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
234787 Questions
+3
1643
4
+2353
Math riddle
Aaah good old times.
Since it's pretty quiet on the forum, I thought I'd find us all a nice riddle.
I was cruising through the pile of easier ones when I found this one.
Still haven't found the answer
read more ..
rosala
●
●
●
●
reinout-g
Sep 10, 2014
+3
910
4
+2353
Disappearing tabs
Not sure if there are more people that have this problem, so that's why I started a thread.
My tabs keep disappearing, which makes it more difficult to return to the forum main page.
Is there anyone else experiencing these issues?
read more ..
Melody
●
●
●
●
reinout-g
Sep 10, 2014
0
381
1
whats 1 divide by 3
whats 1 divide by 3
●
Guest
Sep 10, 2014
0
810
5
Trigonometry
1.Find two real numbers whose sume is 4 and whose product is a maximum.
2.The height h in feet if a ball t seconds after being tossed upwards is given by the function h(t)=84t-16t squared.
a. After how many seconds will it hit the ground?
read more ..
reinout-g
●
●
●
●
●
Guest
Sep 10, 2014
+3
654
4
What property is shown below? 4 × (4 - 3) = (4 × 4) - (4 × 3)
What property is shown below? 4 × (4 - 3) = (4 × 4) - (4 × 3)
reinout-g
●
●
●
●
Guest
Sep 10, 2014
0
577
1
Word Problems Involving Quadratic Functions
Find two real numbers whose sume is 4 and whose product is a maximum.
CPhill
●
Guest
Sep 10, 2014
+5
626
1
+118654
@ I have cursorily checked all posts up to and including question page 688+ and answer page 1867+
@ I have cursorily checked all posts up to and including question page 688+ and answer page 1867+
They all (almost all) appear to have received a satisfactory answer.
(That doesn't mean that there can't be errors of course
read more ..
●
Melody
Sep 10, 2014
+6
501
0
+118654
There are a couple of questions that didn't post properly and as a consequence are not answered.
There are a couple of questions that didn't post properly and as a consequence are not answered.
Here they are.
http://web2.0calc.com/questions/nbsp_4#r0
http://web2.0calc.com/questions/nbsp_5#r0
read more ..
Melody
Sep 10, 2014
0
660
2
how the h**l do use cos-1,sin-1 and tan-1
how the h**l do use cos-1,sin-1 and tan-1
Melody
●
●
Guest
Sep 10, 2014
0
699
4
2 to the power of 5 / 2 to the power of 3
2 to the power of 5 / 2 to the power of 3
Melody
●
●
●
●
Guest
Sep 10, 2014
+3
1588
7
+11912
one more confusion!pls explain this very nicely becoz i am very bad at solving these kind of questions!
The digits of a two-digit number differ by 3 . If the digits are interchanged and the resulting number is added to the original number, we get 143 . What can be he original number?
read more ..
Melody
●
●
●
●
●
●
●
rosala
Sep 10, 2014
0
566
1
1, 638.92 billion minus 10.80 billion
1, 638.92 billion minus 10.80 billion
Melody
●
Guest
Sep 10, 2014
+3
641
2
+11912
i dont know , i have tried this but am getting a wrong answer!
A rational number is such that when you multiply it by 5/2 and add 2/3 to the product , you get -7/12.What is the number?
Alan
●
●
rosala
Sep 10, 2014
+3
1045
9
+11912
I need quick help!
The base of an isosceles triangle is 4/3 cm . The perimeter of the triangle is 4 2/15 cm . What is the length of either of the remaining equal sides?
Alan
●
●
●
●
●
●
●
●
●
rosala
Sep 10, 2014
0
579
2
math homework
16x squared - 25y squared
Alan
●
●
Guest
Sep 10, 2014
+3
3902
2
+102
Find an autonomous differential equation with all of the following properties
is there anyone who can solve it and show the way?
Melody
●
●
milkshake
Sep 10, 2014
0
431
1
213.5 billion - 199.8 billion
213.5 billion - 199.8 billion
milkshake
●
Guest
Sep 10, 2014
0
477
2
A 6.5 pole is to be supported by a wire extending from the top of the pole to the ground,making an angle of 22degrees to the vertical. How l
A 6.5 pole is to be supported by a wire extending from the top of the pole to the ground,making an angle of 22degrees to the vertical. How long will the wire need to be?
Alan
●
●
Guest
Sep 10, 2014
+3
451
1
2+2*2=?
2+2*2=?
milkshake
●
Guest
Sep 10, 2014
0
535
2
how can i finish my math homework
how do i type in fractions
Alan
●
●
Guest
Sep 10, 2014
0
589
3
36,000 • 1\10
36,000 • 1\10
Melody
●
●
●
Guest
Sep 10, 2014
0
1130
1
what is 1.5 reduced
what is 1.5 reduced
●
Guest
Sep 10, 2014
0
463
1
how do you calculate gravity
how do you calculate gravity
milkshake
●
Guest
Sep 10, 2014
0
3282
2
the sum of the first 10000 positive even numbers is how much more than the sum of the first 10000 positive odd numbers?
the sum of the first 10000 positive even numbers is how much more than the sum of the first 10000 positive odd numbers?
CPhill
●
●
Guest
Sep 10, 2014
«
latest
9390
9389
..
690
689
688
687
686
..
2
1
»
Post New Question
3 Online Users
Top Users
+118654
Melody
moderator
+37084
ElectricPavlov
+33653
Alan
moderator
+14985
asinus
moderator
+5265
rarinstraw1195
+3146
admin
administrator
+2651
LiIIiam0216
+2489
GingerAle
+1911
tomtom
+1832
NotThatSmart
+1758
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.