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

How Do I Solve Linear Equations with Fractions and Word Problems in Algebra?

  • MATH DUMMY
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1

Find the number of points at which the diagonals intersect

  • vaishakh
  • · Replies 3 ·
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3

How Do You Calculate the Distance Between Two Vectors?

  • cscott
  • · Replies 3 ·
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3

Find Norm of Vector Subtraction w/o Using Formula

  • cscott
  • · Replies 4 ·
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4

Solving the Equation 3x^2+8xy-3y^2=1 - What's Next?

  • BlackJack
  • · Replies 1 ·
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1

Probability of 2+ Birthdays Matching in a Class of 25

  • six789
  • · Replies 3 ·
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3
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6

Find Inverse Function of y=xSqrt(-2x): Solution Here

  • Stun
  • · Replies 2 ·
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2

Simultaneous Eqns with exponents

  • cvr
  • · Replies 3 ·
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3

Finding annual effective rate of interest with semiannual loan payments

  • playboy
  • · Replies 3 ·
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3

Solving Trigonometry Problems Without a Calculator

  • dnt
  • · Replies 16 ·
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16

Limitations of Cramer's Rule in Solving Systems of Equations

  • hanhao
  • · Replies 5 ·
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5

Proving x in Sin(pi*cosx) = Cos(pi*sinx)

  • vaishakh
  • · Replies 4 ·
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4

Time dilation factor confusion

  • cd27
  • · Replies 6 ·
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6

Slope of Perpendicular Line to x - 3y = 9

  • AngelShare
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3

Proving Decreasing Terms in an Alternating Series

  • Benny
  • · Replies 3 ·
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3

Dividing a 5-Square Cross into 4 Equal Squares

  • vaishakh
  • · Replies 5 ·
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5

Find locus of midpoint in circle intersections

  • vaishakh
  • · Replies 2 ·
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2

Find Area of Rhombhus In Triangle ABC

  • vaishakh
  • · Replies 2 ·
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2

How Do You Solve for the Hypotenuse Using SOH CAH TOA?

  • PreciousJade
  • · Replies 5 ·
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5

How Does Base e Apply to Different Rates of Exponential Growth?

  • Atomos
  • · Replies 2 ·
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2

Prove the sine rule for a triangle

  • Sofia_S
  • · Replies 4 ·
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4

Locus of Midpoint of PAQ in Triangle Geometry

  • vaishakh
  • · Replies 3 ·
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3

Find angles in triangle ABC where AB = AC and AD = DB = BC

  • Natasha1
  • · Replies 1 ·
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1

Solving 4√(x-2) + 8 = 3√(x+6) - 5 for x

  • DB
  • · Replies 1 ·
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1

How Does the Quotient Property Relate to tan 0?

  • bryce postle
  • · Replies 3 ·
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3

Calculating Uncertainty for Radioactive Isotope Measurements

  • dimensionless
  • · Replies 1 ·
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1

Probability of drawing 4 A's, 2 B's, 2 C's, 1 D from 9 draws

  • Jibobo
  • · Replies 8 ·
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8

Finding range from graphs, inverse functions, and geometric series

  • Calavera
  • · Replies 4 ·
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4

Using the identities to find the vales of each expression

  • gator
  • · Replies 5 ·
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5

Logarithmic Function with Vertical Asymtote at X=-6, Y Intercept=5

  • merikukri
  • · Replies 6 ·
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6

Permutations of the number of players on a baseball team

  • six789
  • · Replies 18 ·
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18

How can I determine if two log functions are equivalent?

  • merikukri
  • · Replies 2 ·
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2

Find an algebraic function with domain [-6, 5) and range (-∞, 5]

  • merikukri
  • · Replies 1 ·
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1

Solving a heat balance equation for T using the quadratic formula

  • asdf1
  • · Replies 2 ·
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2

Which rational numbers between 0 and 1 have finite decimal expansions?

  • Natasha1
  • · Replies 14 ·
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14

Probability of sharing a birthday

  • locke
  • · Replies 1 ·
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1

For C(n, m), what values of n and m make C the largest?

  • asdf1
  • · Replies 2 ·
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2

Why are there 13×48 hands with four of a kind?

  • Cyrus
  • · Replies 6 ·
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6

How do I find the area below a curved graph?

  • interXdragon
  • · Replies 1 ·
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1

Solve the expression for n Є N

  • six789
  • · Replies 12 ·
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12

Solving 0 = -v.cos(2x) + sin(x).sqrt(v^2.[sin(x)]^2 + 2ah)

  • villiami
  • · Replies 5 ·
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5

Can You Mathematically Transform Sin(x) to Y=X?

  • Tido611
  • · Replies 3 ·
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3

2 Questions: Odds and Probability

  • mwang
  • · Replies 1 ·
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1

Proving Vector Equality without Dot Product - A Simple Method

  • square_imp
  • · Replies 2 ·
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2

Counting numbers greater than 300000 from digits 1,1,1,2,2,3

  • six789
  • · Replies 11 ·
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11

Solve Vector Equation 2x-(xdoti)i for x

  • square_imp
  • · Replies 5 ·
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5
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2
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33

Why does ((10-n)!)/((8-n)!) = (10-n)(9-n)?

