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
237683 Questions
0
550
1
plz solve this
12 1\2+8 1\6+9 1\3=?
1) 20 2) 30
3) 40 4)50
●
Guest
Aug 1, 2016
0
731
1
+9676
Partial Differentiation
●
MaxWong
Aug 1, 2016
0
609
1
maths
m/x+q=N Find q m=9, x=2 N=1+4/5
●
Guest
Aug 1, 2016
0
543
1
ughhhhh precalc
My homework is telling me that the square root of x^2+(x^2-10)^2 is equal to the square root of x^4-19x^2+100 .... I don't understand where the -19x^2 comes from
●
Guest
Aug 1, 2016
0
568
1
Trigonometry
find X, given that tan(x) = 0.4557
●
Guest
Aug 1, 2016
0
584
1
maths
what is the area of a square
●
Guest
Aug 1, 2016
0
784
1
+244
Physics 102 question
A metal having a work function of 1.2 eV has light whose photon energy is 3.6 eV shining on it. What is maximum possible kinetic energy of the electrons that are ejected?
A.5.4 × 10-19 J
B.3.8 x 10-19 J
C.4.9 × 10-19 J
read more ..
●
DamienDenninson
Aug 1, 2016
0
720
1
+386
Log problems
HI!
I have a few problems to solve involving logs. Here's one:
read more ..
●
TonyDrummer2
Aug 1, 2016
0
1221
1
+244
hydrogen physics
A hydrogen atom has a single electron in its n = 2 excited state. It absorbs a photon with energy 8.9 eV, which frees the electron from the atom. What is the energy of the resulting free electron?
A.7.9 eV
B.5.5 eV
C.8.9
read more ..
●
DamienDenninson
Aug 1, 2016
0
2306
2
+389
Suppose r and s are the values of c that satisfy the equation x^2-2mx+(m^2+2m+3)=0 for some real number m. Find the minimum real value of r^2+s^2.
Suppose r and s are the values of c that satisfy the equation x^2-2mx+(m^2+2m+3)=0 for some real number m. Find the minimum real value of r^2+s^2.
●
●
Dabae
Aug 1, 2016
0
2910
4
+389
Suppose the polynomial p(x)=x^3+ax^2+bc+c has the property that the mean of its zeroes, the product of its zeroes, and the sum of its coefficients are all
Suppose the polynomial p(x)=x^3+ax^2+bc+c has the property that the mean of its zeroes, the product of its zeroes, and the sum of its coefficients are all equal. If the y-intercept of the graph of y=p(x) is 2, what is b?
Melody
●
●
●
●
Dabae
Aug 1, 2016
0
700
2
+386
Find X
Hi!
I have log base x (16) = 4/3
read more ..
●
●
TonyDrummer2
Aug 1, 2016
0
632
1
Let x # y = x^2/y for all x and y such that y≠0. Find all values of a such that a # 3 = 9. List the values you find in increasing order,
Let x # y = x^2/y for all x and y such that y≠0. Find all values of a such that a # 3 = 9. List the values you find in increasing order, separated by commas.
●
Guest
Aug 1, 2016
0
650
0
+244
Physics assist please
The gulf oil spill puts an oil film (refractive index = 1.45 ) with a thickness 280 nm on top of some salt water (index of refraction = 1.35). The sun (white light) shines on this from directly above and an observer in an aircraft sees a sheen. What is
read more ..
DamienDenninson
Aug 1, 2016
Jul 31, 2016
0
740
0
+244
General Physics 102
A double slit experiment has blue laser light with a wavelength of 400 nm incident upon two slits that are 59.3 μm apart. The viewing screen is 1.84 m from the slits. How far apart is the first dark fringe on one side of the central maximum to the third
read more ..
DamienDenninson
Jul 31, 2016
0
764
2
0.545+3[0.545] 1/2
0.545+3[0.545]1/2
●
●
Guest
Jul 31, 2016
0
611
1
Help
how to make a negitive
●
Guest
Jul 31, 2016
0
778
4
How do i find a formula for the inverse if this is one to one
How do i find a formula for the inverse if this is one to one
x-10/x+4
●
●
●
●
Guest
Jul 31, 2016
0
649
1
fractions
how do you make a fraction on the calculator?
●
Guest
Jul 31, 2016
0
587
0
linear cost function?
8000 to produce 180 parts, marginal cost of $25. Find the linear function
Guest
Jul 31, 2016
0
669
1
9.47 times 5
9.47 times 5
●
Guest
Jul 31, 2016
«
latest
9506
9505
..
3443
3442
3441
3440
3439
..
2
1
»
Post New Question
1 Online Users
Top Users
+130547
CPhill
moderator
+37184
ElectricPavlov
+33666
Alan
moderator
+15134
asinus
moderator
+3146
admin
administrator
+2272
Bosco
+1808
blackpanther
+850
cooIcooIcooI17
+762
history
+448
HiylinLink
+267
CInsbstnkng
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.