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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.
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Title
Given an integer, find the probability its cube ends in 111
May 29, 2022
Replies
19
Views
2K
How do you know how many solutions there are for z?
May 28, 2022
Replies
2
Views
1K
If ## a ## is an odd integer, then ## a^{2}\equiv 1\pmod {8} ##?
May 28, 2022
Replies
2
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2K
Show that ## (-13)^{n+1}\equiv (-13)^{n}+(-13)^{n-1}\pmod {181} ##?
May 27, 2022
Replies
1
Views
2K
For ## n\geq 1 ##, use congruence theory to establish....
May 27, 2022
Replies
3
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1K
Question about limits involving 1/x
May 27, 2022
Replies
10
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2K
For ## n\geq 1 ##, use congruence theory to establish....
May 26, 2022
Replies
1
Views
1K
For ## n\geq 1 ##, use congruence theory to establish....
May 26, 2022
Replies
2
Views
2K
For ## n\geq 1 ##, use congruence theory to establish?
May 26, 2022
Replies
2
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1K
Prove that the integer ## 53^{103}+103^{53} ## is divisible by....
May 25, 2022
Replies
1
Views
2K
What is the remainder when the following sum is divided by 4?
May 25, 2022
Replies
7
Views
2K
Solve the quadratic equation that involves sum and product
May 25, 2022
Replies
1
Views
2K
Find the two values of the common ratio- Geometric sequence
May 24, 2022
Replies
6
Views
2K
How to find the remainders when ## 2^{50} ## and ## 41^{65} ## are?
May 24, 2022
Replies
1
Views
805
Can a polynomial have an irrational coefficient?
May 23, 2022
Replies
36
Views
7K
How many positive integer solutions satisfy this equation?
May 23, 2022
Replies
43
Views
3K
Amount of money a player to receive
May 23, 2022
Replies
8
Views
1K
Prove Homothetic Triangles Concurrent: Ceva's Theorem
May 23, 2022
Replies
1
Views
2K
Show that ## a^2\equiv b^2 \mod n ## need not imply that ## a\equiv b \mod n ##
May 23, 2022
Replies
10
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3K
Volume of pyramid formed by center of 5 spheres inside a hemisphere
May 23, 2022
Replies
17
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2K
Why have these endpoints been excluded?
May 23, 2022
Replies
2
Views
856
Solve this problem that involves combinations
May 23, 2022
Replies
1
Views
1K
How Do You Calculate Permutations for Complex Problems?
May 23, 2022
Replies
1
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1K
How many quadrilaterals formed from n-gon no adjacent sides
May 22, 2022
Replies
22
Views
1K
Number of positive integer solutions for given equation
May 22, 2022
Replies
5
Views
2K
What is the relationship between random walks and destinations?
May 22, 2022
Replies
29
Views
2K
Solve this problem that involves the factor theorem
May 22, 2022
Replies
10
Views
1K
Evaluate ##\dfrac {x^\frac{3}{2}+xy}{xy-y^3}-\dfrac {\sqrt x}{\sqrt x -y}##
May 22, 2022
Replies
13
Views
2K
Prove the given equation that involves indices
May 22, 2022
Replies
14
Views
1K
Alternative Methods to Find Arithmetic Sequence's Common Ratio
May 22, 2022
Replies
13
Views
1K
Prove that ## gcd(a, n)=gcd(b, n) ##.
May 21, 2022
Replies
2
Views
2K
Solving this problem that involves the area of triangle
May 21, 2022
Replies
40
Views
4K
Show that 13 is the largest prime that can divide....
May 20, 2022
Replies
7
Views
2K
Prove that ## p_{n+3}^{2}<p_{n} p_{n+1} p_{n+2} ##
May 20, 2022
Replies
10
Views
1K
If ## p ## and ## p^{2}+8 ## are both prime numbers, prove that....
May 20, 2022
Replies
16
Views
3K
Use induction and the Bertrand conjecture to show that....
May 20, 2022
Replies
10
Views
2K
If ## n>1 ##, show that ## n ## is never a perfect square
May 20, 2022
Replies
49
Views
4K
Prove ## a/d\equiv b/d \mod n/d ##.
May 20, 2022
Replies
2
Views
1K
Length of AD inside a triangle ABC
May 20, 2022
Replies
5
Views
2K
Find how many points on a circle have an integer distance from other points
May 20, 2022
Replies
19
Views
2K
Prove the following assertion: ## ca\equiv cb \mod cn ##.
May 19, 2022
Replies
5
Views
1K
How Is E(S5) Calculated in a Poisson Process?
May 19, 2022
Replies
2
Views
1K
Prove the following assertion about modular arithmetic
May 18, 2022
Replies
1
Views
1K
Use Remainder theorem to find factors of ##(a-b)^3+(b-c)^3+(c-a)^3##
May 18, 2022
Replies
4
Views
2K
Probability of getting arithmetic sequence from 3 octahedron dice
May 18, 2022
Replies
11
Views
1K
Find the unknown values in the problem involving trigonometry graphs
May 11, 2022
Replies
13
Views
2K
Every integer greater than 5 is the sum of three primes?
May 6, 2022
Replies
4
Views
3K
Prove that the Goldbach conjecture that every even integer....
May 3, 2022
Replies
6
Views
2K
Markov processes (Weight Suspended equally by n Cables)
May 1, 2022
Replies
4
Views
1K
How many arrangements of these students on the committee?
