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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Selecting 3 persons sitting round a table
- Saitama
- · Replies 40 ·
How Many Integers Meet the Condition {√n - √(23×24)}² < 1?
- pratikaman
- · Replies 2 ·
Solving system of equations with nested parentheses
- Hivoyer
- · Replies 5 ·
System of two equations with fractions
- Hivoyer
- · Replies 4 ·
How to Divide a Polynomial by a Binomial Using Long Division
- Googl
- · Replies 11 ·
Simplify Expression and Find Product of a*b + 15m + 11n + 8
- ParisSpart
- · Replies 5 ·
Calculating ρ(Y,Z) for Independent Variables X1..Xn+Xn+1
- ParisSpart
- · Replies 5 ·
Geometric and arithmetic series
- Government$
- · Replies 5 ·
Finding two circles through chord endpoints with distance constraint
- odolwa99
- · Replies 6 ·
Locus of z satisfying (z + 2i)/(2z + i) < 1
- mia5
- · Replies 9 ·
Cartesian and vector equations
- Jbreezy
- · Replies 8 ·
Calculating the Distance of a Line to the Origin in 3D Space
- Jbreezy
- · Replies 27 ·
Periodic or not? Determine the wave function
- jackscholar
- · Replies 5 ·
How to Solve Logarithmic Equations? Find x^2*y^5/z^4
- Mermaid4220
- · Replies 8 ·
How should I attach the guy wires to my new tree for support in bad weather?
- jtwin2
- · Replies 9 ·
Mathematical Logic and Structures
- rafa_mota04
- · Replies 1 ·
What Is the Correct Calculation for the Conditional Expected Value of an Even X?
- ParisSpart
- · Replies 11 ·
Calculating Value of "a" for Independent X,Y Variables
- ParisSpart
- · Replies 6 ·
Solve the equation exactly for x
- Mermaid4220
- · Replies 9 ·
How do I Expand a Cubic Problem?
- Grove1996
- · Replies 5 ·
Combinatorics Problem: Finding Number of Subsets in a Set of Four-Digit Numbers
- Government$
- · Replies 2 ·
Is first year EM harder than other first year physics topics?
- martinlematre
- · Replies 4 ·
Probability Quiz: Variables X1 to X46, Expectation E(Xj)=0
- ParisSpart
- · Replies 4 ·
Finding arcsin(2) using complex exponentials
- Craptola
- · Replies 2 ·
Ambiguous case of sine rule with multiple angle solutions
- CallMeSwayze
- · Replies 5 ·
Show this function is associative (or provide a counter example)
- ArcanaNoir
- · Replies 69 ·
Calculate L using Omega, Lo = 16, and h = 1.5
- eddievic
- · Replies 4 ·
Finding explicit formula of this recursion formula
- Ace.
- · Replies 4 ·
Finding two circles with radius √20 through (-1,3) centered on x+y=0
- odolwa99
- · Replies 2 ·
Optimal linear combination of independent estimates for minimizing variance
- Andre
- · Replies 1 ·
Probability - equation involving prime number
- Saitama
- · Replies 5 ·
Polynomial Division 2: Step-by-Step Solution for (x^3-3x^2+12x-5)/(x-2)"
- eddievic
- · Replies 4 ·
Permutations of x elements with repeated A and B from pool of n
- Big-Daddy
- · Replies 12 ·
Fraction Simplification: Solving Equations with Constants C, L, and R
- jkface
- · Replies 2 ·
Trouble with the definitions of equivalent and collinear.
- Esoremada
- · Replies 1 ·
Finding the range of values for tan theta > 1
- needingtoknow
- · Replies 1 ·
Solving a Triangle's Angles with an Equation
- Saitama
- · Replies 6 ·
Probability Wind or Rain if it's Windy?
- Whalstib
- · Replies 28 ·
External division of a line segment
- Nero26
- · Replies 7 ·
Finding E(X+Y) from a joint probability distribution
- ParisSpart
- · Replies 7 ·
How many ways can a cube be painted with distinct colors?
- Saitama
- · Replies 7 ·
Difficult Stats Problem (Repeated Elements)
- Big-Daddy
- · Replies 7 ·
Few questions different topics
- lionely
- · Replies 6 ·
Variables and their common density
- ParisSpart
- · Replies 11 ·
Trigonometry 3d pyramid question
- needingtoknow
- · Replies 8 ·
Probability of combination lock
- stunner5000pt
- · Replies 2 ·
What Are the Probabilities of Different Seating Arrangements at a Party?
- stunner5000pt
- · Replies 2 ·
What is the value of alpha + beta + gamma?
- Saitama
- · Replies 11 ·
Product Moment Correlation coefficient
- songoku
- · Replies 4 ·
Parametric Vector Equation for Line AB Using λ as the Parameter
- Jbreezy
- · Replies 10 ·
Points relative to vectors. And Eq of line. Vectors
- Jbreezy
- · Replies 5 ·
How to count Spearman Rank order correlation
- Drudge
- · Replies 1 ·
Finding positive integer solutions to xy/(x+y) = 2³×3⁴×5⁶
- Saitama
- · Replies 16 ·
Finding the domain of this function
- nothingsus
- · Replies 3 ·
Why does my doubling time calculation give 2t₀ + b/a instead of t₀ + b/a?
