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
230564 Questions
0
507
2
These spectra are from the set of seven compounds from the pre-lab for this experiment.
These spectra are from the set of seven compounds from the pre-lab for this experiment: acetanilide, acetic anhydride, acetone, benzoic acid, caffeine, ethyl-4-aminobenzoate, and ethyl acetate. For each spectrum list the wavenumber of any carbonyl (C=O)
read more ..
off-topic
●
●
Guest
Nov 25, 2019
0
1296
1
help me!!!
A solid 5x5x5 cube is composed of unit cubes. Each face of the large, solid cube is partially painted with gray paint, as shown.
What
read more ..
●
Guest
Nov 25, 2019
0
811
3
the ultimate question of first graders
whats 1+1?
off-topic
●
●
●
Guest
Nov 25, 2019
0
708
1
For this question, refer to the excerpt from The Lost Prince by Francis Hodgson Burnett on the Unit Test Reading Passages page.
Please help ASAP ! let me know if I am right or wrong, Thank you
off-topic
●
Guest
Nov 25, 2019
0
647
3
help
The Fibonacci numbers 1, 1, 2, 3, 5, 8, . . . form a sequence where each term, after the first two, is the sum of the two previous terms. How many of the first 1000 terms are even?
●
●
●
Guest
Nov 25, 2019
0
613
2
help
Find all solutions to 1/a - 1/b = 1/12 in positive integers.
●
●
Guest
Nov 25, 2019
0
690
1
+134
Money graphs
how do i do this
●
petri
Nov 25, 2019
+1
753
1
+168
circles
i got this thus far:
a.
i.M(10,12)
read more ..
●
HoldMyBeer
Nov 25, 2019
0
762
2
help
Find the number of even digits in the product 2,222,222,222 * 9,999,999,999.
●
●
Guest
Nov 25, 2019
0
860
1
+134
Percentages help
If the volume of water in the tank at the time is Vt then wouldn't it just be 0?
●
petri
Nov 25, 2019
0
1202
1
What differences would you expect to see in a population made up of individuals whose chromosomes experience crossing-over frequently com
I need Help please.ASAP, thank you
off-topic
●
Guest
Nov 25, 2019
0
650
1
-1
Whelp
Huggy cant log into his account it says unknown username every time he trys help!!!!!?????
off-topic
●
Charley
Nov 25, 2019
-1
772
3
Need the answer by tonight!
The equation y = -6t^2 + 51t describes the height (in feet) of a projectile launched from the surface of Mars at 51 feet per second. In how many seconds will the projectile first reach 108 feet in height?
●
●
●
Guest
Nov 25, 2019
0
373
0
help
You have two identical decks of cards. You remove the four “eight” cards from one deck and add them to the other. Then you draw one card at random from each deck. What is the probability that the cards you draw constitute a pair? (A pair is two cards of
read more ..
Guest
Nov 25, 2019
0
637
1
What is the value/answer to each of these questions? (make sure to show your work)
I need help solving these please use PEMDAS. ASAP! Thank you.
Omi67
●
Guest
Nov 25, 2019
0
372
0
Question!
Hello, I was wondering If a molecule for example have 1000 atoms, after 8 days it will have half of it. then after another 8 days it will have half of the first half (Ex. 1000/2=500 , 500/2=250)
If it continue to do so, will it ever reach
read more ..
Guest
Nov 25, 2019
0
738
1
Due today
John and Jane go rock-climbing together. John climbs a height of (x+5) miles in (x-1) hours and Jane climbs a height of (x+11) miles in (x+1) hours. Is it possible that they were climbing at the same speed? If so, what must have been their speed, in miles
read more ..
Omi67
●
Guest
Nov 25, 2019
0
400
1
help
How many of the integers 0, 1, 2, . . . , 999 are neither divisible by 9 nor contain the digit 9?
●
Guest
Nov 25, 2019
0
437
1
Need help
Find all r for which the infinite geometric series
is defined. Enter all possible values of r as an interval.
●
Guest
Nov 25, 2019
0
460
1
Proofs!
Given: YX ≅ TW and YX || TW
YP ⟂ TW
ZW ⟂ YT
TP ≅ TZ
read more ..
●
Guest
Nov 25, 2019
+1
895
6
+239
Solutions for Triangles
I'm interested in part A
Thanks & regards
read more ..
●
●
●
●
●
●
OldTimer
Nov 25, 2019
0
707
9
help
Idun is rolling four ordinary six-faced dice, with the faces labelled 1 through 6. What is the probability that her total score is divisible by 3?
●
●
●
●
●
●
●
●
●
Guest
Nov 25, 2019
0
990
3
+152
Ok I still need help
The numbers 1, 2, ... , 10 are to be entered into the 10 boxes shown below, so that each number is used exactly once:
What is the maximum value of P? What is the minimum value of P?
●
●
●
BIGChungus
Nov 25, 2019
«
latest
9221
9220
..
6137
6136
6135
6134
6133
..
2
1
»
Post New Question
3 Online Users
Top Users
+128460
CPhill
moderator
+118608
Melody
moderator
+33615
Alan
moderator
+14913
asinus
moderator
+9519
MaxWong
+3144
admin
administrator
+2440
GingerAle
+1763
tomtom
+1484
bader
+1085
parmen
+1032
kittykat
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.