Apr 30, 2022
Replies
3
Views
1K
For n>3, show that the integers n, n+2, n+4 cannot all be prime
Apr 27, 2022
Replies
27
Views
3K
How to calculate θ when you have sin(θ+α)
Apr 26, 2022
Replies
5
Views
2K
In 1752, Goldbach submitted the following conjecture to Euler?
Apr 26, 2022
Replies
12
Views
2K
Find the set of possible values of ##a## - Modulus Graph
Apr 25, 2022
Replies
7
Views
1K
Verify that the integers 1949 and 1951 are twin primes
Apr 23, 2022
Replies
8
Views
2K
Find all pairs of primes ## p ## and ## q ## satisfying ## p-q=3 ##.
Apr 22, 2022
Replies
2
Views
3K
Find the unknown values in the problem involving trigonometry graphs
Apr 21, 2022
Replies
4
Views
1K
Show that the sum of twin primes ## p ## and ## p+2 ## is divisible?
Apr 20, 2022
Replies
17
Views
3K
For ## n>1 ##, show that every prime divisor of ## n+1 ## is an odd integer
Apr 20, 2022
Replies
9
Views
2K
Interpreting Statistical Questions: Ice Hockey Player Diff.
Apr 18, 2022
Replies
5
Views
2K
Given that ## p\nmid n ## for all primes ## p\leq \sqrt[3]{n} ##
Apr 17, 2022
Replies
4
Views
2K
Prove that if ## n>2 ##, then there exists a prime ## p ## satisfying....
Apr 15, 2022
Replies
8
Views
4K
What is the Pattern for Finding the Missing Number in a Sequence?
Apr 14, 2022
Replies
6
Views
999
B: Calculate the distance between two points without using a coordinate system
Apr 14, 2022
Replies
20
Views
4K
Solve the problem involving linear programming
Apr 14, 2022
Replies
2
Views
2K
Calculate distance from a point 100m from a plane given two angles
Apr 13, 2022
Replies
3
Views
2K
Help Calculating Real Estate Tax
Apr 13, 2022
Replies
3
Views
3K
Confusing algebraic word problem
Apr 10, 2022
Replies
5
Views
2K
Some algebra I don't understand: Solve for R
Apr 9, 2022
Replies
5
Views
1K
Prove that ##S## is a subspace of ##V##
Apr 7, 2022
Replies
2
Views
1K
Show that any composite three-digit number must have a prime factor
Apr 7, 2022
Replies
9
Views
2K
Sum of Infinite Series: Finding the Value of S
Apr 6, 2022
Replies
10
Views
3K
The infinite limits of the probability transition matrix for Markov chain
Apr 4, 2022
Replies
24
Views
4K
Proof of the trig identities for half-angles
Apr 4, 2022
Replies
1
Views
1K
Find the area of the shaded region in the inscribed circle on square
Apr 3, 2022
Replies
30
Views
4K
Why does the author's answer for (b) and (c) differ from my answer of 1-0.1k?
Apr 2, 2022
Replies
3
Views
1K
Find the mode, median and mean of the number of children
Mar 25, 2022
Replies
7
Views
3K
Elements of Combinatorial Analysis
Mar 24, 2022
Replies
11
Views
3K
Is My Understanding of Poisson Distribution Correct for Different Area Sizes?
Mar 23, 2022
Replies
16
Views
2K
Finding the Area of a Sector using Trigonometric Functions
Mar 23, 2022
Replies
1
Views
1K
Need help with a question about powers of complex numbers
Mar 23, 2022
Replies
8
Views
1K
Choice, Chance and Sensible Logic
Mar 23, 2022
Replies
3
Views
1K
Find Co-ordinates of Point C in Problem Involving Straight Line Equations
Mar 23, 2022
Replies
2
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1K
Method of detached coefficients division
Mar 22, 2022
Replies
4
Views
3K
Correct statement related to confidence interval
Mar 22, 2022
Replies
4
Views
1K
Find the prime factorization of the integers 1234, 10140, and 36000?
Mar 19, 2022
Replies
2
Views
2K
Solve for x and y in the given algebra problem involving fractions
Mar 16, 2022
Replies
25
Views
3K
Find the minimum perimeter of a triangle with these constraints
Mar 14, 2022
Replies
4
Views
3K
Conditional probability of a test records this positive result
Mar 14, 2022
Replies
17
Views
2K
Find the value of ##5x+5y## in the given equation
Mar 12, 2022
Replies
10
Views
2K
Solve for x in this inequality problem
Mar 10, 2022
Replies
16
Views
2K
Find the percentage loss in the purchase and sale of bananas
Mar 10, 2022
Replies
11
Views
2K
Need help in manipulating rational absolute value inequalities
Mar 8, 2022
Replies
11
Views
2K
Could there have been another value for Pi?
Mar 7, 2022
Replies
13
Views
2K
Definition of multiplying fractions -- help please
Mar 5, 2022
Replies
3
Views
1K
I don't understand this problem -- Surface area of a section of a solid sphere
Mar 4, 2022
Replies
11
Views
3K
Algebra: distance from a fixed point
Mar 4, 2022
Replies
3
Views
1K
Investigating Linearity of Event Occurrences Over Time
Mar 3, 2022
Replies
1
Views
1K
Find order of rotational symmetry for the given shape
Mar 3, 2022
Replies
9
Views
3K
Can anyone please verify/review this counterexample?
Feb 28, 2022
Replies
30
Views
3K
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