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
12
1
help
Find all integers x for which there exists an integer y such that 1/x + 1/y = 1/7. In other words, find all ordered pairs of integers (x,y) that satisfy this equation, then enter just the x's from these pairs.
●
Guest
5 hours ago
0
8
1
Help please
What is the value of cos 0 given that (-2,9) is a point on the terminal side of 0?
●
Guest
5 hours ago
0
7
2
Trig questions
What is the value of sin 0 given that (-6,-8) is a point on the terminal side of 0?
●
●
Guest
5 hours ago
0
9
5
+6
Trig question
The line with equation -a+3b=0 conincides with the terminal side of an angle 0 (with a line through it) in standard position and sin 0 (line through it) < 0
What would the value of cos 0 (with a line through it)?
●
●
●
●
●
JohnLester1
5 hours ago
0
10
1
help please!
Find the polynomial p(x), with real coefficients, such that p(2) = 5 and p(x) p(y) = p(x) + p(y) + p(xy) - 2 or all real numbers x and y.
●
Guest
5 hours ago
0
9
1
need help now
The shape ABC is an triangle, AB = 64 mi, BC = 32.6 mi. Angle ABC is 74 degrees. Using the cosine rule, calculate the distance of AC
●
Guest
6 hours ago
0
9
1
help
Artie's dad's house is 21 ft tall. If Artie's dad is at the top of the house installing shingles, and his son Artie is on the ground 12 ft away from the base of his dad's house, what is the angle of depression from the top of the house to the spot where
read more ..
●
Guest
6 hours ago
0
8
1
help
A committee consisting of 4 faculty members and 5 students is to be formed. Every committee position has the same duties and voting rights. There are 8 faculty members and 15 students eligible to serve on the committee. In how many ways can the committee
read more ..
●
Guest
6 hours ago
0
9
1
help
A tank can be filled by one pump in 3.2 hours and by another pump in 80 minutes. A third pump can drain the tank in 2 hours and 20 minutes. If all 3 pumps go into operation, how long will it take to fill the tank?
●
Guest
7 hours ago
0
9
1
help
Yellow Cab Taxi charges a $1.75 flat rate for a ride in the cab. In addition to that, they charge $0.45 per mile. Katie has no more than $12 to spend on a ride. At most, how many miles can Katie travel without exceeding her spending limit?
●
Guest
7 hours ago
0
12
1
please help
Find area of the isosceles triangle formed by the vertex and the x-intercepts of parabola y=x^2+4x−12.
●
Guest
8 hours ago
0
10
2
help
How many distinct diagonals of a convex heptagon (7-sided polygon) can be drawn?
●
●
Guest
8 hours ago
0
11
1
help
A quadratic equation is given below.
2x² - 8x + c = y
If the graph of this quadratic equation has a minimum value at (2, 10), what is the value of c?
●
Guest
9 hours ago
0
11
1
please help!
Supposed you go to a conference attended by 20 canadians and 20 norwegians. How many people must you meet to be certain that you have met two people of the same nationality?
●
Guest
9 hours ago
0
7
1
help
Larry rides his bike at a rate of 8.8 inches per second. About how m any miles per hour can Larry ride his bike?
●
Guest
10 hours ago
0
15
3
+41
1988 USAMO Problem 5
Let $p(x)$ be the polynomial $(1-x)^a(1-x^2)^b(1-x^3)^c\cdots(1-x^{32})^k$, where $a, b, \cdots, k$ are integers. When expanded in powers of $x$, the coefficient of $x^1$ is $-2$ and the coefficients of $x^2$, $x^3$, ..., $x^{32}$ are all zero. Find $k$.
read more ..
●
●
●
USAMO2019
10 hours ago
0
8
1
need help on these
(b) A machine in a food canning factory produces 250 cans every hour. How many cans would be produced in 25 minutes?
(C) If 14 pens cost $5.60, find the cost of 3 pens.
●
Guest
10 hours ago
0
15
1
+679
simple question i am overthinking once again
general question: how do i even write equivalent expressions to like a given expression?
the question for example asks for an equivalent expression if you are given 5^4x-3
(sorry i did not know how to write that in latex)
i have tried this question
read more ..
●
Nirvana
11 hours ago
«
latest
15754
15753
..
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.