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
232635 Questions
0
178
0
help with function
Let
f(x) = x^2 + 4 if x < 1
f(x) = 13x if x >= 1
What is f(f(f(17)))?
read more ..
Guest
Aug 25, 2021
0
285
1
Help!!!!!
a) How many ways are there to divide a red bracelet, a yellow bracelet, a green bracelet, and a black bracelet among 4 people if each person must receive exactly 1 of the bracelets?
b) How many ways are there to divide a red
read more ..
●
Guest
Aug 25, 2021
0
350
1
+83
translating phrases
a times b whole cube
●
smasai1
Aug 25, 2021
0
330
1
Help!!!!
a) How many multiples of 6 are between 100 and 500?
c) How many different integers between 100 and 500 are multiples of either 6, 8, or both?
●
Guest
Aug 25, 2021
0
645
2
+56
More help this one is hard
Circles centered at $A$ and $B$ each have radius 2. Point $O$ is the midpoint of $\overline{AB}$, and $OA = 2\sqrt2$. Segments $OC$ and $OD$ are tangent to the circles centered at $A$ and $B$, respectively, and $\overline{EF}$ is a common tangent. What
read more ..
●
●
LaTeX
Aug 25, 2021
0
388
1
+56
Help
Centers of adjacent faces of a unit cube are connected to form a regular octahedron. What is the volume of this octahedron?
●
LaTeX
Aug 25, 2021
0
379
1
I need help with, sorry to trouble
Ali, Ben, Charles and Dave had some stickers. Ali and Ben had a total of 17 stickers. Ben and Charles had 16 stickers in all. The product of the number of Ali's stickers and the number of Charles' stickers was 30. Given that Ali had as many stickers
read more ..
●
Guest
Aug 25, 2021
0
236
1
Help
Let $a_1,$ $a_2,$ $\dots$ be a sequence of real numbers such that for all positive integers $n,$ \[\sum_{k = 1}^n a_k \left( \frac{k}{n} \right)^2 = 1.\]Find the smallest $n$ such that $a_n < \frac{1}{2018}.$
●
Guest
Aug 25, 2021
0
359
1
Algebra
If 1 <= a <= 2 and 1 <= b <= 2, what is the least possible value of (a + b)(b - a)? Express your answer as a common fraction.
●
Guest
Aug 25, 2021
0
369
1
Algebra
Given that the polynomial x^2 - kx + 18 has only positive integer roots, find the average of all distinct possibilities for k.
●
Guest
Aug 25, 2021
0
346
1
Algebra
Let a and b be the roots of 2x^2+17x+11=0. Find ab+a+b
●
Guest
Aug 25, 2021
0
347
3
Hello
Jacob had 426 more bottle caps than Isaac. Jacob then gave
Isaac 246 bottle caps.
(a) How many more bottle caps did Isaac have than Jacob in
the end?
read more ..
●
●
●
Guest
Aug 25, 2021
0
233
1
sequence
Consider the sequence 1, 2, 1, 2, 2, 1, 2, 2, 2, 1, 2, 2, 2, 2, 1, ...
What is the sum of the first 100 terms of this sequence?
●
Guest
Aug 25, 2021
0
244
1
help algebra
Two runners start running at the same time from the start/finish line of a 400 meter oval track. One runner run laps of 1 minute 15 seconds and the other runs laps of 1 minute 45 seconds. How long will it be before the runners cross the start/finish line
read more ..
●
Guest
Aug 25, 2021
0
414
3
+4
The 6 sided die
An ordinary 6-sided die has a number on each face from 1 to 6 (each number appears on one face). How many ways can I paint two faces of a die blue, so that the product of the numbers on the painted faces isn't equal to 6?
There are
read more ..
●
●
●
SubscribeToJJGaming
Aug 25, 2021
0
416
1
+68
ill give all the hearts if someone can answer this
What are the fourth roots of 2√3−2i ? Enter the roots in order of increasing angle measure.
___cis(___)
read more ..
●
lendsey
Aug 25, 2021
+1
463
4
+47
I have the answer but feel free to answer it for fun
What is the minimum number of small squares that must be colored black so that a line of symmetry lies on the diagonal of square?
read more ..
●
●
●
●
SmartCookiezZ
Aug 25, 2021
0
370
1
What is the volume of a rectangular prims with height 6 in and base dimensions 5 in and 7 in?
What is the volume of a rectangular prims with height 6 in and base dimensions 5 in and 7 in?
●
Guest
Aug 25, 2021
-1
2564
3
+73
Write the interval of points that are less than -4:
1. Write the interval of points that are less than -4:
2. Write the set of points from -5 to 2 but excluding -1 and 2 as a union
read more ..
●
●
●
GAMEMASTERX40
Aug 25, 2021
-1
450
6
Help Me SmartCookieZ
Jean spent 3/7 of her money on 2 cupcakes and 8 sardine pies, and 3/4 of the remaining money on 3 pandan cakes. Each cupcake cost twice as much as a sardine pie. Each pandan cake cost $4.50 more than a cupcake. How much did she spend altogether?
<
read more ..
●
●
●
●
●
●
Guest
Aug 25, 2021
0
430
8
Help plz I really need it
Jeraine spent 1/10 of her money to buy 8 erasers and 3 pencils.
The cost of 1 pencil was twice the cost of 1 eraser.
She bought more erasers with 1/3 of her remaining money.
(a) How many erasers can Jeraine buy with 1/10 of her
read more ..
●
●
●
●
●
●
●
●
Guest
Aug 25, 2021
0
242
1
Investment
Thomas invest 10,000 dollars in the stock market. He lost 1.5% each year. To the nearest hundredth, how much did he have after 15 years?
●
Guest
Aug 25, 2021
0
390
1
Solve 11kx + 13kx =6 for x
Solve 11kx + 13kx =6 for x
●
Guest
Aug 25, 2021
0
336
2
Algebra
How many pounds of coffee worth 10 dollars a pound should be added to 20 pounds of coffee worth 4 dollars a pound to get a mixture worth 5 dollars a pound
●
●
Guest
Aug 25, 2021
0
358
2
help plz
in quadrilateral abcd each of the side lengths is an integer, and ad=bc. have ab:ad=2:5 and ad:cd=3:4, then what is the smallest possible perimeter of the quadrilateral?
●
●
Guest
Aug 25, 2021
«
latest
9304
9303
..
7943
7942
7941
7940
7939
..
2
1
»
Post New Question
2 Online Users
Top Users
+129526
CPhill
moderator
+118625
Melody
moderator
+33616
Alan
moderator
+14965
asinus
moderator
+12530
Omi67
moderator
+3144
admin
administrator
+2468
GingerAle
+1975
saseflower
+1847
tomtom
+1756
LiIIiam0216
+1656
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.