Register
Login
Username
Password
Login
forgot your password?
Home
Forum
+0
Formulary
Maths
Help
Complex Numbers
Integral Calculus
Differential Calculus
Equations
Graphs
Linear Algebra
Number theory
Percent
Standard Functions
Statistics
Trigonometry
Unit Conversion
Units
About
Imprint
Privacy Policy
Terms of Service
Credits
Google+
Facebook
Contact Email
Post New Question
All Questions
+0
235690 Questions
0
6
1
+250
Geometry
The number of diagonals in a certain regular polygon is equal to $2$ times the number of sides. How many sides does this polygon have?
●
MEMEG0D
Sep 2, 2024
0
4
1
+1222
Geometry
Two regular pentagons and a regular decagon, all with the same side length, can completely surround a point, as shown.
An equilateral triangle, a regular dodecagon, and a regular -gon, all with the same side length, also completely
read more ..
●
learnmgcat
Sep 2, 2024
0
10
0
+1222
Geometry
A regular hexagon has a perimeter of $p$ (in length units) and an area of $A$ (in square units). If $A = 3,$ then find the side length of the hexagon.
learnmgcat
Sep 2, 2024
0
7
0
+952
Number Theory
Find the six-digit number abcdef such that
0.\overline{abcdef} = \frac{2}{17},
without a calculator.
Hi6942O
Sep 2, 2024
Sep 1, 2024
0
2
1
+1443
Geometry
A rectangle contains a strip of width $1,$ as shown below. Find the area of the strip.
●
blackpanther
Sep 1, 2024
0
2
0
+1443
Geometry
Point $P$ is on side $\overline{AC}$ of triangle $ABC$ such that $\angle APB =\angle PBA$, and $\angle ABC - \angle ACB = 24^\circ$. Find $\angle PBC$ in degrees.
blackpanther
Sep 1, 2024
0
5
0
+822
Counting
In how many ways can you distribute $8$ indistinguishable balls among $5$ distinguishable boxes, if at least three of the boxes must be empty?
gnistory
Sep 1, 2024
0
9
0
+822
Counting
Miyu is giving out $8$ identical chocolates to her $5$ friends, including Dhruv. All possible distributions are equally likely. What is the probability that Dhruv gets at least $6$ chocolates?
gnistory
Sep 1, 2024
+1
3
2
+77
Hard Algebra Question, Please Help!
How many integers n with can be written as for at least one ordered pair of positive integers (a,b)?
Thanks a lot!
●
●
NotLatePY
Sep 1, 2024
0
7
2
+1439
Geometry
Point D is the midpoint of median AM of triangle ABC. Point E is the midpoint of AB, and point T is the intersection of BD and ME. Find the area of triangle BEC if [ABC] = 14.
●
●
kittykat
Sep 1, 2024
0
8
1
+1439
Geometry
In triangle $ABC$, $\angle ABC = 90^\circ$, and $D$ is on side $\overline{BC}$ such that $\overline{AD}$ bisects $\angle BAC$. If $AB = 4,$ $BC = 3$, and $AC = 5,$ then find the area of $\triangle ADC$. Round your answer to the nearest integer.
●
kittykat
Sep 1, 2024
+1
3
0
+1439
Geometry
In triangle $ABC$, let the perpendicular bisector of $BC$ intersect $BC$ and $AC$ at $D$ and $E$, respectively. If $BC = 20$ and $\angle C = 15^\circ$, then find the length of $BE$.
kittykat
Sep 1, 2024
+2
2
2
+50
Umm, how do I do this...
So how do I ask an off topic question, also here is a problem for anyone who comes to this unfortunate post.
DEBUG THIS
x=y
x^2=xy
read more ..
●
●
AUnVerifiedTaxPayer
Sep 1, 2024
Aug 31, 2024
0
9
0
+822
Counting
North High School has a math club and a science club. There are a students in the math club and b students who are members of both clubs. The total number of students is c. Find an expression for the total number of students who are in the math club or
read more ..
gnistory
Aug 31, 2024
0
2
1
+829
Number Theory
When fractions are expressed in different bases, they can be terminating or repeating. For example, when $\frac{1}{5}$ is expressed in base $3,$ the result is
\[0.\overline{0121}_3 = 0.01210121 \dots,\]
which is repeating.
When
read more ..
●
AnswerscorrectIy
Aug 31, 2024
0
9
2
+77
Jones Tax System
Dr. Jones lives in a country with a progressive tax system. That is, he does not pay any taxes on the first $20,000 in income he makes, he pays 5% taxes on the next $25,000, he pays 10% taxes on the next $35,000, he pays 15% on the next $50,000, and
read more ..
●
●
NotLatePY
Aug 31, 2024
0
3
1
+279
Number Theory
Find the $4000$th digit following the decimal point in the expansion of $\frac{1}{17}$
●
fjeihqoO
Aug 31, 2024
-1
5
1
+207
Geometry
Let $WXYZ$ be a trapezoid with bases $\overline{XY}$ and $\overline{WZ}$. In this trapezoid, $\angle ZXW = 120^\circ$, $\angle XWZ = 60^\circ$, and $\angle XYZ = 120^\circ$. Find $\angle YXZ$, in degrees.
●
BRAlNBOLT
Aug 31, 2024
0
6
2
+35
number theory help
The primes 3, 5, and 17 have the property such that their quadratic nonresidues are also primitive roots. Find the next two primes with this same property.
●
●
dplostthegame
Aug 31, 2024
0
11
1
+253
Algebra
Let $f$ be a cubic polynomial such that $f(0) = 0$, $f(1) = 0$, $f(2) = 0$, and $f(3)=0$. What is the sum of the coefficients of $f$?
●
jaekg
Aug 31, 2024
«
latest
9426
9425
..
9379
9378
9377
9376
9375
..
2
1
»
Post New Question
3 Online Users
Top Users
+37159
ElectricPavlov
+33659
Alan
moderator
+15001
asinus
moderator
+9673
MaxWong
+2490
GingerAle
+1897
NotThatSmart
+1839
ABJeIIy
+1768
bader
+1533
parmen
+1443
blackpanther
+1439
kittykat
Sticky Topics
Some guidelines for question askers.
What is Happening 5
Again a number puzzle. Multiply in writing.
Loads of fun printable number and logic puzzles
¤¤¤¤Welcome To Web2.0calc¤¤¤¤
How to display latex properly
Feature Questions 1 - Started 8th May 19
How to upload a picture.
If a question is ticked that does not mean you cannot continue it.
Should you consider anything before you answer a question?
Geometry Thread
PUZZLES
LaTex Coding
/calculator/bsh9ex1zxj
Historical post!
What is happening? Wrap #4
Great Questions to Learn From 2
Great Answers to Learn From
Reference Material
Information for new people.