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
230410 Questions
0
542
0
help
In a city, 49% of the adults are male. Of the adults, 24% are male and rent action-movie DVDs and 10% are female and rent action-movie DVDs.
If an adult is randomly picked, the probability that the person rents action-movie DVDs, given that the person
read more ..
Guest
Mar 9, 2020
0
631
2
Complex Numbers
Let w be a complex number such that w^3=1 Find all possible values of 1/(1+w) + 1/(1+w^2).
●
●
Guest
Mar 9, 2020
Mar 8, 2020
0
420
5
please help :)
Find the largest angle of quadrilateral ABCD in degrees, if (angle A)/2 = (angle B)/3 = (angle R)/4.
●
●
●
●
●
Guest
Mar 8, 2020
0
1145
2
If a person consumes 5.5 × 105 kcal in a day and one barrel of oil can produce 3.7 × 106 kcal, what is the equivalent of energy consumed per
If a person consumes 5.5 × 105 kcal in a day and one barrel of oil can produce 3.7 × 106 kcal, what is the equivalent of energy consumed per year by that person in terms of barrels of oil?
●
●
Guest
Mar 8, 2020
0
605
1
please help
A certain drug is made rom only two ingredients: compound A and compound B. There are 5 milliliters of compound A used for every 8 milliliters of compound B. If a chemist wants to make 1287 milliliters of the drug, how many milliliters of compound B are
read more ..
●
Guest
Mar 8, 2020
0
631
3
+45
Linear Algebra Question
Hi I was wondering if we have 2 for example A,B matrix 2x2 with integers and DetA≠0 , DetB≠0 the 2x2 Matrix will have DetC≠0?
There is a theorem of this and a proof?
●
●
●
DimitrisThymaras
Mar 8, 2020
0
768
1
Help plzz
Compute(y+3)(2y+5) if y is a solution to 2y^2+11y+50
●
Guest
Mar 8, 2020
0
640
2
Geometry Question — Triangles
A right triangle has an 80 degree angle. How many times larger is the longer leg compared to the shorter leg? Round your answer to the nearest whole number.
Thanks!
●
●
Guest
Mar 8, 2020
0
1364
2
+312
GEOMETRY XI
Two circles intersect at A and B. A common external tangent is tangent to the circles at T and U, as shown. Let M be the intersection of line AB and TU. If AB = 9 and BM = 3, find TU.
read more ..
●
●
mathleteig
Mar 8, 2020
+7
659
1
+874
help plz
help plzz
●
MathProblemSolver101
Mar 8, 2020
+6
670
4
+874
Melody regains 1st!
Melody regains first place! It's the battle!
off-topic
●
●
●
●
MathProblemSolver101
Mar 8, 2020
0
957
1
HALP ASAP
Trapezoid $EFGH$ is inscribed in a circle, with $EF \parallel GH$. If arc $GH$ is $70$ degrees, arc $EH$ is $x^2 - 2x$ degrees, and arc $FG$ is $56 - 3x$ degrees, where $x > 0,$ find arc $EPF$, in degrees.
read more ..
●
Guest
Mar 8, 2020
0
693
1
Halp
Points l and m lie on a circle centered at o and arc lm is 75. The circle passing through points o, l, and m is drawn. Find the measure of arc lom on the smaller circle, in degrees.
read more ..
●
Guest
Mar 8, 2020
0
1095
2
Answer ASAP Please!!!
7b/12=4.2. Which two sides do you times by 12 and divide by 7?
●
●
Guest
Mar 8, 2020
+2
659
3
+874
deleted
deleted
●
●
●
MathProblemSolver101
Mar 8, 2020
0
592
1
help
Let $\triangle ABC$ be a right triangle such that $B$ is a right angle. A circle with diameter of $BC$ meets side $AC% at $D$ If $AD = 1$ and
$BD = 4,$
then what is
$CD$
read more ..
●
Guest
Mar 8, 2020
0
365
1
math help
Old MacDonald has 5 chickens, 4 donkeys, and 7 emus. How many ways can he pair up the animals so that every pair consists of animals of different species? (The order of the animals within each pair does not matter, and the order among the pairs does not
read more ..
●
Guest
Mar 8, 2020
0
333
1
Please help!
The Highly Improbable Foods Company makes vegetarian versions of burgers, hot dogs, and chicken wings, and they offer two platters. Platter A consists of one burger, three hot dogs, and 5 chicken wings, which costs $16. Platter B consists of two
read more ..
●
Guest
Mar 8, 2020
0
611
3
+35
Some Hlep please
Suppose we have a bag with 10 slips of paper in it. Eight of these have a 3 on them and the other two have a 9 on them.
d) How many 9's do we have to add to make the expected value equal to 6?
e) How many 9's do I have to add before the expected
read more ..
●
●
●
JustAnotherFailure
Mar 8, 2020
0
567
4
+35
Hey! :) Please help, thanks!
Hi everyone! This is my first time using this site. If I am doing anything wrong or if I should fix anything, please tell me! Thank you all very much! :D
Suppose we have a bag with 10 slips of paper in it. Eight of these have a 3 on
read more ..
●
●
●
●
JustAnotherFailure
Mar 8, 2020
0
692
7
9 + 10
hi what is 9 + 10
●
●
●
●
●
●
●
Guest
Mar 8, 2020
-2
602
2
+194
Math Help, Counting and Probabilty
A stick is 5 units long. It is broken at two points, chosen at random. What is the probability that all three pieces are longer than 1 unit?
Thanks so much for help in advance :)
●
●
somehelpplease
Mar 8, 2020
-2
624
2
+194
What's the best type of lizard? Whoops, sorry, I meant Math Help Please
Let triangle DEF be equilateral, where the side length is 3. A point G is chosen at random inside the triangle. Find the probability that the length DG is at most 1.
Help would be SO appreciated! Thank you!
●
●
somehelpplease
Mar 8, 2020
-1
637
1
+194
I really need help!!!
Right triangle XYZ has legs of length XY=12 and YZ=6. Point D is chosen at random within the triangle XYZ. What is the probability that the area of triangle XYD is at most 12?
●
somehelpplease
Mar 8, 2020
«
latest
9215
9214
..
6359
6358
6357
6356
6355
..
2
1
»
Post New Question
3 Online Users
Top Users
+128406
CPhill
moderator
+118608
Melody
moderator
+33614
Alan
moderator
+14903
asinus
moderator
+9519
MaxWong
+3144
admin
administrator
+2440
GingerAle
+1763
tomtom
+1370
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.