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
237784 Questions
0
298
0
Asap plz everyone has struggled this
Hugo gave 1/4 of his money and an additional $1 to Calvin. He gave 1/5 of the remaining money and an additional $4 to Kenneth. The amount of money Hugo had left in the end was $31 more than the amount of money he gave to Kenneth. Find the amount of
read more ..
Guest
May 1, 2021
+1
514
1
+407
Help please!
There are 7 dots on a circle. What is the maximal number of intersection points outside the circle created by connecting these points with lines?
●
ss333
May 1, 2021
0
441
1
infinite geometric series
Evaluate the infinite geometric series: 1 + 2/7 + 4/49 + 8/343 + ...
MathProblemSolver101
●
Guest
May 1, 2021
0
458
1
sequence
Consider the geometric series 4 + 20/a + 100/a^2 + .... If the sum is a perfect square, what is the smallest possible value of a where a is a positive integer?
●
Guest
May 1, 2021
0
467
1
The answer is 18
Gressel the Goblin is making an inventory of Darklord Ganondorf’s treasure horde following a raid by some violent fellow named link. The horde now contains only 2150 gems (as in $). Gressel notices that there were twice as many green-gems (worth 1) as blue-gems
read more ..
●
Guest
May 1, 2021
0
467
1
system
Find a+b+c, given that x + y is not equal to -1 and
ax + by + c = x + 7
a + bx + cy = 2x + 6y
read more ..
●
Guest
May 1, 2021
0
460
1
help algebra
If $\sqrt{x+\!\sqrt{x+\!\sqrt{x+\!\sqrt{x+\cdots}}}}=8$, find x.
●
Guest
May 1, 2021
0
488
1
sequence
What is the positive difference between the 2000th term and the 2006th term of the arithmetic sequence -8, -2, 4,10,...?
●
Guest
May 1, 2021
0
463
1
pls halp
A regular octahedron is made up of eight equilateral triangles, each with side length one unit, as shown below. An ant starts at the top vertex, walks along the edges of the triangles without ever traversing the same edge twice, and ends at the top vertex.
read more ..
●
Guest
May 1, 2021
+3
1335
4
+166
Help is appreciated
Our club has 25 members, and wishes to pick a president, secretary, and treasurer. In how many ways can we choose the officers, if individual members are allowed to hold 2 but not all 3 offices?
(if you give an answer always explain
read more ..
●
●
●
●
viola
May 1, 2021
0
726
1
If $x + 2y= 4$ and $xy = -8$, what is the value of $x^2 + 4y^2$?
If $x + 2y= 4$ and $xy = -8$, what is the value of $x^2 + 4y^2$
●
Guest
May 1, 2021
0
430
1
sequence
What is the integer value of x in the arithmetic sequence 3^2, x, 3^4*3^2?
●
Guest
May 1, 2021
0
483
1
Free pizza with delivery if you solve this question and buy $100 worth of garlic bread at ur nearest shoe store
Let a, b, c, d, and e be positive integers. The sum of the four numbers on each of the five segments connecting "points" of the star is 28. What is the value of the sum a+b+c+d+e?
read more ..
●
Guest
May 1, 2021
+2
527
3
+166
help me
We call a number peachy if every digit in the number is either a 3 or next to a 3. For example, the numbers 83 and 131 are all peachy, but the numbers 304 and 31653 are not peachy.
How many positive 2-digit numbers are peachy?
read more ..
●
●
●
viola
May 1, 2021
0
573
1
piecewise function
Let
f(x) = ax + 3 if x > 2
f(x) = x + 5 if -2 <= x <= 2
read more ..
●
Guest
May 1, 2021
0
445
1
trig
In XYZ, and X = 90° , and cos Z = 7/ 29. Find sin Z and tan Y.
●
Guest
May 1, 2021
0
748
2
Help please!
At constant temperature, the pressure of a sample of gas is inversely proportional to its volume. I have some hydrogen in a 3.67 liter container with a pressure of 4 kPa. If I move all of it to a 1.835 liter container at the same temperature, what will
read more ..
●
●
Guest
May 1, 2021
0
390
1
Geometry Question
A dilation with scale factor -3 maps X to X' and Y to Y'. Given X'Y' = 2, find XY.
I tried it and turns out that 1/2, 4/9, 12, and 6 are all wrong. Help?
●
Guest
May 1, 2021
0
472
1
quadratic
The quadratic ax^2 + bx + c can be expressed in the form 2(x - 8)^2 + 4. When the quadratic 3ax^2 + 3bx + 3c is expressed in the form n(x - h)^2 + k, what is h?
●
Guest
May 1, 2021
0
450
5
Fraction
Hugo gave 1/4 of his money and an additional $1 to Calvin. He gave 1/5 of the remaining money and an additional $4 to Kenneth. The amount of money Hugo had left in the end was $31 more than the amount of money he gave to Kenneth. Find the amount of money
read more ..
●
●
●
●
●
Guest
May 1, 2021
0
431
8
Diagram Drawing
The width of the rectangles is 50% its length. Given that the perimeter of 3 such rectangles is 90 cm, find the length of 1 rectangle.
●
●
●
●
●
●
●
●
Guest
May 1, 2021
0
449
4
plz answer
Liam had 75% more magnets than John at first. Liam gave away 200% as many magnets as John. John was left with 25% of the magnets he had at first. What fraction of Liam's magnets did he have in the end?
●
●
●
●
Guest
May 1, 2021
+1
573
2
+83
plz answer
Emerson has $120 Each week he saves an additional $15
Write a function f(x) that models the total amount of money Emerson has after x weeks.
●
●
BanFoxSinOfGreed
May 1, 2021
0
1953
1
+83
Answer pls
Jerome is constructing a table of values that satisfies the definition of a function.
Inputs: -13, 20, 0, -4, 11, -1, 17, (blank space)
Outputs: -15, -11, -9, -2, -1, 5, 5, 13
read more ..
●
BanFoxSinOfGreed
May 1, 2021
+1
294
0
geometry
ABCDEFGHIJ is a regular decagon. The rotation centered at G with an angle a takes F to H. Given that a is less than 180 degrees, find a.
Guest
May 1, 2021
«
latest
9510
9509
..
7670
7669
7668
7667
7666
..
2
1
»
Post New Question
1 Online Users
Top Users
+130516
CPhill
moderator
+118723
Melody
moderator
+15131
asinus
moderator
+2221
Bosco
+1844
blackpanther
+1580
kittykat
+1540
learnmgcat
+1309
AnswerscorrectIy
+1024
Hi6942O
+1022
gnistory
+1013
magenta
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.