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
236009 Questions
0
9
0
+1310
Geometry
In quadrilateral $BCED$, sides $\overline{BD}$ and $\overline{CE}$ are extended past $B$ and $C$, respectively, to meet at point $A$. If $BD = 8$, $BC = 3$, $CE = 1$, $AC = 19$ and $AB = 13$, then what is $DE$?
learnmgcat
Oct 5, 2024
0
9
0
+1310
Geometry
In square ABCD, P is on BC such that BP = 4 and PC = 1, and Q is on line CD such that DQ = 2 and QC = 3. Find sin angle PAQ.
learnmgcat
Oct 5, 2024
0
6
1
+23
Probability Problem
Six teams play a single round-robin tournament, in which each team plays every other team exactly once, there are no ties, and for each team, the probability of winning any given game is 1/2. What is the probability that at least two different teams
read more ..
●
Halplz
Oct 5, 2024
0
6
1
+846
Geometry
The interior angles of a polygon form an arithmetic sequence. The difference between the largest angle and smallest angle is $56^\circ$. If the polygon has $3$ sides, then find the smallest angle, in degrees.
●
magenta
Oct 5, 2024
0
8
1
+846
Geometry
Let $IJKLMN$ be a hexagon with side lengths $IJ = LM = 3,$ $JK = MN = 3,$ and $KL = NI = 3$. Also, all the interior angles of the hexagon are equal. Find the area of hexagon $IJKLMN$.
●
magenta
Oct 5, 2024
0
10
0
+846
Geometry
The tangent to the circumcircle of triangle $WXY$ at $X$ is drawn, and the line through $W$ that is parallel to this tangent intersects $\overline{XY}$ at $Z.$ If $XY = 15$ and $WY = 10,$ find $WX.$
magenta
Oct 5, 2024
Oct 4, 2024
0
9
2
+893
Number Theory
What is the greatest prime factor of the sum of the arithmetic sequence 1 + 2 + 3?
●
●
AnswerscorrectIy
Oct 4, 2024
0
6
1
+893
Number Theory
The product of two positive integers minus their sum is 39. The integers are relatively prime, and each is less than 2. What is the sum of the two integers?
●
AnswerscorrectIy
Oct 4, 2024
0
10
0
+1839
Geometry
What is the area of the region defined by the equation $x^2+y^2 - 7 = 4y-14x+2x-6y+3$?
ABJeIIy
Oct 4, 2024
0
7
1
+1839
Geometry
For what value of $c$ will the circle with equation $x^2 - 10x + y^2 + 10y + c = 0$ have a radius of length 1?
●
ABJeIIy
Oct 4, 2024
0
6
1
+785
Counting
Suppose we have a bag with 10 slips of paper in it. Eight slips have a 3 on them and the other two have an 8 on them.
a) What is the expected value of the number shown when we draw a single slip of paper?
b) What is
read more ..
●
gnistory
Oct 4, 2024
0
10
0
+785
Counting
In the Olympic women's skating competition, the gold medal goes to first place, silver to second, and bronze to third. If there are 19 skaters, including 2 Americans and 5 Canadians, in how many ways can the medals be awarded to three of the 19 skaters
read more ..
gnistory
Oct 4, 2024
+1
8
1
+280
Geometry
Let be a regular polygon. A rotation centered at with an angle of takes to . Given that , find in degrees
●
ABJelly
Oct 4, 2024
0
10
0
+363
Geometry
In triangle $ABC,$ $BC = 32,$ $\tan B = \frac{3}{5},$ and $\tan C = \frac{1}{4}.$ Find the area of the triangle.
MeIdHunter
Oct 4, 2024
0
10
0
+363
Geometry
In triangle $ABC,$ $AB = 3,$ $AC = 5,$ $BC = 7,$ and $D$ lies on $\overline{BC}$ such that $\overline{AD}$ bisects $\angle BAC.$ Find $\cos \angle BAD.$
MeIdHunter
Oct 4, 2024
0
11
0
+363
Geometry
What are the coordinates of the points where the graphs of f(x)=x^3 + x^2 - 3x + 5 and g(x) = x^3 + 2x^2 intersect?
Give your answer as a list of points separated by commas, with the points ordered such that their -coordinates
read more ..
MeIdHunter
Oct 4, 2024
0
4
2
+1455
Geometry
A circle is inscribed in a quarter-circle, as shown below. If the radius of the quarter-circle is $4,$ then find the radius of the circle.
●
●
kittykat
Oct 4, 2024
0
7
1
+1455
Geometry
Two circles are externally tangent at T. The line AB is a common external tangent to the two circles, and P is the foot of the altitude from T to line AB. Find the length AB.
●
kittykat
Oct 4, 2024
0
10
0
+1455
Geometry
Chords UV, WX, and YZ of a circle are parallel. The distance between chords UV and WX is 1, and the distance between chords WX and YZ is also 1. If UV =6 and YZ = 4, then find WX.
kittykat
Oct 4, 2024
0
6
0
+1455
Geometry
Let P_1 P_2 P_3 \dotsb P_{10} be a regular polygon inscribed in a circle with radius $1.$ Compute
P_1 P_2 + P_2 P_3 + P_3 P_4 + \dots + P_9 P_{10} + P_{10} P_1
kittykat
Oct 4, 2024
0
9
0
+976
Algebra
Let $a$ and $b$ be real numbers, where $a < b$, and let $A = (a,a^2)$ and $B = (b,b^2)$. The line $\overline{AB}$ (meaning the unique line that contains the point $A$ and the point $B$) has slope $2$. Find $a + b$.
Hi6942O
Oct 4, 2024
«
latest
9439
9438
..
9399
9398
9397
9396
9395
..
2
1
»
Post New Question
2 Online Users
Top Users
+129898
CPhill
moderator
+118680
Melody
moderator
+37152
ElectricPavlov
+33661
Alan
moderator
+15000
asinus
moderator
+2511
GingerAle
+2499
Solveit
+1938
NotThatSmart
+1557
parmen
+1505
blackpanther
+1455
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.