Precalculus Mathematics Homework Help Forum

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

Answer: 10-Card Hand w/ 2 4-of-a-Kinds - No Pairs/3 of a Kinds

  • toothpaste666
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6

Find Value of Limit Involving Trig. Identity w/o L'hopital Rule

  • songoku
  • · Replies 8 ·
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8

Evaluating Sum from j=1 to n: i=k

  • whatisreality
  • · Replies 2 ·
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2

Determining the Period of sin(ax)*cos(bx)

  • deusy
  • · Replies 9 ·
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9

Finding distance for a given value between vectors

  • Lanniakea
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4

Proving a couple of lines do not intersect a plane in ℝ4

  • JulienB
  • · Replies 5 ·
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5

Probability of Poisson event happening twice, consecutively

  • cmkluza
  • · Replies 5 ·
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5

Random variables (probability)

  • TheMathNoob
  • · Replies 2 ·
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2

Angle between two vectors (Only by having their lengths)

  • Driverfury
  • · Replies 6 ·
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6

Confusion about conditional probability

  • TheMathNoob
  • · Replies 7 ·
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7

Proving sin(θ + Φ) = cosθsinΦ + sinθcosΦ with geometry

  • JS-Student
  • · Replies 3 ·
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3

Complex absolute value inequality

  • Steve Turchin
  • · Replies 2 ·
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2

Find a line in the rectangle from 0.0 to some point

  • TheMathNoob
  • · Replies 4 ·
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4

Scientific notation and powers with the laws of exponents

  • Meezus
  • · Replies 22 ·
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22

Marginal PMG of of 2 random variables with Joint PMF

  • whitejac
  • · Replies 4 ·
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4

Use of binomial theorem in a sum of binomial coefficients?

  • gruba
  • · Replies 1 ·
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1

Combinatorial Solution to School Admission Interview Scheduling Problem

  • erisedk
  • · Replies 16 ·
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16

Prove (n+1)nPr=(n+1)P(r+1)

  • Pual Black
  • · Replies 7 ·
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7

Calculating the roots of a quadratic with complex coefficien

  • astrololo
  • · Replies 17 ·
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17

Equation solving/solving for x

  • Weightofananvil
  • · Replies 6 ·
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6

How Do You Solve the Equation 4^(x-1) = 2^x + 8?

  • cmkluza
  • · Replies 4 ·
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4
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4

Determine the value of B and C of a function

  • bbsamson
  • · Replies 4 ·
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4

Understanding Probability and Observations in Statistics

  • Callix
  • · Replies 7 ·
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7

How do I solve the equation e^(2x)-2=e^x?

  • Jaco Viljoen
  • · Replies 8 ·
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8

Combinatorics / Probability ( checking my answer)

  • Matejxx1
  • · Replies 4 ·
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4

Iterations in the Euclidean algorithm

  • Panphobia
  • · Replies 5 ·
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5

What is the domain for solving the equation √(5+x)-x=3 and writing down D(g)?

  • Jaco Viljoen
  • · Replies 14 ·
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14

Arithmetic progression. find p.

  • tesha
  • · Replies 4 ·
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4

How Do You Solve the Inequality 6x^2+5x < 4?

  • Jaco Viljoen
  • · Replies 4 ·
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4
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7

Linear combination and orthogonality

  • JulienB
  • · Replies 12 ·
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12

Determine components of a vector without knowing the angle

  • JulienB
  • · Replies 17 ·
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17

Missing a step in the proof of the BAC-CAB rule

  • JulienB
  • · Replies 2 ·
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2

Finding Log_a(100) given Log_a(2) = 20 and Log_a(5) = 30

  • Luis Melo
  • · Replies 3 ·
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3

Probablity Problem 1.3 From Statistical and Thermal Physics, Reif

  • thenewsteven
  • · Replies 12 ·
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12

What is the Equation for Combinations with Repetition in Combinatorics?

  • iScience
  • · Replies 5 ·
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5

Solving 3x⁴ + 5x³ + 3x² + 5x + 4 ≥ 0 without graphing

  • Ethan_Tab
  • · Replies 2 ·
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2

Finding a function that goes through given points

  • iScience
  • · Replies 2 ·
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2

System of equations with complex exponentials and constraints

  • Frank Einstein
  • · Replies 5 ·
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5

How do I solve absolute value inequalities involving polynomials?

  • moondaaay
  • · Replies 5 ·
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5

Solve Quadratic Inequality: x²-4x+3≤(3x+5)(2x-3)

  • moondaaay
  • · Replies 1 ·
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1

How Do You Calculate the Distance Between Adjacent Numbers on a Clock Face?

  • chaoseverlasting
  • · Replies 2 ·
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2

What Is the Yearly Growth Rate for a 40% Increase Over Three Years?

  • HaLAA
  • · Replies 8 ·
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8

Rewrite an even of N series as a function of N

  • Calpalned
  • · Replies 4 ·
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4

Arbitrary array of numbers, proof

  • Daltohn
  • · Replies 7 ·
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7

Geophyics equation, order of operation

  • Adam_9333
  • · Replies 4 ·
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4

Solve Supermarket Special Offer: $0.30 Reduction Price

  • icystrike
  • · Replies 3 ·
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3

Lapse rate, dry adiabats, moist adiabats

  • TheMathNoob
  • · Replies 5 ·
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5

Proving 2n ≤ 2^n for All Positive Integers n

  • The Subject
  • · Replies 11 ·
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11

Uncertainty Calculation for 6mV Input on Linear Force Measuring Device

  • pinkcashmere
  • · Replies 1 ·
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1

Solve for x: 2^3+2^3+2^3+2^3=2^x

  • LogarithmLuke
  • · Replies 3 ·
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3

Converting nanometres and microns to millimetres

  • Cliff Hanley
  • · Replies 3 ·
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3

Probability and Events (I don't quite understan the answer)

  • Matejxx1
  • · Replies 3 ·
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3

One solution to Trig Function, but what about the other(s)?