  • Erzeon
  • · Replies 13 ·
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13
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14

Finding f(3) for a quadratic function with three known points

  • HappMatt
  • · Replies 5 ·
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5

Proving SA > (5)^(0.5) for ABCD Tetrahedron w/ Inscribed Sphere

  • klawesyn28
  • · Replies 10 ·
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10

Simplify the differential quotient for f(x) = 5x²

  • Izekid
  • · Replies 2 ·
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2

How do I multiply a vector by a scalar like 4?

  • DB
  • · Replies 10 ·
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10

Is rise over run the way you find slope?

  • Anika87
  • · Replies 2 ·
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2

Proving the sum formula 1+2+...+n using recurrence relations

  • S&S
  • · Replies 3 ·
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3

Simplifying/Re-arranging Troubles

  • caddyguy109
  • · Replies 6 ·
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6

Proving the Pythagorean Theorem for Inner Product Spaces

  • playboy
  • · Replies 10 ·
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10

Induction on an inequality involving sequences

  • Benny
  • · Replies 2 ·
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2

What is the equation of a line passing through (5,4) and (5,-6)?

  • AngelShare
  • · Replies 5 ·
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5

Linear regression and varience.

  • matthyaouw
  • · Replies 1 ·
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1

Finding Exact Value of Trig Function with Half-Angle Formula

  • Chop235
  • · Replies 2 ·
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2

Solve Tangent's Equation for y=6x-x^2 at (4,8)

  • Izekid
  • · Replies 6 ·
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6

(1+x)^2/x^6 doesn't simplify?

  • Pengwuino
  • · Replies 4 ·
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4

Something I should really know by now

  • joex444
  • · Replies 4 ·
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4

Using Partial Fractions to Simplify Summations

  • Natasha1
  • · Replies 4 ·
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4

Bored in math class again, so I made this

  • Blahness
  • · Replies 15 ·
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15

Is it possible to work out the centre of an ellipse?

  • Focus
  • · Replies 4 ·
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4
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3

Argument of Complex Number: Begin at (-3,2) - 135 Degrees

  • Solidmozza
  • · Replies 1 ·
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1

Finding N and P in a binomial distribution with mean 12 and SD 2.683

  • jimmie 88
  • · Replies 1 ·
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1

Why are both inscribed angles equal when they subtend the same arc?

  • blimkie
  • · Replies 4 ·
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4

Solving a System of Equations Without a Calculator

  • dragon513
  • · Replies 4 ·
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4

Using the identities to find the values of each expression

  • gator
  • · Replies 3 ·
Replies
3

How do i get to solve this integral,i have no idea whatsoever so no

  • latyph
  • · Replies 1 ·
Replies
1

Permutations are these not correct?

  • rocketboy
  • · Replies 6 ·
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6

Proving Identities and Double angles problems

  • sens_freak_18
  • · Replies 1 ·
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1

Linear programming constraints for running and cycling exercise

  • might hire
  • · Replies 2 ·
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2

Solving the 2\csc x + 3\sec x = -\sec x \tan x Equation

  • cscott
  • · Replies 6 ·
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6

Maclaurin Series for ln(1+e^x) and \frac{x}{(e^x-1)}

  • Bucky
  • · Replies 6 ·
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6

Symmetric difference of even integers and multiples of 3

  • Natasha1
  • · Replies 5 ·
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5

Solving (100)(.2)^x(.8)^(100-x)

  • jimmie 88
  • · Replies 1 ·
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1
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2

Formulating Curves: Techniques for Nonlinear Data Fitting

  • S&S
  • · Replies 4 ·
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4

What Is the Probability of Drawing a 2, 3, or 4 as the 13th Card?

  • jackbauer
  • · Replies 1 ·
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1

Prove G is injective iff f is surjective

  • S&S
  • · Replies 2 ·
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2

How to set up probability of numeric recurrence in lottery

  • ArfDogXYZ
  • · Replies 1 ·
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1

Distance to Gateway Arch and height of isosceles triangle tree

  • lorelyi328
  • · Replies 2 ·
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2

Applied Maths Mechanics (AS M1)

  • Ancient
  • · Replies 2 ·
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2

Internal Energy: gas inside piston

  • cokeaddict
  • · Replies 1 ·
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1

Just a quick one (Sets and Relations)

  • Natasha1
  • · Replies 1 ·
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1

Is the Algebraic Manipulation of Set Theory Expressions Accurate?

  • Natasha1
  • · Replies 1 ·
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1

How to calculate the odds of winning Lotto 6/49

  • whatdofisheat
  • · Replies 4 ·
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4

Solving z^2 + az+ (1+i)=0: Finding a Complex Solution

  • UnD
  • · Replies 1 ·
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1

Finding Tan without a calculator

  • lorelyi328
  • · Replies 9 ·
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9

When does (A∪B)∩C = A∪(B∩C) hold?

  • Natasha1
  • · Replies 5 ·
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5

Proving p is an equivalence relation on AxB

  • Natasha1
  • · Replies 2 ·
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2

Product of 11 numbers greater than 1 implies product of all 100 greater than 1

  • symplectic_manifold
  • · Replies 4 ·
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4

Equivalence classes and operations on ordered pairs representing integers

  • Natasha1
  • · Replies 3 ·
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3