Register
Login
Information
This feature requires your approval of cookies
You can approve cookies in the notification bar at the top of this window
Information
This feature requires your approval of cookies
Home
Forum
^{+0}
Widgets
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
Yes I am 16 or older
Cookie Consent
I accept third party cookies used to show me
personalized
ads. I also accept that these cookies are used to share information about my use of this site with advertising providers who may combine it with other information that I have provided to them or that they’ve collected from my use of their services.
I accept strictly necessary cookies that guarantee functions without which I could not use this website as intended.
Configure
I accept all cookies
unlimited
sponsored calculations per hour
All Questions
^{+0}
157558 Questions
0
150
2
Sequence problem
The sequence is defined by
The sequence is defined by
Find
●
●
Guest
Aug 11, 2019
0
114
2
help
How many possible distinct arrangements are there of the letters in the word DOG?
●
●
Guest
Aug 11, 2019
0
125
1
Please help!!
In right triangle DEF, we have
●
Guest
Aug 11, 2019
0
162
2
+100
help
Let line be the graph of . Line is perpendicular to line and passes through the point . If line is the graph of the equation , then find .
●
●
BIGChungus
Aug 11, 2019
0
176
2
Vieta's formula problem
The roots of the polynomial x^3 - 52x^2 + 581x - k are distinct prime numbers. Find k.
●
●
Guest
Aug 11, 2019
0
103
1
Help
Let
What is p(p(1,-1),p(-5,-2))?
●
Guest
Aug 11, 2019
0
146
1
combining percents
Otto's investment portfolio consisted of shares of internet stock and copper stock. During the year, the value of his internet shares increased 10%,but the value of his copper shares decreased from $10,000 to $9,000. During the same year, the total
read more ..
●
Guest
Aug 11, 2019
0
153
1
Help
You have a rectangular prism box with length x+5 units, width x-5 units, and height x^2+25 units. For how many positive integer values of x is the volume of the box less than 700 units?
●
Guest
Aug 11, 2019
0
90
1
Help
Find the number of pairs of integers (x,y)
Must satify 0
●
Guest
Aug 11, 2019
0
154
3
any help will work
Find the equation whose graph is a parabola with vertex (2,4), vertical axis of symmetry, and contains the point (1,1). Express your answer in the form "ax^2+bx+c".
This should be very easy but I can't figure it out. Any help will
read more ..
●
●
●
Guest
Aug 11, 2019
0
168
3
Help. I am confused on this question.
The graph of the parabola defined by the equation y=-(x+1)^2+1 is shifted 1 unit to the right, then shifted 5 units down, then rotated 180 degrees about its vertex. The resulting parabola has zeros at x=a and x=b, where . What is b-a?
read more ..
●
●
●
Guest
Aug 11, 2019
0
147
2
Any help would be appreciated
The graph of an equation
sqrt((x-3)^2+(y+4)^2) + sqrt((x+5)^2+(y-8)^2)=20
read more ..
●
●
Guest
Aug 11, 2019
0
166
1
Math help please!!
Let f(x) be a quartic polynomial with integer coefficients and four integer roots. Suppose the constant term of f(x) is 6.
(a) Is it possible for x=3 to be a root of f(x)?
(b) Is it possible for x=3 to be a double root
read more ..
●
Guest
Aug 11, 2019
+1
163
2
+929
PSL4#52
Answer: 63
●
●
dgfgrafgdfge111
Aug 11, 2019
+1
164
2
+929
PSL3#47
Answer: 7/15
●
●
dgfgrafgdfge111
Aug 11, 2019
+1
171
3
+929
PSL3#42
Answer: 225
●
●
●
dgfgrafgdfge111
Aug 11, 2019
+1
161
2
+929
PSL3#33
Answer: 1760
●
●
dgfgrafgdfge111
Aug 11, 2019
+1
160
2
+929
PSL3#30
Answer: 288
●
●
dgfgrafgdfge111
Aug 11, 2019
0
164
4
+8
Difficult 3D Geometry Problem (CPhill please help)
Points A, B, C, and T are in space such that each of , , and is perpendicular to the other two. If TA = TB = 12 and TC = 6,then what is the distance from T to face ABC?
Any help is appreciated. Thanks a lot!
read more ..
●
●
●
●
SuperMathGuy
Aug 11, 2019
0
152
4
Help
Find the number of pairs of integers (x,y) with 0 \(\frac{1}{1-\frac{10}{x}} > 1 - \frac{5}{y}.\)
●
●
●
●
Guest
Aug 11, 2019
0
151
3
Help please
Let r, s, and t be the roots of the equation x^3 - 2x + 1 = 0 in some order. What is the maximal value of r^3 - s- t?
●
●
●
Guest
Aug 11, 2019
Aug 10, 2019
0
142
2
Floor function help
How many positive integers have the property that is odd?
●
●
Guest
Aug 10, 2019
0
181
1
Help
Find the maximum value of where
●
Guest
Aug 10, 2019
0
95
1
Help
Find the maximum value of where
●
Guest
Aug 10, 2019
0
156
4
Help. I have been stuck
Given that , , and , find .
I know that I should be able to do this but I can't figure it out.
●
●
●
●
Guest
Aug 10, 2019
«
latest
6301
6300
..
6082
6081
6080
6079
6078
..
2
1
»
6 Online Users
Top Users
+106943
Melody
moderator
+106532
CPhill
moderator
+28357
Alan
moderator
+23827
heureka
+19857
ElectricPavlov
+17909
geno3141
+11054
Omi67
moderator
+8842
hectictar
+8806
asinus
moderator
+7763
MaxWong
+6046
Rom
Sticky Topics
Has your answer tab disappeared ?
¤¤¤¤Welcome To Web2.0calc¤¤¤¤
How to display latex properly
Feature Questions 1 - Started 8th May 19
Filter Issues
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
https://www.desmos.com/calculator/bsh9ex1zxj
@ Is PROCRASTINATION a problem for you ?
@ Site full of printable puzzles.
Historical post!
What is happening? Wrap #4
Great Questions to Learn From 2
Great Answers to Learn From
Reference Material
Information for new people.