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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Normally distributed student reaction time
- archaic
- · Replies 1 ·
How many subsets are in {∅} and {0}?
- angela107
- · Replies 4 ·
Group theory with addition, multiplication and division
- penroseandpaper
- · Replies 13 ·
Calculating a mean related to a continuous random variable
- archaic
- · Replies 7 ·
Domain of a composite function with square root and quotient
- srfriggen
- · Replies 1 ·
Is A ∖ (A ∖ B) = A ∩ B correct for all sets?
- angela107
- · Replies 2 ·
Steinharts-Hart equation: Calculating the coefficients marathon
- 71GA
- · Replies 2 ·
Determining the radius of a concentric circle.
- angela107
- · Replies 4 ·
Simultaneous equations substitution method
- hackedagainanda
- · Replies 3 ·
My first proof ever - Linear algebra
- MexChemE
- · Replies 4 ·
Determining the domain and range for the function ##f^{-1}##
- angela107
- · Replies 2 ·
Solving trigonometric equations as fractions of π
- AN630078
- · Replies 5 ·
Help with this algebra problem
- t3rom
- · Replies 5 ·
Trigonometric equation solving 2cos x=tan x
- AN630078
- · Replies 6 ·
15 people flip coins, find the probability distribution
- Addez123
- · Replies 12 ·
Trigonometry: finding an angle, area and length of sector of a circle
- AN630078
- · Replies 2 ·
Solving trigonometric equations with multiple angles
- AN630078
- · Replies 1 ·
Finding a and d from the Sum of an Arithmetic Series
- AN630078
- · Replies 2 ·
Expected Value: Bidding for a House
- Master1022
- · Replies 31 ·
Proof of a dot product using sigma notation
- happyparticle
- · Replies 19 ·
Decimal points different in these two answers
- chriscarson
- · Replies 17 ·
Differents ways of ordering bars and stars
- LCSphysicist
- · Replies 3 ·
Do people actually attempt to solve this kind of puzzle manually?
- musicgold
- · Replies 22 ·
Solving simultaneous equations for motorway and country road journey
- AN630078
- · Replies 5 ·
List all pairs of permutations with repetition with the given conditions
- Robin04
- · Replies 5 ·
Describing recursive formulae in words
- mse14
- · Replies 1 ·
How does wall thickness affect stress in a hollow sphere?
- musicgold
- · Replies 5 ·
Simultaneous Equations Alternate Approach
- hackedagainanda
- · Replies 9 ·
Simplify this term—best approach?
- ElectronicTeaCup
- · Replies 5 ·
Staying positive during difficult times
- Kirstenclick
- · Replies 3 ·
Complex numbers: convert the exponential to polar form
- ac7597
- · Replies 9 ·
Dividing with indices resulting in incorrect sign
- Dickie
- · Replies 4 ·
Stacking rings on fingers by decreasing stack size (permutations)
- archaic
- · Replies 1 ·
Conditional Probability + Poisson Distribution
- jisbon
- · Replies 14 ·
Calculate P(|Xn| > .08), n = 16
- Addez123
- · Replies 6 ·
Proving a function is injective
- Cha0t1c
- · Replies 10 ·
Probability that the weight of the carts exceeds 255 tons
- Addez123
- · Replies 3 ·
How Do I Calculate Confidence Intervals for Two Means?
- girlwhoneedsmathhelp
- · Replies 1 ·
Finding X3 given X1 and X2 with difference (3,3,3)
- Soma
- · Replies 2 ·
Basic geometry question in a physics book
- aspodkfpo
- · Replies 21 ·
Mixture problem with two percentages and total value
- hackedagainanda
- · Replies 20 ·
Solving y^2-2ln(y)=x^2 for y
- majdgh
- · Replies 8 ·
Determining if a number is within an interval
- rxh140630
- · Replies 5 ·
What is the distance formula problem for achieving an average speed of 50 mph?
- hackedagainanda
- · Replies 24 ·
What is the Remainder When f(x) is Divided by (x+1)?
- songoku
- · Replies 7 ·
Evaluate this trigonometric identity
- lioric
- · Replies 55 ·
"To the power of" (powers in division have to be subtracted)
- chriscarson
- · Replies 55 ·
Find the range of possible dimensions for a volume
- Traced
- · Replies 9 ·
Minimum number of numbers to express every integer below N as a sum
- CricK0es
- · Replies 4 ·
Algebra: Age word problem/Linear equation
- hackedagainanda
- · Replies 14 ·
Solution of a depressed cubic equation
- PainterGuy
- · Replies 4 ·
Intersection of a circle and a parabola
- rajeshmarndi
- · Replies 5 ·
Correct statement about composite and inverse functions
- songoku
- · Replies 14 ·
Value of this trigonometric expression
- songoku
- · Replies 14 ·
Data Management - Probability of Cards
- marialovesphysics
- · Replies 1 ·
Product of two magnitude of vectors
- songoku
- · Replies 2 ·
Is the Proof for a Complex Inner Product Space Correct?
