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
231317 Questions
0
338
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
436
4
triangle
Triangle ABC has circumcenter O. If AB = 10 and [OAB] = 50 find the circumradius of triangle ABC.
●
●
●
●
Guest
May 16, 2021
-1
427
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
518
2
+125
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
425
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
443
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
351
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
846
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
501
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
505
1
+61
Pls help
can someone pls help with this hw question?
●
smonke
May 15, 2021
0
363
1
trig
In triangle ABC , we have A = 90 and sin B = 4/17. Find cos C.
●
Guest
May 15, 2021
0
483
2
+61
help pls
I'm very confused can someone pls help?
●
●
smonke
May 15, 2021
-1
929
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
0
463
1
function composition
If t(x) = 9 + 2f(x) and f(x) = x^2 - x - 3, then what is t(f(-2))?
●
Guest
May 15, 2021
0
416
1
right triangle-trig
In ABC , cos B = 3/25 and angle A is 90 degrees. What is cos C?
●
Guest
May 15, 2021
0
286
2
halpu me onii san
Find all pairs 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).
●
●
Guest
May 15, 2021
0
342
1
pls
Give an example of a triple (a, b, c) of real numbers such thatabc[a][b][c] = 2021,
where [x] denotes the greatest integer less than or equal to x
●
Guest
May 15, 2021
0
448
3
+61
Pls help!!
Idk how to do this, can someone help?
●
●
●
smonke
May 15, 2021
0
399
1
Trig / precalc question
cos theta = - (sqrt(5))/6 where pi <= theta <= (3pi)/2; tan beta = 4/3 where 0 <= beta <= pi/2 What is the exact value of sin(theta + beta)? Enter your answer as a fraction in simplified form.
●
Guest
May 15, 2021
0
494
1
A lot of nuts!
A bag contains 9 hazelnuts, 10 almonds, and 5 walnuts. If 6 are drawn at random, what is the probability of exactly 3 walnuts? thank you.
●
Guest
May 15, 2021
0
344
1
help
How many ways are there to put 5 balls in 2 boxes if the balls are distinguishable and the boxes are distinguishable?
●
Guest
May 15, 2021
0
482
1
math
A certain type of candle is packaged in boxes that measure 42 cm by 17 cm by 10 cm. The candle company that produced the above packaging has now designed shorter candles. A smaller box will be created by decreasing each dimension of the larger box by the
read more ..
●
Guest
May 15, 2021
0
251
0
coordinates
The lines y = 2x and y = 8/3*x are drawn in the coordinate plane. Find the slope of the line that bisects the acute angle between these lines.
Guest
May 15, 2021
«
latest
9251
9250
..
7708
7707
7706
7705
7704
..
2
1
»
Post New Question
3 Online Users
Top Users
+128731
CPhill
moderator
+118613
Melody
moderator
+33616
Alan
moderator
+14935
asinus
moderator
+9664
MaxWong
+3144
admin
administrator
+2440
GingerAle
+1791
tomtom
+1679
wiseowl
+1610
bader
+1232
LiIIiam0216
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.