17 ·
Probability of hitting a bull's eye
- JJBladester
- · Replies 5 ·
What is the equation of the circumcircle of triangle PAB?
- utkarshakash
- · Replies 18 ·
Finding Coordinates of A and B in an Equilateral Triangle
- adjacent
- · Replies 37 ·
Y-Intercept of Crop Duster Flight Path
- Serious Max
- · Replies 4 ·
What is the angle needed to see a distant point on a circle with a given radius?
- lubo
- · Replies 11 ·
Proof that sqrt(2) is not a rational number
- Jef123
- · Replies 13 ·
Problem involving intersection of a line and a circle
- Serious Max
- · Replies 9 ·
What is the Trigonometry Behind Finding x in Two Triangles?
- Jerry1989
- · Replies 4 ·