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
When to use the formula (nCr x nCr)/nCr?
- jasper10
- · Replies 2 ·
How Do You Calculate the Probability Density Function for Scheduled Visits?
- Dollydaggerxo
- · Replies 1 ·
Solving Probability Problem: P(Z^3 > 1)
- danniim
- · Replies 1 ·
Algebraic Properties of Matrix Operations
- EV33
- · Replies 2 ·
Prove that the additive inverse -v of an element v in a vector space is unique.
- mammarf
- · Replies 7 ·
Converting units in scientific notation to other units.
- CinderTwig
- · Replies 5 ·
Inverse of f(x): Is it a Function or Relation?
- Monocerotis
- · Replies 1 ·
Blood types probabilities problem
- Mspike6
- · Replies 6 ·
Find feild where 1 = 0 and show that it is the only one
- rosh300
- · Replies 3 ·
Simplifying sin(3π/2+x) using angle addition
- shocklightnin
- · Replies 1 ·
How to tell if a base 5 number is odd without converting
- um0123
- · Replies 2 ·
How long will it take for polonium-218 to decay to 30%?
- Edgar92
- · Replies 6 ·
Find the relationship between x and a in the series Tn = (x ln a)^n/n!
- krayzee
- · Replies 1 ·
(1.73 x 10^3) (2.0 x 10^3) = 3.5 x_______?
- land_of_ice
- · Replies 2 ·
Probability that Tom wins a coin-tossing game
- danniim
- · Replies 4 ·
How Can I Solve This Integral Using Trigonometric Substitution?
- sania16
- · Replies 4 ·
Simplify \sum_{i=0}^{n}\binom{n}{i}2^{n-i} to 3^n
- noblerare
- · Replies 2 ·
Finding specific heat with unknown Q
- Kingbaldur
- · Replies 14 ·
Can I Separate a Constant and Variable Expression in Exponential Manipulation?
- winterwind
- · Replies 5 ·
Prove that 0v = 0 for an arbitaryvector v belong to V
- zeion
- · Replies 5 ·
Prove Power Set equation by Induction
- Happyzor
- · Replies 4 ·
How do I make a compensation vector?
- yamugushi
- · Replies 2 ·
Prove that the additive identity in a vector space is unique
- zeion
- · Replies 5 ·
What Is the Domain of the Function h(x) = sqrt(4 - x) + sqrt(x^2 - 1)?
- crono_
- · Replies 8 ·
Find b such that 3sin(x) - 1 = b has one solution in (0,2π)
- TyErd
- · Replies 14 ·
Develop Cubic equation with a few points
- LSCupcake
- · Replies 5 ·
Why does shifting a function to the right require a smaller input variable?
- greenneub
- · Replies 3 ·
Calculating Effect of Wind on Sprint Time: Why?
- heraclius
- · Replies 4 ·
Normal Distribution: Hypothesis Testing
- Draggu
- · Replies 8 ·
Limit of Function at (-1,3): Does it Exist?
- Nope
- · Replies 4 ·
Finding the limit of f(x) as x approaches infinity
- Nope
- · Replies 5 ·
Solving for Guy Wires using the Law of Cosines - 100ft Tower on a Hill
- gabrielh
- · Replies 8 ·
How Do You Model the Motion of a Spring Attached to a Ceiling with Energy Loss?
- Hockeystar
- · Replies 1 ·
Finding the Intercepts and Asymptote of a Graph with Exponential Functions
- TyErd
- · Replies 19 ·
Solve the equation (sin and cos problems)
- jegues
- · Replies 16 ·
How do you determine equation for this simple composite function?
- Cuisine123
- · Replies 2 ·
Efficient Enumeration of Elements in a Group Defined by Generators
- ethylparaben
- · Replies 3 ·
Econometric Notation: Understanding E (GPA|SAT) and Its Meaning
- 60051
- · Replies 1 ·
Further trigonometry (higher) test review
- Gringo123
- · Replies 6 ·
Derivative optimization with trigonometric functions
- livelaughlove
- · Replies 6 ·
Log5(x) = 16logx(5) solve for x
- TyErd
- · Replies 12 ·
Solving 12x^2 - 9 = 0: What to Do Next?
- Jimmy84
- · Replies 10 ·
Questions: How Far from Point P is a Given Line?
- golb0016
- · Replies 5 ·
How Do Composite Transformations Affect Coordinates?
- golb0016
- · Replies 1 ·
Find center and radii of a circule
- lucky strike
- · Replies 1 ·
Prove a=b=2 given a+b = ab = a^b
- Norway
- · Replies 37 ·
:trigonometric identity question
- Edgar92
- · Replies 4 ·
Why is ω(f;[-a,a];δ) = ω(f;[0,a];ε) for an even function?
- matt_747
- · Replies 2 ·
How do I change the variable in this expression?
