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
237673 Questions
+1
2204
1
Help?
A sodium vapor lamp emits photons with a wavelength of 5.89 X 10^-7m. What is the energy of these photons?
●
Guest
Oct 29, 2015
+1
468
1
help
what is x/3+pi(78.45) if x=4.19833
●
Guest
Oct 29, 2015
+5
587
1
factorise
4(x-y)-2(x-y)2
factorise
●
Guest
Oct 29, 2015
+5
680
1
-2(5/4-3/4)+5y=17
-2(5/4-3/4)+5y=17
heureka
●
Guest
Oct 29, 2015
+5
466
1
equation
9x10^9x 7.73x10^-9x4.54x10^-9 /1.87^2
●
Guest
Oct 29, 2015
+5
651
1
Homework
What is the value of 3ab+5b-6 when a=1 and b=3?
CPhill
●
Guest
Oct 29, 2015
+5
519
1
statistic question
what is 300000 over 64 971 858 in its simplest terms.
i would be so happy is some one could answer me in the shortest time possible
●
Guest
Oct 29, 2015
+5
610
1
Finding the value
3(17.5+11)* 10e-9/ 4* (5 *10e-9)* (220*10 e-9)^3)^0.5
heureka
●
Guest
Oct 29, 2015
+6
8
1719
6
+130544
CPhill's Challenge
Here's an old one that I ran across the other day.....I still think it's a nice problem.....
As seen below, a line is tangent to the parabola y = x^2 at C
read more ..
heureka
●
●
●
●
●
●
CPhill
Oct 29, 2015
+29
9
1181
0
+118724
@@ Wrap Lantern Thurs 29/10/15
The is called the Lantern Post because it lights the way to the "What is happening" thread
The "What is Happening" thread can be accessed directly. It is at the following address:
http://web2.0calc.com/questions/what-is-happening-wrap-4#r13
read more ..
Melody
Oct 29, 2015
+5
493
1
exponent help
how do I do exponent on calculator
●
Guest
Oct 29, 2015
+5
500
1
help
(1/8) to the power of 1/3
●
Guest
Oct 29, 2015
+5
514
2
try this see who can solve it first
A test has twenty questions worth 100 points. The test consists of True/False questions worth 3 points each and multiple choice questions worth 11 points each. How many multiple choice questions are on the test?
●
●
Guest
Oct 29, 2015
0
535
3
simple question
if an object was 2 kilograms and was travelling at the speed of 70 mile per hour then how high will the object be placed?
Melody
●
●
●
Guest
Oct 29, 2015
0
718
5
mm Hlpe
how to simplify (4 - 8x)(4 + 8x)
and also
read more ..
heureka
●
●
●
●
●
Guest
Oct 29, 2015
+5
637
1
trig function using graph utility
5sin(x+x)=4
Find solutions and round to two decimal places.
Melody
●
Guest
Oct 29, 2015
0
570
1
Algebra 1
What is l1-4kl>-11
●
Guest
Oct 29, 2015
0
464
1
help
what is "(2h^7)(7h)" simplified and expressed using exponents?
●
Guest
Oct 29, 2015
0
447
1
help
what is -4/2000 in a reduced fraction?
●
Guest
Oct 29, 2015
0
750
2
What does 10 93 mean?
What does 1093 mean?
●
●
Guest
Oct 29, 2015
0
609
2
4b-75=y 6b+45=y
4b-75=y 6b+45=y
whats the anwser
Melody
●
●
Guest
Oct 29, 2015
0
435
1
math
1.044 to the power of 1
●
Guest
Oct 29, 2015
«
latest
9505
9504
..
2299
2298
2297
2296
2295
..
2
1
»
Post New Question
2 Online Users
Top Users
+130544
CPhill
moderator
+33665
Alan
moderator
+15127
asinus
moderator
+2248
Bosco
+1808
blackpanther
+850
cooIcooIcooI17
+762
history
+448
HiylinLink
+267
CInsbstnkng
+114
ikleyn
+113
thatgirlaj
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.