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
230706 Questions
0
314
1
coordinates
Find the value of a so that the points A(6, 2a) and B(-a, -2) lie on a line having slope 7.
●
Guest
Jul 22, 2021
0
320
1
Precalc
In triangle XYZ, we have angle X = 120, tan Z = 3. What is cos Z? Answer with an exact number.
●
Guest
Jul 22, 2021
0
427
1
Algebra
If m is a real number such that m^2 + 1 = 3m, find the value of the expression below.
(m^5 + 2m^3 - 9m + 27)/(m^2 + 1)
●
Guest
Jul 22, 2021
0
461
3
+55
Help Please!
In the SuperLottery, three balls are drawn (at random) from ten white balls numbered from $1$ to $10$, and one SuperBall is drawn (at random) from ten red balls numbered from $11$ to $20$. When you buy a ticket, you choose three numbers from $1$ to $10,$
read more ..
●
●
●
BigBoiChungus
Jul 22, 2021
0
198
0
help
Consider the function\[ f(x) = \begin{cases} ax^2 & \text{if } x \geq a,\\ ax +2a& \text{if } x
Guest
Jul 22, 2021
0
312
1
Geometric Sequences
We have two geometric sequences of positive real numbers:
6,a,b and a,b,1296
Solve for a
ElectricPavlov
●
Guest
Jul 22, 2021
0
211
0
polynomial division
https://web2.0calc.com/questions/find-a-polynomial-f-x-of-degree-5-such-that-both_2
Guest
Jul 22, 2021
0
359
1
help plz
Two parabolas are the graphs of the equations y= 2x^2 - 7x + 1 and y = 8x^2 - 25x + 13. Give all points where they intersect. List the points in order of increasing x-coordinate, separated by semicolons.
●
Guest
Jul 22, 2021
0
254
1
Sequence
If the 10th term of a harmonic progression is 21 and the 21st term of the same harmonic progression is -10, then find the 210th term.
●
Guest
Jul 22, 2021
0
461
1
Find a polynomial $f(x)$ of degree $5$ such that both of these properties hold: $\bullet$ $f(x)$ is divisible by $x^3$. $\bullet$ $f(x)+2$
Find a polynomial of degree such that both of these properties hold:
f(x) is divisible by x^3.
f(x)+2 is divisible by (x+1)^3.
Write your answer in expanded form (that is, do not factor f(x)).
●
Guest
Jul 22, 2021
0
393
2
+55
Help Please!
In the SuperLottery, three balls are drawn (at random) from ten white balls numbered from 1 to 10, and one SuperBall is drawn (at random) from ten red balls numbered from 11 to 20. When you buy a ticket, you choose three numbers from 1 to
read more ..
●
●
BigBoiChungus
Jul 22, 2021
0
365
2
Geometry
D is on side AC of Triangle ABC. We know [ABC] = 120, AD = 8, DC = 3. What is [ABD]?
●
●
Guest
Jul 22, 2021
0
212
0
Rhombus
ABCD is a rhombus. If angle A is 129 degrees and the perimeter of ABCD is 60, then find the length of each diagonal.
Guest
Jul 22, 2021
0
334
1
Integer solutions
Find the number of solutions in positive integers of the equation 3x+5y=1008.
●
Guest
Jul 22, 2021
0
198
0
Inequality
Let x be a real number such that x^2+7x+12 <= 0. Find the largest possible value of x^2 - 8x + 16.
Guest
Jul 22, 2021
0
182
0
Help with inequality
Find all x that satisfy the inequality (2x+10)(x+3)<(3x+9)(x-8) . Express your answer in interval notation.
Guest
Jul 22, 2021
0
374
1
+100
help
Catherine rolls a 6-sided die five times, and the product of her rolls is 300. How many different sequences of rolls could there have been? (The order of the rolls matters.)
●
Wsai12
Jul 22, 2021
0
247
1
Roots
x^2 + bx + b + 3 = 0 has roots of the form x = (-b +/- sqrt(7))/2, where b > 0. Find b.
●
Guest
Jul 22, 2021
0
407
3
+89
How many real roots does the function 12x^2 + 9 = -6x have?
How many real roots does the function 12x^2 + 9 = -6x have?
●
●
●
justinwh333
Jul 22, 2021
0
315
2
Domain
If h(x) is a function whose domain is [-8,8], and g(x)=h(2x^2), then the domain of g(x) is an interval of what width?
●
●
Guest
Jul 22, 2021
0
374
2
Digit problem
The five-digit number $\overline{a679b}$ is divisible by 72. Find the digits a and b.
●
●
Guest
Jul 22, 2021
+2
357
1
+52
halpppp
Determine the number of ways to arrange the letters of the word COMBINATION.
there are 2 I's and 2 N's
●
PiggyEthyn
Jul 22, 2021
0
300
1
Domain
The domain of the equation y = 3x/(x^2 - 5x - 4) is the set of all real numbers with the exception of the values x = A and x = B. What is A + B?
●
Guest
Jul 22, 2021
0
237
1
Help
A curve is described parametrically by \[(x,y) = (2 \cos t - \sin t, 4 \sin t).\]The graph of the curve can be expressed in the form \[ax^2 + bxy + cy^2 = 1.\]Enter the ordered triple $(a,b,c).$
●
Guest
Jul 22, 2021
0
330
1
Absolute value
Find all x such that 5 = |x - 2| + |x - 7| - |x - 8|.
●
Guest
Jul 22, 2021
«
latest
9227
9226
..
7878
7877
7876
7875
7874
..
2
1
»
Post New Question
3 Online Users
Top Users
+128475
CPhill
moderator
+118609
Melody
moderator
+33616
Alan
moderator
+14921
asinus
moderator
+9519
MaxWong
+3144
admin
administrator
+2440
GingerAle
+1791
tomtom
+1679
wiseowl
+1553
bader
+1117
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.