  • Ocata
  • · Replies 7 ·
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7

Expectation of a function of a continuous random variable

  • whitejac
  • · Replies 17 ·
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17

Is there a simpler way to solve this Venn diagram algebra problem?

  • chris2020
  • · Replies 3 ·
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3

Probability of No Mixed-Sex Rooms with 40 Randomly Assigned People

  • davon806
  • · Replies 12 ·
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12
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23

How Much Does Each Golf Ball Cost in This Algebra Problem?

  • ProjectTruth
  • · Replies 4 ·
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4
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8

Calculating Earth's Temperature Change from Increased Solar Constant

  • TheMathNoob
  • · Replies 8 ·
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8

Solve Simple Trig Problem: cosx - cosx*sinx = 1/3

  • Mddrill
  • · Replies 2 ·
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2

Does the angle bisector method prove every segment has a midpoint?

  • Bashyboy
  • · Replies 4 ·
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4

Problems about energy and dimension (checking my solutions)

  • TheMathNoob
  • · Replies 5 ·
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5

Finding angles of a parallelogram.

  • tiggertime
  • · Replies 5 ·
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5

Prove there is a perfect square between n and 2n

  • Panphobia
  • · Replies 24 ·
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24

Winning the Weekly Sports Club Draw

  • icystrike
  • · Replies 4 ·
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4

How many solutions does the equation have?

  • terryds
  • · Replies 6 ·
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6

Solve "Logic" Questions: Is Jed Right?

  • icystrike
  • · Replies 3 ·
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3

Unit Conversion of CO Concentration in Basement to Micro-gram/m^3

  • saructk
  • · Replies 1 ·
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1

What is the Impact of a Local Tourism Tax on Customer Satisfaction?

  • HaLAA
  • · Replies 12 ·
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12

What is the Inverse Cosine of a Squared Angle?

  • Mechaman
  • · Replies 5 ·
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5

'And' means 'Multiply' and 'Or' means 'Add'?

  • ajay.05
  • · Replies 7 ·
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7

Unit Vector Perp. to a: Solving Problem

  • WeiLoong
  • · Replies 2 ·
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2

Adding Degrees Minutes Seconds

  • coolguy16
  • · Replies 3 ·
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3

PDF's: Binomial Formula or Pascal's Formula

  • whitejac
  • · Replies 5 ·
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5

Is It Possible to Prove Logarithms Using Equations?

  • TheMathNoob
  • · Replies 7 ·
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7

What is the percentage of young people with psychosis due to cannabis use?

  • icystrike
  • · Replies 4 ·
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4

Factoring with the double angle formula for cosine

  • Mechaman
  • · Replies 1 ·
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1

How Can Students Be Arranged into Groups with Set Sizes?

  • Matejxx1
  • · Replies 12 ·
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12

Quadratic Inequality: Solving for x | No Quotes

  • icystrike
  • · Replies 4 ·
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4

Find the n value of a function

  • chwala
  • · Replies 23 ·
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23

Parametrization of implicit curve

  • nuuskur
  • · Replies 3 ·
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3

What is the Complex Angle for 2√(3)-2i?

  • guyttt
  • · Replies 4 ·
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4

How can the absolute value of x be negative?

  • Joseph1739
  • · Replies 7 ·
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7

Solve Double Cross Product Problem in $\mathbb{R}^3$

  • geoffrey159
  • · Replies 5 ·
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5

Significant figures and error rounding for volume calculation

  • Ian Mount
  • · Replies 5 ·
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5

Inequalities in Normal Distributions

  • Cpt Qwark
  • · Replies 2 ·
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2

Area of triangle on sphere problem.

  • toughcanesrock
  • · Replies 7 ·
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7

Binary search math, log base 2 (n) issues

  • ducmod
  • · Replies 9 ·
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9

Binary search tree, number of nodes formula

  • ducmod
  • · Replies 2 ·
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2

Solve Limit Problem: SQRT(-2)/(4-x) as x Approaches 4

  • Niaboc67
  • · Replies 5 ·
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5

Rational exponents (was: Math Discussion)

  • goolalklk
  • · Replies 5 ·
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5

How to know if this irrational function has no asymptotes?

  • Jeanclaud
  • · Replies 7 ·
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7

Calculating Inverse Functions for Hourly Salary and Production Units

  • Unichoran
  • · Replies 6 ·
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6

What are the Asymptotes of (X-5)/(X^2+X-6)?

  • theo12349
  • · Replies 9 ·
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9

Grade 12 Math (inverse of functions)

  • Ethan_Tab
  • · Replies 2 ·
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2

Transition Matrices - Worded Problem

  • mathsashelp
  • · Replies 3 ·
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3

Number Theory: Difference of Perfect Squares

  • S.R
  • · Replies 14 ·
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14