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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Verifying Sin2A = 2SinACosA with A=30deg
- Miike012
- · Replies 3 ·
Conditional distribution of first card given second card value
- cse63146
- · Replies 1 ·
Creating a table from a system of linear equations
- armolinasf
- · Replies 1 ·
Solving 2n·cos²(n)=1000
- dirtyaldante
- · Replies 1 ·
Expressing 0.0007 percent in real world terms
- mikeR3975
- · Replies 12 ·
Exponents and Imaginary Numbers
- Natalie89
- · Replies 7 ·
Equilateral triangle proof: why OP² = 4PM² = 4OP² - 4a²?
- Miike012
- · Replies 8 ·
How Do You Prove Sets Have Cardinality Aleph-Nought?
- dhillon
- · Replies 5 ·
Finding two exponential equations with y-intercept 5 and asymptote y=3
- haleym
- · Replies 2 ·
Problem with a trigonometric equation.
- Shawn Garsed
- · Replies 3 ·
Are A⊆B iff B'⊆A' and does A∩C⊆B∩C imply A⊆B?
- dhillon
- · Replies 7 ·
What is the diagram for a particle attached to 2 elastic light springs?
- aurao2003
- · Replies 2 ·
Can I use this formula to simplify my summations?
- Luongo
- · Replies 1 ·
Can any triangle use the Pythagorean theorem?
- Miike012
- · Replies 2 ·
Solve arctan(2/x) - arctan(1/x) = 15
- Pawnag3
- · Replies 4 ·
Set theory question it , thank you
- dhillon
- · Replies 3 ·
Behaviour Under Simple Transformations
- haleym
- · Replies 3 ·
Unpacking Trig Ratios: Understanding Sine, Cosine, Tan, and More
- Miike012
- · Replies 3 ·
Prove: Tan^2 - sin^2 = sin^4*Sec^4
- Miike012
- · Replies 2 ·
Strategies for proving trig identities
- Miike012
- · Replies 5 ·
Find 'k' in Circle Inscribed in a Triangle
- zorro
- · Replies 15 ·
Why does interval bisection give 1.4 when I got 1.3 after two iterations?
- aurao2003
- · Replies 8 ·
What Are the Domain and Range of Transformed Functions?
- coco richie
- · Replies 4 ·
Is f(x) = x^2 - 6x even or odd?
- coco richie
- · Replies 7 ·
Simplifying (x^(1/2)+1)(x^2-x-2)(x-2)^(-1)
- Dragonetti
- · Replies 6 ·
Therefore, cos/(1-tan) + sin/(1-cot) = sin + cos
- Miike012
- · Replies 2 ·
Solving the Stamp Problem: Finding the Greatest Amount for Perfect Change
- armolinasf
- · Replies 1 ·
Determining whether system of equations have a solution
- katerine
- · Replies 1 ·
Polynomial function - different degrees don't understand
- zeion
- · Replies 6 ·
Finding the Average Rate of Change for a Trig Function on a Given Interval
- DespicableMe
- · Replies 1 ·
Finding when a coin lands using quadratic equation
- kylepetten
- · Replies 7 ·
AP Physics 1983 Exam: Question #3
- ApPhysics2011
- · Replies 3 ·
Circular measure with trigno. Wrong answer.
- SolCon
- · Replies 8 ·
Textbook divides character count by 6 instead of 9 for sample square
- nukeman
- · Replies 4 ·
Normal distribution - Finding mean and standard deviation
- James...
- · Replies 4 ·
Need a review on how to factor cubic polynomials
- Propagandhi
- · Replies 2 ·
Finding x-intercepts of 2x³ - 6x² - 18x + 7
- Jet1045
- · Replies 8 ·
A few problems i've come across some trouble with.
- icesalmon
- · Replies 7 ·
Prove √((1 - cos A)/(1 + cos A)) = cosec A - cot A
- Miike012
- · Replies 3 ·
Distance of point to line (cross product)
- quietrain
- · Replies 8 ·
What are the versed sine and coversed sine of an angle?
- Miike012
- · Replies 1 ·
What Is the Angle Between Two Vectors if Their Magnitudes Are Equal?
- quietrain
- · Replies 7 ·
At what point did I serve two rows at once?
- moonman239
- · Replies 1 ·
Equation for Ellipse from a chord - no other parameters
- uno4short
- · Replies 13 ·
Easy trig prob what did I do wrong?
- Miike012
- · Replies 7 ·
What is the relationship between similar regular polygons?
- Miike012
- · Replies 1 ·
Solving a Fractional, Single-Variable, Inequality
- nicksbyman
- · Replies 6 ·
How Does a Truck's Axle Motion Combine with Spring Oscillation?
