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
234927 Questions
0
242
1
Geometry
Luann has a platter made out of a square, with semicircles of diameter 12 inches on each edge, as shown. What is the side length of the smallest square that can contain the platter, in inches?
read more ..
●
Guest
Oct 3, 2021
0
369
2
PLS ANSWER YOU FORGOT
https://web2.0calc.com/questions/pls-help-tq_1
●
●
Guest
Oct 3, 2021
0
260
2
HELP PLS AND TY
I need major help with this math problem and if you can help me asap, that would be amazing.
read more ..
●
●
Guest
Oct 3, 2021
0
252
1
Counting
How many numbers from 1 to 125 are perfect powers? (A perfect power is a number of the form a^b, where a > 1 and b > 1.)
●
Guest
Oct 3, 2021
0
258
1
Counting
In how many ways can you spell the word FOOT in the grid below? You can start on any letter F, then on each step you can step one letter in any direction (up, down, left, right, or diagonal)
\begin{array}{cccc} F & F &
read more ..
●
Guest
Oct 3, 2021
0
329
2
Counting
1. Nine points are arranged in a 3 x 3 grid, as shown below. In how many different ways can you choose three points, so that they form a triangle?
read more ..
●
●
Guest
Oct 3, 2021
0
373
3
help please
The Cookie Monster encounters a cookie whose boundary is the equation $x^2+y^2 - 6 = 6x + 2 y$ and is very confused. He wants to know if this cookie is a lunch-sized cookie or a snack-sized cookie. What is the radius of this cookie?
●
●
●
Guest
Oct 3, 2021
0
286
1
quick problem
Let $ABCDE$ be a pentagon inscribed in a circle such that $AB = CD = 3$, $BC = DE = 10$, and $AE= 14$. The sum of the lengths of all diagonals of $ABCDE$ is equal to $\frac{m}{n}$, where $m$ and $n$ are relatively prime positive integers. What is $m+n$
read more ..
●
Guest
Oct 3, 2021
0
314
1
Counting question
Find what percent of the perfect squares less than 1000 that ends in a 1. (Don't forget that zero is a perfect square.)
●
Guest
Oct 3, 2021
0
352
2
why is cphil gone?
I recently noticed that CPhil got removed from top users... is he ok?
●
●
Guest
Oct 3, 2021
0
213
0
help im stuck
Show that if a, b, c, and d are positive numbers such that a + b = c + d = 10 and a and b are farther apart than c and d, then ab < cd.
Right now i know that ab = a(10-a) and cd = c(10-c), but i dont know how i should continue
read more ..
Guest
Oct 3, 2021
0
385
1
Coordinates
The pentagon ABCDE is graphed on a coordinate plane with vertices A(0, 0), B(3, 5), C(3, 8), D(8, 5), and E(8, 0). What is the pentagon's area?
●
Guest
Oct 3, 2021
0
336
1
help geometry
In a certain isosceles right triangle, the altitude to the hypotenuse has length 8. What is the area of the triangle?
●
Guest
Oct 3, 2021
0
212
0
need NT help
What is the sum of all positive integers n that satisfy lcm[n,100]=gcd(n,100)+200?
Guest
Oct 3, 2021
0
341
1
Circle equation
A circle has centre (0,0). The point (15,9) is a point on the circle. Find the equation of the circle.
●
Guest
Oct 3, 2021
0
362
1
Function
A function is defined by f(0) = 0 and f(n) = f(n - 1) + 2n + 1 for n > 0. Find f(4).
●
Guest
Oct 3, 2021
0
411
2
Number Theory
Find the largest integer n for which 12^n evenly divides 20.
catmg
●
●
Guest
Oct 3, 2021
Oct 2, 2021
0
359
1
test scores
Natasha wants to average at least 90% in math class. Her test scores so far are 94%, 89%, 88%, 92% and 85%. What score does she need on her next test to reach her goal?
●
Guest
Oct 2, 2021
0
413
1
tysmm
David, Peter and Andrew shared a bag of sugared buns. David took
1/2 the bag of sugared buns and half a bun. Peter took 1/2 the remaining bag
of sugared buns and half a bun. Andrew took the rest. If Andrew
received
read more ..
●
Guest
Oct 2, 2021
0
453
10
Pls help. Tq
A total of 420 green marbles and red marbles were put into Box A
and Box B respectively. There were 1 1/2 times as many red marbles as
green marbles. Some yellow marbles were put into Box B. For every
3 green marbles
read more ..
●
●
●
●
●
●
●
●
●
●
Guest
Oct 2, 2021
0
335
1
Algebra
The quadratic 3x^2-24x+72 can be written in the form a(x+b)^2+c, where a, b, and c are constants. What is a+b+c?
●
Guest
Oct 2, 2021
0
323
1
Exponents
If 5^x=100, what is the value of 5^(2x)?
●
Guest
Oct 2, 2021
0
200
0
help algebra
Find the constant term in the expansion of
\[\left( 2z - \frac{1}{z} \right)^{10}.\]
Guest
Oct 2, 2021
«
latest
9396
9395
..
8012
8011
8010
8009
8008
..
2
1
»
Post New Question
0 Online Users
Top Users
+118658
Melody
moderator
+37091
ElectricPavlov
+33653
Alan
moderator
+14985
asinus
moderator
+5265
rarinstraw1195
+3146
admin
administrator
+2653
LiIIiam0216
+2489
GingerAle
+1911
tomtom
+1837
NotThatSmart
+1758
bader
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.