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}
234598 Questions
0
21
0
+665
Sum
Compute the sum
\frac{1}{\sqrt{36} + \sqrt{39}} + \frac{1}{\sqrt{36} + \sqrt{45}} + \frac{1}{\sqrt{39} +\sqrt{96}}
magenta
Feb 23, 2024
0
24
1
+665
Complex Numbers
Let x and y be complex numbers. If $x + y =2$ and $x^3 + y^3 = 5$, then what is $x^2 + y^2$?
●
magenta
Feb 23, 2024
Feb 22, 2024
0
27
0
+0
Real-world Applications of Trigonometric Functions
PLEASE HELP
xXValeXx
Feb 22, 2024
-1
33
1
+0
Angles and Angle Measures
What is the equivalent radian measure for the given degree measure?
45 Degrees
240 Degrees
260 Degrees
read more ..
●
xXValeXx
Feb 22, 2024
-1
30
1
+0
Angles and Angle Measures
In what quadrant does the terminal ray of the angle lie?
-160 Degrees
-104 Degrees
187 Degrees
read more ..
●
xXValeXx
Feb 22, 2024
+1
17
2
+52
im lost
Convert 2231_4 to base 2 without first converting to decimal.
●
●
MEMEGOD
Feb 22, 2024
0
18
2
+52
pls help
Convert 35 from base 10 to base 2
●
●
MEMEGOD
Feb 22, 2024
0
35
1
+1341
Algebra
Let S be the set of all real numbers of the form
a1/3 + a2/3^2 + a3/3^3 + ....
where a_i \in {0, 1, 2} for all i.
(a) Is the number 1/7 in the set S?
(b) Is the number 1/4 in the set S?
read more ..
●
kittykat
Feb 22, 2024
0
22
0
+1341
Sum
Compute
1 + \frac{3}{6} + \frac{5}{9} + \frac{7}{12} + \dotsb.
kittykat
Feb 22, 2024
0
39
0
+1341
Sum
Compute
\frac{1}{1 \times 4} + \frac{1}{4 \times 7} + \frac{1}{7 \times 10}
kittykat
Feb 22, 2024
0
18
0
+1341
Algebra
In class, we derived that
\frac{1}{n(n + 1)} = \frac{1}{n} - \frac{1}{n + 1}.
Fill in the blanks to make a true equation:
\frac{5x}{(x - 1)(x^2 + 2)(x + 7)^3)} = \frac{A}{x - 1} + \frac{Bx + C}{x^2 + 2} + \frac{D}{x + 7}
read more ..
kittykat
Feb 22, 2024
0
32
2
+24
I need help
Fill in the blank with a constant, so that the resulting expression can be factored as the product of two linear expressions:
read more ..
●
●
iuuhfeusedhu
Feb 22, 2024
0
23
1
+24
PLEASE HELP ASAP
Find the number of ordered pairs of integers such that
read more ..
●
iuuhfeusedhu
Feb 22, 2024
0
17
0
+1756
Algebra
Let $a_1,$ $a_2,$ $a_3,$ $\dots$ be an arithmetic sequence. Let $S_n$ denote the sum of the first $n$ terms. If $S_1 = \frac{1}{5}$ and $S_2 = \frac{1}{10},$ then find $S_{15}.$
bader
Feb 22, 2024
0
14
1
+0
Algebra
In a store window, there was a box of berries having a total weight of 200 kg. The berries were 98% water, by weight. After two days in the sun, the water content of the berries was only 95%, by weight. What was the total weight of the berries
read more ..
●
Lilliam0216
Feb 22, 2024
0
15
1
+0
ALGEBRA linear equations
The system of equations
{xy}/{x + y} = 1,{xz}/{x + z} = 2, {yz}/{y + z} = 4
has exactly one solution. What is z in this solution?
I need help, I figured that x and y are both 2, but it's impossible.
●
Lilliam0216
Feb 22, 2024
0
2
0
+400
help with algebra
Laverne starts counting out loud by ${}5$'s. She starts with $2$. As Laverne counts, Shirley sums the numbers Laverne says. When the sum finally exceeds $50,$ Shirley runs screaming from the room. What number does Laverne say that
read more ..
omgitsrne
Feb 22, 2024
«
latest
9382
9381
..
9150
9149
9148
9147
9146
..
2
1
»
Post New Question
2 Online Users
Top Users
+118653
Melody
moderator
+37057
ElectricPavlov
+33647
Alan
moderator
+14983
asinus
moderator
+2972
TitaniumRome
+2641
LiIIiam0216
+2489
GingerAle
+1877
tomtom
+1790
NotThatSmart
+1756
bader
+1694
ABJeIIy
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.