- PolyFX
- · Replies 3 ·
Cubic Polynomials: Solving w/o Rational Roots
- Jack Diamond
- · Replies 3 ·
Lateral Area and Volume of a Pyramid
- golb0016
- · Replies 1 ·
Micrometer reading/area of wire calculation
- Deliria
- · Replies 4 ·
Cone volume from a 3-4-5 triangle
- golb0016
- · Replies 5 ·
Prove Lebesgue Measure of f-g over [a,b]
- matt_747
- · Replies 1 ·
What is the bearing of a ship sailing 120 km on a heading of 070 degrees?
- Gringo123
- · Replies 4 ·
Find the length of the adjacent
- Gringo123
- · Replies 2 ·
Deck of Cards Probability Question
- mr.physics
- · Replies 12 ·
Why are abba and abbbba always divisible by 11?
- um0123
- · Replies 8 ·
Proofing a Rhomb - Get the Answer Here
- aRTx
- · Replies 3 ·
Continuity of Multivariable Functions
- Chewy0087
- · Replies 5 ·
How Do You Calculate the Area of a Rectangle with Given Perimeter and Diagonal?
- LeadyKnight
- · Replies 3 ·
Is the product of sample observations sufficient for theta in a gamma distribution?
- cse63146
- · Replies 8 ·
Unit vector perpendicular to two known vectors
- cjwalle
- · Replies 2 ·
Can a cubic with rational coefficients have all irrational roots?
- Mentallic
- · Replies 2 ·
How do I factorise this cubic expression?
- physicsfun_12
- · Replies 3 ·
Why does vector multiplication sometimes give a number and sometimes a matrix?
- 60051
- · Replies 6 ·
How Do You Calculate the Surface Integral of a Cylinder?
- hhhmortal
- · Replies 1 ·
What is the solution for -42.2=-10.999x+-4.9x^2?
- Shawn Garsed
- · Replies 4 ·
Mathematical Induction: Chapter 1, Example 4 from WiM? by Courant
- DarrenM
- · Replies 5 ·
Finding E(Y) for sample variance with N(μ,σ) distribution
- cse63146
- · Replies 9 ·
Finding an angle from a geometry diagram
- golb0016
- · Replies 4 ·
Solving a Trigonometric Equation to Hit a Moving Target
- peanut648
- · Replies 1 ·
Have I rearraged this formula correctly?
- Gringo123
- · Replies 2 ·
Solving the Quadratic Equation: x^2 - 5x >= 0
- Jordash
- · Replies 2 ·
Verify that cos(2x)-cos(4x)/sin(2x)+sin(4x)=tanx
- Superstring
- · Replies 9 ·
Use x^2+2 in the Difference Quotient
- Tonik
- · Replies 3 ·
Finding the ticket price that maximizes revenue for an amusement park
- rice1am
- · Replies 3 ·
Simplifying Algebraic Expressions
- Jimmy84
- · Replies 3 ·
Applying a sinusoidal function to tidal patterns on the earth.
- stripes
- · Replies 4 ·
Writing an equation in general form (circles)
- kamo00800
- · Replies 3 ·
Finding profit share ratio with different investment amounts and periods
- Gringo123
- · Replies 1 ·
Product of two consecutive integers
- nobahar
- · Replies 9 ·
How do I solve for x in this logarithmic equation?
- Cuisine123
- · Replies 1 ·
What is the next number in the sequence 25, 27, 30, 15, 5, 7, 10?
- Drksilver163
- · Replies 4 ·
Finding exact values of sin, cos, tan using symmetry
- tomwilliam
- · Replies 12 ·
How to approach geometry proofs when starting from scratch
- _humanoid_
- · Replies 1 ·
Solving (4/3)sinxcosx - sin²2x = 0 for x in [0, 2π]
- Cuisine123
- · Replies 8 ·
Solving 4^x + 2^(x+1) = 60
- Cuisine123
- · Replies 2 ·
Factor Completely (PreCalculus)
- GreenPrint
- · Replies 6 ·
Finding resultant of three vectors with components
- seizureboi
- · Replies 1 ·
How can I simplify this equation by substituting for Vf2?
- jedr
- · Replies 5 ·
Binomial probability, similar to lottery problems.
- alexburns1991
- · Replies 1 ·
Solve the Blue Angle in a Simple Geometry Problem
- Apexny
- · Replies 1 ·
Using the Quadratic Formula to Solve y + 1/y = x
- paridiso
- · Replies 4 ·
How do I solve for x in this equation?
- Cuisine123
- · Replies 5 ·
Converting recurring decimals to fractions
- Gringo123
- · Replies 17 ·
How do I evaluate this log expression?
- Cuisine123
- · Replies 2 ·
How do I solve for x in this log equation?
- Cuisine123
- · Replies 2 ·
How Far Should You Stand from the Statue of Liberty for the Best Viewing Angle?
- nvidia69
- · Replies 1 ·
Proof question from How to Prove It
- paridiso
- · Replies 2 ·