- physicsernaw
- · Replies 2 ·
Number of integer solutions to |x|+|y|+|z|=10
- Saitama
- · Replies 7 ·
Statistics- Rolling a loaded die
- dinospamoni
- · Replies 3 ·
Statistics Question -> Elevator Question
- GreenPrint
- · Replies 1 ·
Linear regression calculations differ between Excel and manual methods
- Drudge
- · Replies 2 ·
Find the period of f(x) = e^(3{x}) where {x} is the fractional part
- utkarshakash
- · Replies 3 ·
Proving x × v = u × v = x × u given x + v = u
- Jbreezy
- · Replies 7 ·
Finding the limit as x approaches π/3 of (1−2cos x)/(π−3x)
- songoku
- · Replies 6 ·
Curve and tangent line problem, finding the area of enclosed region
- needingtoknow
- · Replies 3 ·
Arctan of Product: How to Rewrite \arctan(a*b) Using the Product Rule?
- Niles
- · Replies 2 ·
Finding the center of symmetry between two ellipses
- scientifico
- · Replies 6 ·
Vectors - Groundspeed question
- kariibex
- · Replies 5 ·
Adding four arctangents with the addition formula
- mgamito
- · Replies 2 ·
Trigonometric functions ->sine function EASY
- Voltman123
- · Replies 7 ·
Notation Confusion in Linear Transformations
- Offlinedoctor
- · Replies 1 ·
Prove (csc x + cot x)/(csc x - cot x) = (1 + 2cos x + cos²x)/sin²x
- Ace.
- · Replies 3 ·
What Is the Probability of Getting Exactly 50 Women in a Sample of 100?
- Drudge
- · Replies 22 ·
How Do You Solve This Trigonometric Limit Problem?
- songoku
- · Replies 4 ·
What is the difference between 25i*20i/5i and 25i*20i/(5i) in CMPLX mode?
- Nero26
- · Replies 5 ·
Find the Circumradius for a Triangle
- AGNuke
- · Replies 2 ·
Interpreting Wolfram Alpha's periodic solution for theta
- Clever_name
- · Replies 5 ·
Can someone tell me if this is a bipartite graph?
- Topgun_68
- · Replies 8 ·
What Was the Accuracy of HIV Testing for Marriage Licenses in Illinois in 1988?
- Darth Frodo
- · Replies 2 ·
Equation of a Circle Given Touching Point on x-axis and Containing Point
- Government$
- · Replies 6 ·
How are these two equations equal? trig identities possibly?
- Chaoticoli
- · Replies 3 ·
Radioactive decay - log question
- karmatic
- · Replies 3 ·
'Is $ℜ$ an equivalence relation?
- zeraoulia
- · Replies 2 ·
Converting scientific notation to standard digit numbers
- chestycougth
- · Replies 3 ·
Combination: 3 boys with 7 chairs
- Michael_Light
- · Replies 3 ·
Finding period of f(x) = cos(cos x) + cos(sin x)
- utkarshakash
- · Replies 6 ·
Finding the Standard Equation for the Ellipse with Given Vertices and Foci
- iheartmydog
- · Replies 1 ·
Verify answers for 4 combinatorics and probability problems
- juanitotruan77
- · Replies 2 ·
Eliminating parameters and graphing parametric equations
- Supreme
- · Replies 1 ·
Prove that C(n,m) equals a sum of three binomial coefficients
- Government$
- · Replies 19 ·
Probability of Getting 10 Pairs from a Box of 30 Socks
- juanitotruan77
- · Replies 61 ·
Derive average rate of change formula of cos
- andrewkg
- · Replies 2 ·
Finding inverse functions and verifying f^-1 f = x
- kingstar
- · Replies 2 ·
How to Solve an Inequality with Greatest Integer Function and Fractional Part?
- utkarshakash
- · Replies 2 ·
Factor Theorem: What is the correct way to use it?
- matthew1982
- · Replies 3 ·
What is the relationship between the perpendiculars in a 3D vector?
- lionely
- · Replies 6 ·
Arranging red, green, and gray books with same-color grouping
- Government$
- · Replies 2 ·
Estimating Expected Value of a Random Variable X from 129 Rolls of a Dice
- ParisSpart
- · Replies 6 ·
Basic algebra ex. prob., can't work out a step
- fisixfred
- · Replies 6 ·
Find the Least Upper Bound for P(X>=5) with Chebychev Probability and E[e^X]=19
- ParisSpart
- · Replies 1 ·
Finding a Normal Vector for a Plane Defined by Two Lines
- fawk3s
- · Replies 2 ·
Trig equation involving multiple angles
- waterliyl
- · Replies 1 ·