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
234787 Questions
0
731
2
help
The sun subtend an angle at 35degree from the centre of the earth whose distant from the centre of the earth is 382,100km. find the diameter of the sun
●
●
Guest
Jan 25, 2020
0
693
2
I need help
For how many ordered pairs of positive integers (x,y) does the 1/x + 2/y =1/3 equation hold?
Write a^4-3a^2+9 as a product of two monic quadratics with integer coefficients?
Thank You!
read more ..
●
●
Guest
Jan 25, 2020
0
382
1
help
Charles has already broken 14 eggs, and he's breaking eggs at a rate of 12 per minute. Louis has already broken 22 eggs, and he's breaking eggs at a rate of 10 per minute. How many minutes will it take Charles to have broken as many eggs as Louis?
read more ..
●
Guest
Jan 25, 2020
0
565
3
help
One day, Alexis decides to write down all the numbers from 1 to 999 inclusive.
What is the sum of all the digits that Alexis wrote down?
●
●
●
Guest
Jan 25, 2020
0
927
3
Help...
Jay owns a fleet of 30 shiny cars.
Each car has either standard transmission or automatic transmission
Each car is either black, white, or red
Each car is either a Toyota, Mercedes-Benz, Chevrolet, Pinto, or Citroen.
No two
read more ..
●
●
●
Guest
Jan 25, 2020
0
538
1
please help
The angle of elevation of the top of a rock from the top and foot of a 100 cm high tower are respectively 30° and 45 ° .Find the height of the rock.
●
Guest
Jan 25, 2020
0
1829
2
Please help
The diagram below shoes four circles. Let A_1, A_2, A_3, A_4 denote the areas of the red region, yellow region, green region, and blue region, respectively. These areas satisfy A_1 = A_2/2 = A_3/3 = A_4/4. Let r_1 denote the smallest radius and r_4
read more ..
●
●
Guest
Jan 25, 2020
0
590
1
help
When running a 100 meter race matt reaches his maximum speed when he is 40 meters from the starting line, and 7 seconds have elapsed since the start of the race. Matt continues at this max speed for the rest of the race and is 80 meters from the starting
read more ..
●
Guest
Jan 25, 2020
0
390
1
math problem?
The rule sin(x)/cos(x) = tan(x), does that apply for sin^2(x)/cos^2(x)?
●
Guest
Jan 25, 2020
0
416
1
MATH
(x-a)*(x-b)*(x-c)*(x-d)*(x-e)*(x-f)*(x-g)*(x-h)*(x-i)*(x-j)*(x-k)*(x-l)*(x-m)*(x-n)*(x-o)*(x-p)*(x-q)*(x-r)*(x-s)*(x-t)*(x-u)*(x-v)*(x-w)*(x-x)*(x-y)*(x-z) what it will be?
●
Guest
Jan 25, 2020
0
706
1
help
A survey of 500 farmers showed that of the farmers, 121 grew only wheat, 113 grew only corn, 90 grew only oats, 199 grew wheat, 60 grew wheat and corn, 57 grew wheat and oats, and 182 grew corn. Determine the number of farmers who grew at least one of the
read more ..
●
Guest
Jan 25, 2020
+1
605
1
+5
Question!
What is
3 4/6 + 4 5/6
?
●
Nadie
Jan 25, 2020
0
666
2
probability question
I have a bag with 5 pennies and 6 nickels. I draw coins out one at a time at random. What is the probability that after 4 draws I have removed no more than 2 pennies from the bag?
●
●
Guest
Jan 25, 2020
0
629
1
help
An animal shelter spends $4.50 per day to care for each cat and $8.00 per day to care for each dog. Savannah noticed that the shelter spent $123.00 caring for cats and dogs on Tuesday. Savannah found a record showing that there were a total of 25 cats and
read more ..
●
Guest
Jan 25, 2020
0
550
0
Consider the infinite series defined by
Consider the infinite series defined by
∞
∑ (2n! /2^(2n))
read more ..
Guest
Jan 25, 2020
0
628
0
The length of the shortest side of a red pattern block is 25 mm. What is the area of the trapezoid?
The length of the shortest side of a red pattern block is 25 mm. What is the area of the trapezoid?
Guest
Jan 25, 2020
0
765
1
help
At an all-you-can-eat barbequefundraiser that you are sponsoring adults pay $6 for a dinner and children pay $4 for a dinner. 212 people attend and you raise $1128. What is the total number of adults and the total number of children attending?
read more ..
●
Guest
Jan 25, 2020
0
509
0
Consider the infinite series defined by
Consider the infinite series defined by
∞
∑ (2n! /2^(2n))
read more ..
Guest
Jan 25, 2020
0
638
1
help
Suppose that is a Mobius transformation such that , , and . Find the value of .
●
Guest
Jan 25, 2020
0
1073
1
help
Suppose we have a square with vertices at 0, -6+13i, , -19+7i ,and -13-6i. Suppose that we want to multiply these points by a single complex number a+bi to get a square with vertices 0, 8+2i, 6+10i, and -2+8i. What is (a,b)?
read more ..
●
Guest
Jan 25, 2020
0
878
1
help
Four houses in a row are each to be painted with one of the colors red, blue, green, and yellow. In how many different ways can the houses be painted so that no two adjacent houses are of the same color?
●
Guest
Jan 25, 2020
0
1798
5
Write $a^4 + 4$ as a product of two monic quadratics with integer coefficients.
Write $a^4 + 4$ as a product of two monic quadratics with integer coefficients.
Write $a^4 - 3a^2 + 9$ as a product of two monic quadratics with integer coefficients.
●
●
●
●
●
Guest
Jan 25, 2020
0
714
1
Geometry Help Please
A sector of a circle has a central angle of 100 degrees. If the area of the sector is 250pi, what is the radius of the circle?
●
Guest
Jan 25, 2020
0
666
1
what does $1,000 to the exponetial power of 52 equal?
what does $1,000 to the power of 52 equal?
●
Guest
Jan 25, 2020
0
393
1
help
A barrel of water is full. It decreases by 85%. Now it has 120 liters of water. How much liters of water did it have to begin with?
●
Guest
Jan 25, 2020
«
latest
9390
9389
..
6250
6249
6248
6247
6246
..
2
1
»
Post New Question
4 Online Users
Top Users
+118654
Melody
moderator
+37084
ElectricPavlov
+33653
Alan
moderator
+14985
asinus
moderator
+5265
rarinstraw1195
+3146
admin
administrator
+2651
LiIIiam0216
+2489
GingerAle
+1911
tomtom
+1832
NotThatSmart
+1758
bader
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.