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
230906 Questions
0
126
0
Domain
If f(x) is a function whose domain is [-25,5] and g(x) = f(x^2), then the domain of g(x) is an interval of what width?
Guest
Jul 29, 2022
0
273
3
Graphing parabolas
The graph of the equation y = Ax^2 + Bx + C , where are A, B, C integers, is shown below. Find A + B + C.
read more ..
●
●
●
Guest
Jul 29, 2022
0
179
1
Radicals
Simplify sqrt(3*324000).
●
Guest
Jul 29, 2022
0
127
0
Algebra
Find the unique pair of real numbers (x,y) satisfying
(3x^2 + 6x + 5)(2y^2 + 8y + 10) = 4.
Guest
Jul 29, 2022
0
136
0
linear inequality
Find a linear inequality with the following solution set. Each grid line represents one unit.
(Give your answer in "standard form" ax + by + c ≥ 0 or ax + by + c > 0 where a, b and c are integers with
read more ..
Guest
Jul 29, 2022
0
307
1
algebra
If I give my brother 5 dollars, then we will have the same amount of money. If instead, he gives me 12 dollars, then I'll have twice as much money as he will have. How much money does my brother currently have (in dollars)?
●
Guest
Jul 29, 2022
0
137
0
positive integers
If a, b, and c are positive integers satisfying ab + c = bc + a = 13 and ac + b = 41, what is the value of a + b + c?
Guest
Jul 29, 2022
0
256
1
Dakota randomly selected three different integers $1$ through $6.$ What is the probability that the three numbers selected could be the side
Dakota randomly selected three different integers 1 through 6. What is the probability that the three numbers selected could be the sides of a triangle? Express your answer as a common fraction.
●
Guest
Jul 29, 2022
0
193
1
geometry
Two perpendicular chords AB and CD intersect at P. If PA = 4, PB = 10, and CD = 13, calculate the length of P to the center of the circle
●
Guest
Jul 29, 2022
0
142
0
Isosceles triangle
The lengths of the sides of isosceles triangle ABC are 3x + 62, 7x + 30, and 5x + 60 feet. What is the least possible number of feet in the perimeter of ABC?
Guest
Jul 29, 2022
0
323
2
A regular tetrahedron is a pyramid with four faces, each of which is an equilateral triangle. Let $ABCD$ be a regular tetrahedron and let $
A regular tetrahedron is a pyramid with four faces, each of which is an equilateral triangle.
Let ABCD be a regular tetrahedron and let P be the unique point equidistant from points A,B,C,D. Extend line AP to hit face BCD at point Q. What is
read more ..
●
●
Guest
Jul 29, 2022
0
210
1
complex numbers
Let z and w be complex numbers such that |z| = 1, |w| = 7, and |5z + w| = 11. Find |3z + 4w|.
●
Guest
Jul 29, 2022
0
169
1
Inequality
Jeri finds a pile of money with at least $200. If she puts $60 of the pile in her left pocket, gives away 1/3 of the rest of the pile, and then puts the rest in her right pocket, she'll have more money than if she instead gave away $200 of the original
read more ..
●
Guest
Jul 29, 2022
+1
209
4
+44
precalc, heeeeellp
In triangle ABC, and M is the midpoint of If then what is ?
●
●
●
●
brainiac
Jul 29, 2022
0
241
1
Algebra
In Olympic diving, there are seven judges who rate the performance of each dive on a scale from 0 to 10, using half-point increments, where 0 is a failed attempt and 10 is excellent. After each of the seven judges has scored the dive, the
read more ..
●
Guest
Jul 29, 2022
0
204
1
quadratic
Let a and b be the roots of the quadratic 2x^2 - 8x + 7 = x^2 - 5x + 3. Compute a^3*b + a*b^3.
●
Guest
Jul 29, 2022
0
140
0
quadratic
The quadratic equation Ax^2 + Bx + C = 0 factors into linear factors with integer coefficients. Prove that the quadratic Ax^2 + 2Bx + 4C also factors into linear factors with integer coefficients. How do do the roots of Ax^2 + 2Bx + 4C = 0 relate
read more ..
Guest
Jul 29, 2022
0
117
0
plz help
For how many integers x do we have 1/4 < x/5 < 13/2?
Guest
Jul 29, 2022
0
184
1
John has 73 bags each of which contains a quarter, a dime, a nickel, and a penny. He takes these bags to the bank and exchanges all the mone
John has 73 bags each of which contains a quarter, a dime, a nickel, and a penny. He takes these bags to the bank and exchanges all the money for some number of dollar bills, dimes, and pennies. If the number of pennies John gets after exchanging the money
read more ..
●
Guest
Jul 29, 2022
0
232
2
Algebra
Suppose that for some a,b,c we have a + b + c = 1, ab + ac + bc = abc = -1. What is a^3 + b^3 + c^3?
●
●
Guest
Jul 29, 2022
0
159
1
Polynomials
Let $f(x) = x^4-3x^2 + 2$ and $g(x) = 2x^4 - 6x^2 + 2x -1$. Let $a$ be a constant. What is the largest possible degree of $f(x) + a\cdot g(x)$?
●
Guest
Jul 29, 2022
«
latest
9235
9234
..
8509
8508
8507
8506
8505
..
2
1
»
Post New Question
1 Online Users
Top Users
+128579
CPhill
moderator
+118608
Melody
moderator
+33616
Alan
moderator
+14927
asinus
moderator
+9589
MaxWong
+3144
admin
administrator
+2440
GingerAle
+1791
tomtom
+1679
wiseowl
+1592
bader
+1145
parmen
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.