Precalculus Mathematics Homework Help Forum

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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.
Find the possible values of angle ##∠ADB##
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349
Determine the position vector of ##C##
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1
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297
Prove that these three ratios are equivalent
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11
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639
Adding square roots of ##i## leading to different answers!
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21
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489
Stumped by the algebraic steps in this equation
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5
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492
Vector addition and subtraction
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13
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596
Calculating Radius & Water Depth of a Spherical Bowl
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7
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1K
Evaluating the angle theta using inverse sin
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4
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482
Finding the solution to system of 3 equations with 3 unknowns
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2
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376
Complex numbers confusion (how they got this expression in orange to become -1)
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25
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1K
Conceptual question on equations of the form ##x=ay^2+by+c##
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5
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479
Form a Linear Equation for the Value of this equipment during the 10 years it will be in use
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3
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1K
Is it possible to find a number x such that 5 < x < 1?
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26
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755
If 1=5, 2=25, 3=125,4=1880, 5=?
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8
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2K
Number of lines equidistant from four points on a plane
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2
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660
Chance of Selecting Twins from Group of 30 [Solved!]
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24
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744
Plotting points in three-dimensional space
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8
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686
Trying to understand the property of absolute value inequality
2
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38
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1K
Using inverses to solve systems of equations
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4
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369
"Calculating Korifice Value in Cranes TP 410M, Problem 7-12
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6
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753
Solve 2 Triangle Problem: Calculate Exact Value of x
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7
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693
Is it ok to assume matrices A and B as identity matrix?
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25
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519
Find the GCD of the given complex numbers (Gaussian Integers)
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4
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691
Solving Equations: Does Squaring Make False True?
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20
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532
Proving inverse of a 2 x 2 matrix is really an inverse
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3
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380
Help with inverse matrix's
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3
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516
Problems in manipulating these 4 radical equations
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8
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571
Show that ##f(x)=2',1',2'## in the irreducible Polynomial
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8
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500
Transformations to both sides of a matrix equation
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25
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541
Is there a rule that states that I should not divide in this scenario?
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10
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388
Deriving algebraic definition of cross product
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12
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559
Free variables for a matrix in REF
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3
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611
Gauss-Jordan Elimination algorithm steps
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1
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337
Finding vectors parallel to a given vector
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5
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702
Identifying the type of expression
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3
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315
Finding the value of lambda so that two lines are parallel
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6
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510
Exploring the Math of Glucose Polymers: Understanding 6^n
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6
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483
Interchanging x and y for inverse function
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13
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944
Solving an Asymmetrical Inequalities Problem: Seeking Light
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29
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876
Cannot understand what ##(mod ~ \pi)## means in the given formula
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7
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400
Is ##f(x)=2^{x}-1## considered an exponential function?
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12
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705
Trig Identities - Pre-calculus in a Nutshell - Section 4 Question 1
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24
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2K
3x3 matrix with complex numbers
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18
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724
Inequality question -- Need help getting started...
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7
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436
Inequalities: x^2 > 900
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32
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880
Calculating the distance from a point to a plane
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1
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444
Complex fraction question
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9
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426
Solving a nested logarithmic equation
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2
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438
Find all the ways of writing N into x^2-y^2
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8
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506
!Solving Plane 3x + 2y -z = 4
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8
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749
Find the range of values of a + b
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6
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389
Help please with this Trigonometric equation
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4
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406
Find the coordinates of D which lies on the vector BC
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4
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427
Two roads meeting a river at different angles (heights and distances)
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7
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342
Why is this result different? (calculating the sides of a triangle)
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6
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381
Make ##x## the subject of the formula
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15
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503
Find the Area of the shaded region in the given problem
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1
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518
I don't understand this step in turning this negative into a positive
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6
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466
A formula involving the sum of cosines of the angles of a triangle
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6
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645
Algorithm problem involving 3 points and 3 lines in the x,y plane
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7
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655
Simplifying this complicated fraction
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6
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431
Finding the domain of a composite function
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10
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611
Prove that there are infinitely many primes of the form ## 6k+1 ##?
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12
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768
How to simplify 1/cuberoot(2)
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13
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604
Geometry: prove that point M is touched by 4 circles
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4
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630
Justifying Equilateral Triangle AEF in ABCD
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5
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551
Exploring Equation of a Straight Line in 3D Space
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17
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607
Solving a⁻¹ - b⁻¹ = b - a /(ab)
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13
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701
Calculating Left Hand Limit: ##\sqrt 6##
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17
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549
Find an equivalent equation involving trig functions
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4
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387
MHB Find this unknown angle in the triangle
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25
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1K
How to solve this log equation?
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5
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424
Find angle B in the trigonometry problem
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30
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2K
Solve the given trigonometry problem
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7
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692
Solve the given equation that involves fractional indices
2
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39
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2K
Finding the angle between two vectors
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2
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381
Solving an absolute value quadratic inequality
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9
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522
How to find z^n of a complex number
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12
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590
Probability of not getting a prize
2
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36
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1K
What are the implied domain and range of cos(arctan(x))?
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3
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837
Area of Quadrilateral inside a rectangle
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2
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534
Are both sample spaces the same or do they mean different things?
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5
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410
Geometry problem with arcs in a triangle
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16
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639
Writing a logarithm in a form not involving logarithms
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4
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682
Solve the given vector problem
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1
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431
Distance or displacement?
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7
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363
Quadratic inequalities with absolute values
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7
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544
Triangle formed by straight lines
2
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43
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2K
Need Aid On This Problem Set (Combinations of Month Numbers in 10 Years)
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17
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795
Formula for Xo and Yo for graph of quadratic function
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2
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493
Prove that ##AE=2BC## -Deductive Geometry
2
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52
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2K
Is it possible to find the range of this function?
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22
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733
Limit question to be done without using derivatives
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25
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578
Find the values of a and b in the given polynomial
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15
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985
Show that ##P(X=2)=\dfrac{2}{15}##
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7
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689
Choose a ball at random from a randomly selected box - alternative way
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10
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593
Do We Need Boundaries for Fraction Equations?
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21
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665
Quadratic equation: Which way is correct? pic1 or pic2?
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32
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746
Complex numbers problem |z| - iz = 1-2i
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20
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616
Finding a Mistake: Probability of Y with X and Spins
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4
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740

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