- KatelynO
- · Replies 5 ·
Why 57 Degrees Was Chosen for One Radian
- Miike012
- · Replies 2 ·
Solve Exponential Limit Problem
- planauts
- · Replies 2 ·
Probability of unfair tax code opinion in sample of 1000 people
- g3lo
- · Replies 3 ·
Discovering Pi: Unraveling the Mystery of an Irrational Number
- Miike012
- · Replies 9 ·
Calculating Earth's Distance from the Sun in One Year
- Miike012
- · Replies 4 ·
Calculating n with Super-Fast Computing: P1-P4
- blackle
- · Replies 4 ·
Does the radian measure change with circle radius?
- Miike012
- · Replies 21 ·
Solve Sequence Problem: Estimate World Population 1799-1900
- notme
- · Replies 4 ·
Proving sqrt of 3 is irrational
- armolinasf
- · Replies 18 ·
Why break degrees into minutes and seconds in trigonometry
- Miike012
- · Replies 8 ·
Finding arc length with radius 10 and central angle 70 degrees
- Miike012
- · Replies 5 ·
Converting 0.E from hexadecimal to binary
- sporus
- · Replies 7 ·
Writing sqrt(2)sin(pi(x-2.25)) as a difference of sine and cosine
- endverse
- · Replies 2 ·
Calculating Connectivity Patterns in a Computer Network
- blackle
- · Replies 3 ·
What does it mean for y to be a function of x?
- Miike012
- · Replies 7 ·
Does x^3 + x^2 - 1 factor?
- Miike012
- · Replies 17 ·
Two confusing questions on Probability
- zorro
- · Replies 11 ·
2x2 matrix with A inverse equals A transpose
- sshh
- · Replies 1 ·
Finding bearing from A to C given two plane flight segments
- Phyzwizz
- · Replies 5 ·
Finding the HCF of Numerator and Denominator
- Miike012
- · Replies 5 ·
Conditional probability with 4 balls in 4 cells
- Frank69
- · Replies 8 ·
Prove PM is Diameter in ΔABC with ∠A = 90°
- Lukybear
- · Replies 4 ·
What is the Origin of the Approximation?
- Beer-monster
- · Replies 4 ·
Combinatorics Problem: Choosing Couples in a Dance Class with 22 Students
- arsato
- · Replies 3 ·
Which Probability Calculation is Correct for Defective Bulbs in a Sample?
- zorro
- · Replies 7 ·
Finding angle b/w line equation and tangent.
- SolCon
- · Replies 6 ·
Finding Solutions in Natural Numbers for x^2+y^2=4z^2 and x^2+3y^2=4z^2
- oszust001
- · Replies 2 ·
Probability - A and B are two weak students
- zorro
- · Replies 2 ·
Solving a complex trigonometric equation involving sin and cos
- ts547
- · Replies 7 ·
Geometric sequences and Fibbonacci Numbers
- armolinasf
- · Replies 2 ·
Pascal's Triangle: 40 Paths to Spell BINOMIAL
- kerrwilk
- · Replies 2 ·
Proving a³+b³+c³=3abc and complex number equality
- armolinasf
- · Replies 5 ·
Solving equations with greatest integer function
- Bea77
- · Replies 4 ·
Rocket launch reliability with abort system and catastrophic failure
- matt222
- · Replies 11 ·
Proving Newton's Law of Universal Gravitation
- abcd8989
- · Replies 1 ·
Finding the Infinite Series Expansion of e^(-x)cos(x)
- jf623
- · Replies 6 ·
How do you expand algebraic expressions to the nth power?
- WilliamK
- · Replies 3 ·
Explain two different methods for using combinations
- kerrwilk
- · Replies 1 ·
Find and normalize a vector orthogonal to (1-i,1,3i) and (1+2i,2,1)
- Grand
- · Replies 7 ·
Equation of a Tangent Line - PreCalc
- KatelynO
- · Replies 13 ·
The probability that symbol j is sent and symbol k is received
- SamTaylor
- · Replies 5 ·
Electromagnitic fields questions
- ruwi2
- · Replies 3 ·
Expected number of trials before all cards are collected
- xcrunner448
- · Replies 2 ·
A couple of not so simple problems from old contests
- myro111
- · Replies 4 ·
Binomial coefficient summation proof
- zeion
- · Replies 5 ·
What percentage of carbon rods are rejected as undersize or oversize?
- matt222
- · Replies 3 ·
Boat travelling in river without current
- armolinasf
- · Replies 4 ·
Boolean algebra -Sum of products form - theorem
- icelated
- · Replies 1 ·
Is My Induction Proof for (1+ny) ≤ (y+1)n Correct?
- nascentmind
- · Replies 8 ·
Alternative ways to prove a trigonometric identity
- icystrike
- · Replies 7 ·
Number of Non-Fiction Humourous Books for Children in a Bookstore
- kerrwilk
- · Replies 3 ·
Solving Simple Transposition Problem for Charge Separation in Air
- MattNotrick
- · Replies 4 ·