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
230700 Questions
0
491
1
arcsin(x) irrational if x (x!=0) is rational?
Is the arcsin of a rational number an irrational number? Like arcsin(3/5) ?
●
Guest
Feb 2, 2019
0
548
1
Trig identities need help
This is the equation: tan2x - tan2x * tan^2 x = 2
I used the double-angle identity for both tan2x’s, but I don’t know what to do from there. I think maybe factor, but I don’t know how I’d go about doing that. Help?
●
Guest
Feb 2, 2019
+1
1099
1
+166
help
How many distinct values are possible for the expression
if one set of parentheses may be placed in the expression?
read more ..
●
grif389
Feb 2, 2019
+1
782
1
+160
integer values for x such that the equation is a prime number
What are the integer values for x if you want this equation: | 4x^2 - 12x -27 | to be a prime number.
●
hearts123
Feb 2, 2019
+1
604
1
Your friend, Taylor, missed class today and needs some help identifying solutions to systems.
1.Your friend, Taylor, missed class today and needs some help identifying solutions to systems. Explain to Taylor how to find the solution(s) of any system using its graph.
2.Taylor graphs the system below on her graphing calculator
read more ..
●
Guest
Feb 2, 2019
-5
689
4
+73
Working Together Problems:
I'm trying to figure out this new formula. Can anybody show me how's it done?
●
●
●
●
GAMEMASTERX40
Feb 2, 2019
-5
771
4
+73
Find the roots/solutions/zeroes: 2
Find the roots/solutions/zeroes: Do number 82, 83, and 84.
●
●
●
●
GAMEMASTERX40
Feb 2, 2019
+1
849
4
+299
Please help Math
Factor each of the following completely.
1. 18x^2y^3+90x^3y
read more ..
●
●
●
●
Nerd123
Feb 2, 2019
0
630
1
Lol
My school's enrollment is 506 after a 10% increase. What was the school's enrollment before the increase?
●
Guest
Feb 2, 2019
0
700
1
Help!!!
(ABC) = 30 degrees (BCO) = 20 degrees (OCD) = 20 degrees How do I find (OCD)?
●
Guest
Feb 2, 2019
0
472
1
Help
what is 12x12x11+ the square root of 2? I am very confused
ElectricPavlov
●
Guest
Feb 2, 2019
0
458
1
plz help
http://prntscr.com/mfqqe5
●
Guest
Feb 2, 2019
0
433
2
can someone help explain this to me
i have seen explanations but i still dont get it :/
http://prntscr.com/mfqobt
●
●
Guest
Feb 2, 2019
0
2263
1
+62
Triangles ABC and DFG are given. Find the lengths of all other sides of these triangles if:
Triangles ABC and DFG are given. Find the lengths of all other sides of these triangles if:
Chapter Reference
b
∠A≅∠D, AB·DG=AC·DF, AC=7 cm, BC=15 cm, FG=20 cm, and DF-AB=3 cm
read more ..
●
TwentyFour
Feb 2, 2019
0
1400
1
Marbles
Mary has 40% fewer marbles than Jolie. If they combine all their marbles in a single bag, what percent of the marbles in the bag are Jolie's?
●
Guest
Feb 2, 2019
0
1476
1
I had a stroke
I'm at a bookstore with 35$ in my pocket and a 20% -off coupon. What is the cost of the most expensive book I can buy with my money and the coupon? (Assume that there are books of every possible price in the bookstore. It's a large bookstore!)
read more ..
Alan
●
Guest
Feb 2, 2019
0
678
2
Fortnite Sucks
An antique store increases all of its prices by 40%, and then announces a 25%-off-everything sale. What percent of the original prices (before the increase) is the new prices?
●
●
Guest
Feb 2, 2019
0
1180
1
How many times around would ten million dollar bills reach?
A dollar bill is 6.14 inches long. If you laid ten million dollar bills end-to-end (to clarify, two dollar bills laid end-to-end total 12.28 inches in length), how many times around Cincinnati's I-275 loop would the line of bills reach? The I-275 highway loop
read more ..
●
Guest
Feb 2, 2019
0
816
1
urgent help
If I have a 4x4 chess board, in how many ways can I place four distinct pawns on the board such that each column and row of the board contains no more than one pawn?
●
Guest
Feb 2, 2019
«
latest
9227
9226
..
5724
5723
5722
5721
5720
..
2
1
»
Post New Question
1 Online Users
Top Users
+128475
CPhill
moderator
+118609
Melody
moderator
+33616
Alan
moderator
+14921
asinus
moderator
+9519
MaxWong
+3144
admin
administrator
+2440
GingerAle
+1791
tomtom
+1679
wiseowl
+1553
bader
+1117
parmen
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.