- hsazerty2
- · Replies 5 ·
Subtracting fractions to get 17/20
- chriscarson
- · Replies 32 ·
Value of "a" between two real roots of quadratic equation
- songoku
- · Replies 2 ·
Is there a better way to solve this linear equation with fractions?
- hackedagainanda
- · Replies 19 ·
Solving 8/(x - 2) - 13/2 = 3 with fractions
- hackedagainanda
- · Replies 3 ·
Find the set of points that satisfy:|z|^2 + |z - 2*i|^2 =< 10
- Makadamij
- · Replies 4 ·
Why does this rational function have a horizontal asymptote at y=0 instead of y=1?
- Sunwoo Bae
- · Replies 4 ·
Basic Proportionality Theorem (Thales Theorem)
- SSG-E
- · Replies 18 ·
How many license plates with A-?-? 1-2-?
- requied
- · Replies 36 ·
How can I compose these like (y^2-x^2)(z^2-x^2)(z^2-y^2)
- requied
- · Replies 2 ·
Profit / loss trading calculator for share market historical data
- mp3streetpart
- · Replies 1 ·
Probability of a 4 character code without repetition
- scottdave
- · Replies 16 ·
Find F(x) given X and Y values
- Drakkith
- · Replies 13 ·
How to expand this ratio of polynomials?
- Gourab_chill
- · Replies 16 ·
Is dlπ/2 equivalent to dl/(dlπ/2)?
- LCSphysicist
- · Replies 2 ·
Factoring Trinomials: 7x^2-15x+7x-105=0
- supermath
- · Replies 29 ·
How do you properly add logarithms with negative characteristics by hand?
- gerid21
- · Replies 7 ·
Help completing a linear inequality table
- wael_khayati
- · Replies 13 ·
Calculating the Limit of (1 + 2^x)^(2^(-x))
- LCSphysicist
- · Replies 5 ·
Probability of receiving a binary one
- Addez123
- · Replies 5 ·
Are these two dice rolls dependent or independent?
- Addez123
- · Replies 5 ·
Different types of hyperbolas and their properties
- Gourab_chill
- · Replies 29 ·
CoM reduced by total body height when bending your knee X degrees
- Pushies
- · Replies 4 ·
Conditional probability of dying from eating a poison fruit
- Addez123
- · Replies 4 ·
68068 as difference of two squares
- Robert Houdart
- · Replies 5 ·
Determining whether a set is a vector space
- Valerie Witchy
- · Replies 15 ·
Is there a more accurate way to estimate sales quantities?
- help
- · Replies 13 ·
Longest geometric progression that can be obtained from a given set
- Physics lover
- · Replies 16 ·
No. of positive integral solutions of fractional functions
- Physics lover
- · Replies 14 ·
Markov chain on state {1, 2, 3, 4, 5, 6 , 7}
- Janji
- · Replies 4 ·
Calculate side DC in this triangle
- VitaminK
- · Replies 2 ·
Solving |3x - 5| > |x + 2| and |x - 3| + |2x - 8| = 5
- askor
- · Replies 4 ·
How Do You Find the Line of Symmetry for Isosceles Triangle ABC?
- mark123
- · Replies 3 ·
Calculation using 3 quantities: Shoveling snow to earn money
- zak100
- · Replies 24 ·
Help with series problems
- Physics lover
- · Replies 18 ·
Probability of type 1/type 2 errors and distribution of p-values
- humantripod
- · Replies 1 ·
Tricky problem from Probability
- Physics lover
- · Replies 34 ·
Difficult Problem with Matrices
- Physics lover
- · Replies 16 ·
Graph complex numbers to verify z^2 = (conjugate Z)^2
- il postino
- · Replies 9 ·
Calculate the total area of this rectangle
- VitaminK
- · Replies 3 ·
Polar Curve Equation Confusion
- lightlightsup
- · Replies 1 ·
Resultant of two orthogonal vectors
- Crystal037
- · Replies 9 ·
Proving the arctan addition formula for |x|, |y| < 1
- issacnewton
- · Replies 17 ·
Does heating a substance in a closed room raise the room temperature?
- bnd_20191
- · Replies 6 ·