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}
196836 Questions
0
280
1
Algebra
The combination locks on the lockers at Hillside School have numbers from 0 through 39 (inclusive). A locker combination consists of three different numbers, where the order matters. Because of the way the locks are manufactured, all three numbers are even
read more ..
●
Guest
May 16, 2021
0
30
1
trig
In triangle GHI, we have GH = HI = 25 and GI = 48.
(a) What is sin GIH?
read more ..
●
Guest
May 16, 2021
0
40
1
algebra
If h>0, find all values of h such that h^2 + h = 72.
●
Guest
May 16, 2021
0
41
2
trig
In right triangle DEF, we have D = 25, E = 90, and EF = 93. Find DE to the nearest tenth. You may use a calculator for this problem.
●
●
Guest
May 16, 2021
0
42
1
algebra
There are numbers A and B for which
A/(x - 1) + B/(x + 1) = (2x + 1)/(x^2 - 1)
for every number $x \neq \pm 1$. Find B.
●
Guest
May 16, 2021
0
44
1
Piece-wise Function
Let
How many solutions does the equation have?
●
Guest
May 16, 2021
0
42
1
number theory
Rick is thinking of a positive factor of 14 and Steve is thinking of a positive factor of 424. If Rick and Steve are thinking of the same number, how many possible numbers could they be thinking of?
●
Guest
May 16, 2021
0
44
2
Help please
For real numbers x and y, find all possible values of
Enter all possible values, separated by commas.
●
●
Guest
May 16, 2021
0
51
1
Help please
If , and x can be any real number except 1, what real values can m NOT have?
●
Guest
May 16, 2021
0
46
1
number theory
Suppose that a and b are positive integers for which a has 3 factors 3 and b has factors a + 4. If b is divisible by a, what is the least possible value of b?
●
Guest
May 16, 2021
0
42
1
coordinates
There are four points that are 5 units from the line y=13 and 18 units from the point (7,15). What is the sum of the x and y and coordinates of all four of these points?
●
Guest
May 16, 2021
0
60
4
triangle
Triangle ABC has circumcenter O. If AB = 10 and [OAB] = 50 find the circumradius of triangle ABC.
●
●
●
●
Guest
May 16, 2021
-1
54
1
WillBillDillPickle
Mega Movies hosted a film premiere on Friday night. They charged $7 for adults and $5 for children. One hundred twenty-three adults and children attended, and $829 was made in ticket sales. How many children and how many adults went to the film premiere?
read more ..
●
Guest
May 16, 2021
0
65
2
+115
Algebra? not sure what to call this
OK, so im pretty sure this is really ez except im kinda confusioned rn.
●
●
Mathlord
May 16, 2021
May 15, 2021
0
44
2
trig
In triangle PQR, we have angle P = 90, QR = 15, and tan R = 6 cos Q. What is PQ?
●
●
Guest
May 15, 2021
0
56
1
trig
In right triangle ABC with B = 90 , we have 2 sin A = 5 cos A. What is tan A?
●
Guest
May 15, 2021
0
47
2
coordinates
For some positive real number r, the line x + y = r is tangent to the circle x^2 + y^2 = 2r. Find r.
●
●
Guest
May 15, 2021
0
76
3
counting
We say that a set of integers is sparse if any two elements in the set differ by at least 3. Find the number of sparse subsets of 1, 2, 3, ... , 12, 13, 14 (Note that the empty set is also sparse.)
●
●
●
Guest
May 15, 2021
0
65
1
coordinates
The line y = (3x + 20)/5 intersects a circle centered at the origin at A and B. We know the length of chord AB is 20. Find the area of the circle.
●
Guest
May 15, 2021
0
68
1
+61
Pls help
can someone pls help with this hw question?
●
smonke
May 15, 2021
0
48
1
trig
In triangle ABC , we have A = 90 and sin B = 4/17. Find cos C.
●
Guest
May 15, 2021
0
64
2
+61
help pls
I'm very confused can someone pls help?
●
●
smonke
May 15, 2021
-1
78
2
Find all pairs $x+y=10$ of real numbers such that $x + y = 10$ and $x^2 + y^2 = 56$. For example, to enter the solutions and ,&n
Find all pairs $x+y=10$ of real numbers such that $x + y = 10$ and $x^2 + y^2 = 56$.
For example, to enter the solutions and , you would enter "(2,4),(-3,9)" (without the quotation marks).
I reposted this
read more ..
●
●
Guest
May 15, 2021
«
latest
7872
7871
..
7793
7792
7791
7790
7789
..
2
1
»
Post New Question
30 Online Users
Top Users
+119744
CPhill
moderator
+113567
Melody
moderator
+32549
ElectricPavlov
+32236
Alan
moderator
+25911
heureka
+22081
geno3141
+12511
Omi67
moderator
+11607
asinus
moderator
+9292
hectictar
+4164
zegroes
+3692
BrittanyJ
Sticky Topics
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
Filter Issues
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
https://www.desmos.com/calculator/bsh9ex1zxj
@ Is PROCRASTINATION a problem for you ?
Historical post!
What is happening? Wrap #4
Great Questions to Learn From 2
Great Answers to Learn From
Reference Material