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
230466 Questions
0
70
1
counting
When two standard 6-sided dice are rolled, there are 36 possible outcomes for the sum of the two rolls: one sum of 2, two sums of 3, and so on, up to one sum of 12.
Find all possible ways of numbering two 6-sided dice
read more ..
●
Guest
Mar 17, 2023
0
58
0
counting
Need help quick
(a) Find the number of ways that Magnus can give out 20 identical stickers to 5 of his friends. (Not everyone has to get a sticker.)
(b) Find the number of ways that Magnus can give out
read more ..
Guest
Mar 17, 2023
0
78
2
ixl is dumb
A parabola opening up or down has vertex (0, – 6) and passes through (12,6). Write its equation in vertex form.
●
●
Guest
Mar 17, 2023
0
73
1
help please
If $x$ is a positive integer, what is the value of $x$ for the equation $(x!-(x-3)!) \div 23 = 1$?
●
Guest
Mar 17, 2023
0
72
0
geometry
In tetrahedron ABCO, angle AOB = angle AOC = angle BOC = 90^\circ. A cube is inscribed in the tetrahedron so that one of its vertices is at O, and the opposite vertex lies on face ABC. Let OA = 1, OB = 1, OC = 1. Show that the
read more ..
Guest
Mar 17, 2023
0
75
0
precalc
In triangle PQT, R is on side PT such that QR = QP. Also, QS is an altitude, and QT = 10. The values of tan TRS, tan QTR, tan SQT form an arithmetic progression, and the values of cot SQT, cot RQT, cot SQR form a geometic progression.
read more ..
Guest
Mar 17, 2023
0
65
0
Complex numbers
help need help with this
Describe all solutions to zw - 3w - 2iw + 4z = 7iw + 5w + 11iz - 13 + 15i
where z and w are complex numbers.
Guest
Mar 17, 2023
0
78
1
Probability
I need to compute probability
A member of the junior varsity swim team will be elected as President. Each member is equally likely to be elected. The probability that a sophomore is elected is the probability
read more ..
●
Guest
Mar 17, 2023
0
63
2
Counting
Joanna has six beads that she wants to assemble into a bracelet. Two of the beads have the same color, and the other four all have the same color. How many different ways can Joanna assemble her bracelet? (Two bracelets are considered identical if one can
read more ..
●
●
Guest
Mar 17, 2023
0
69
2
counting
How many solutions are there to the equation
u + v + w + x + y + z = 18
where u, v, w, x, y, and z are nonnegative integers, and x is at most 10?
●
●
Guest
Mar 17, 2023
+1
81
5
+185
complex numbers
Let a,b, and c be distinct integers and let x be a complex number such that x^3=1 and x≠1. Solve for the minimum value of the magnitude of a+bx+cx^2
●
●
●
●
●
idontknowhowtodivide
Mar 17, 2023
0
76
1
counting
Help plz with this
There are 97 students in South High School. South High School offers only Chinese and Spanish. There are more students in Chinese than in Spanish, and every student takes at least one language. If students take
read more ..
●
Guest
Mar 17, 2023
0
61
2
+4
Ponzi Scheme
A Ponzi scheme is a fraudulent investment operation in which returns to investors are paid from funds collected from new investors rather than from profit earned by the operator. The scheme takes its name from the notorious operation of Charles Ponzi in
read more ..
●
●
owy0218
Mar 17, 2023
0
64
0
Counting
Plz help
A standard six-sided die is rolled 7 times. You are told that among the rolls, there was one 1, two 2's, and three 4's. How many possible sequences of rolls could there have been? (For example, 5, 1, 2, 2,
read more ..
Guest
Mar 17, 2023
0
73
1
Pls Help, I tried but idk if its right or not
We are looking to factor Some values of k allow us to factor it as a product of linear binomials with integer coefficients. What are all such values of k?
●
Guest
Mar 17, 2023
Mar 16, 2023
0
66
1
coordinates
Points A, B, and C are given in the coordinate plane. There exists a point Q and a constant k such that for any point P,
PA^2 + PB^2 + PC^2 = 3PQ^2 + k
If A = , B = , and C = , then find the constant k.
●
Guest
Mar 16, 2023
0
74
1
precalc
Plz help with parametric equations
The position of a particle is given by the parametric equations
x = 1 + sin pi*t - cos pi*t
y = 3*sin pi*t + 2*cos pi*t
read more ..
●
Guest
Mar 16, 2023
0
74
1
Sequence
Help how to do this
Cai writes down the list of positive integers, excluding squares and cubes and all perfect powers. His sequence starts
2, 3, 5, 6, 7, 10, 11, ...
What is the 100th term in Cai's list?
●
Guest
Mar 16, 2023
0
71
1
how to solve using vietas formulas?
Two of the roots of the equation ax^3+bx^2+cx+d=0 are -5 and 6. Find an expression for the third root in terms of only a and c (that is, your expression should not involve b or d).
●
Guest
Mar 16, 2023
0
63
1
Help pelaseeee
What is the value of b, if 20 – b – 14 + 3b = 10
●
Guest
Mar 16, 2023
+1
80
2
+63
Need help with algebra question
How many linear functions (functions of the form f(x)=ax+b ) are equal to their own inverse?
●
●
youngwolf
Mar 16, 2023
0
68
0
Algebra
Need help with these
Select all the correct statements. (For this problem, we assume that an exponential function is of the form ka^x where a > 0)
(A) The following function is exponential: y = 2^x
(B)
read more ..
Guest
Mar 16, 2023
«
latest
9217
9216
..
8822
8821
8820
8819
8818
..
2
1
»
Post New Question
1 Online Users
Top Users
+128408
CPhill
moderator
+118608
Melody
moderator
+33615
Alan
moderator
+14905
asinus
moderator
+9519
MaxWong
+3144
admin
administrator
+2440
GingerAle
+1763
tomtom
+1484
bader
+1037
parmen
+1030
blackpanther
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.