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
230566 Questions
+1
811
1
+1639
What is the area of ΔEBF?
In triangle ABC, point D divides side AC so that AD : DC = 1 : 2. Let E be the midpoint of BD and let F be the point of intersection of line BC and line AE. Given that the area of ΔABC is 360 cm2, what is the area of ΔEBF?
read more ..
●
jugoslav
Dec 1, 2020
0
420
0
Math
In 2007, the U.S. population was 302 million people. In 2012, it was 314 million. What was the rate of population change per year?
The rate of population changed was __ million people per year.
Guest
Dec 1, 2020
0
435
2
trig problem
If A is an acute angle such that tan A + sec A = 3, then find cos A.
●
●
Guest
Dec 1, 2020
0
490
3
Merry Christmas!!!
Here is a pretty hard problem that we all can work together to solve before Christmas
read more ..
●
●
●
Guest
Dec 1, 2020
0
472
2
trig
In right triangle DEF, we have angle E = 90 degrees and tan D = 4*sin D. What is sin F?
●
●
Guest
Dec 1, 2020
0
349
1
.....Sooooo I heard someone was talking about be.....HOLA NINOS!
43756369558346386865834658345734-456597847834378938934589768976976538956348
●
Guest
Dec 1, 2020
0
358
0
angle
if m<1=(7x-19)and m<2=(x+5)find m<2 ???
Guest
Dec 1, 2020
0
398
1
right triangle
The longer leg of a right triangle is 8 more than the shorter leg. The hypotenuse is 10 more than the longer leg. Find all three sides.
●
Guest
Dec 1, 2020
0
376
1
help with trig
In right triangle ABC with angle B = 90 degrees, we have 2 sin A = 5 cos A. What is sin A?
●
Guest
Dec 1, 2020
0
440
1
cube question
ABCDEFGH shown below is a cube with volume 240. Find the volume of pyramid ABCH.
●
Guest
Dec 1, 2020
0
832
1
What is the largest angle measure in a triangle with sides of lengths 3, 5, and 7?
What is the largest angle measure in a triangle with sides of lengths 3, 5, and 7? (I think you need to solve this with algebra)
Thank you!
●
Guest
Dec 1, 2020
0
398
1
intrest
allinson was left an inheritance by her great aunt on her 12th birthday but she´s no allowed to touch it until shes 21. she inherited 50000 on an account with 2% interest how much intrest would she hav earned at 21 years old
●
Guest
Dec 1, 2020
0
296
0
Replying to is it rectangle polygon
In Euclidean geometry, a regular polygon is a polygon that is equiangular (all angles are equal in measure) and equilateral (all sides have the same length). Regular polygons may be either convex or star.
Guest
Dec 1, 2020
0
403
1
How to make a rainbow loom
Somebody please answer this question I have no idea how to do it.
●
Guest
Dec 1, 2020
0
487
1
In a certain regular polygon
In a certain regular polygon, the measure of each interior angle is nine times the measure of each exterior angle. Find the number of sides in this regular polygon.
●
Guest
Dec 1, 2020
0
1256
1
Given PQR≅STU, m∠R=80, and m∠S=70, what is the measure of ∠Q?
Given △PQR≅△STU, m∠R=80°, and m∠S=70°, what is the measure of ∠Q?
●
Guest
Dec 1, 2020
0
868
1
+466
Suppose $P$ is the point $(5,3)$ and $Q$ is the point $(-3,6)$. Find point $T$ such that $Q$ is the midpoint of segment $\overline{PT}$.
help please
●
dududsu2
Dec 1, 2020
0
332
2
which is it?
Is 3/8 Rational or Irrational helllllp
●
●
Guest
Dec 1, 2020
0
278
1
help pls
please help!
read more ..
●
Guest
Dec 1, 2020
0
388
1
number of diagonals
The number of diagonals in a certain regular polygon is equal to two times the number of sides. How many sides does this polygon have?
●
Guest
Dec 1, 2020
0
261
0
Help whit a simple match calculation
1/0.02^2)*(2*0.02*atanh(0.02)-ln(1+0.02^2)) this is supposed to be 0.705
Guest
Dec 1, 2020
0
284
1
Find the infinite sum
Find the infinite sum of
1/7 + 2/7^2 + 3/7^3 + 1/7^4 + 2/7^5 + 3/7^6 + ...
●
Guest
Dec 1, 2020
0
830
1
+466
Define $a@b=ab-b^2$ and $a\#b=a+b-ab^2$. What is $\dfrac{6@2}{6\#2}$?
help please
●
dududsu2
Dec 1, 2020
0
309
2
PLZ HELP
What is the maximum value of 4(x+7)(2-x), over all real numbers ?
●
●
Guest
Dec 1, 2020
0
422
2
A teacher has a class of 6 students
A teacher has a class of 6 students and she wants to break them into three groups of 2 students. How many ways can she do that?
●
●
Guest
Dec 1, 2020
«
latest
9221
9220
..
7174
7173
7172
7171
7170
..
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.