If i have the four sides of an irregular quadrilateral without any angle or diagonal this formula can be use for calculating of area of this triangle $A=s...

I want start by saying that my math skills aren't great and I'm trying to learn. I took a look at square root. Squaring the number means x^2. An...

A six-sided die is rolled five times. What is the probability that only the final roll will be a deuce? I've tried to reason this out myself but I ca...

Let $U$ be an open set in $\mathbb R$. Then $U$ is a countable union of disjoint intervals. This question has probably been asked. However, I am not inter...

We have the following set of numbers $1,2\dots14$. a) How many subsets with 4 numbers can we find that contain only one even number b) How many subsets wi...

The question is: Using the numbers $1, 2, 3, 4,$ and $5$, how many $3$-digit combinations can you make? Repetitions are allowed. Thanks! Edit: I just watc...

I have the following question: Question: Find a linear factor that will fully factorise $x^3 - 2x^2 - 5x + 6$. When I checked the solutions the linear fac...

This question is equal parts math and physics, though I chose to ask it here because I am more concerned with the mathematics behind it, rather than physi...

Finding the fractional part of $\frac{5^{200}}{8}$. I've had this problem given to me (we're learning the Binomial Theorem and all.) So obviousl...

I am looking for an explicit computation of (or a reference to) the Fourier transform of the generalized function on $\mathbb{R}^3$ $$\frac{1}{|x|^2-1+i0}...