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
230606 Questions
0
450
3
Question about proof
Let be a positive integer.
(a) Prove that
by counting the number of ordered triples of positive integers, where in two different ways.
(b) Prove that
by counting the number of subsets
read more ..
●
●
●
Guest
Jul 20, 2021
0
1013
3
binomial question
(a) Simplify
(b) For some positive integer the expansion of has three consecutive coefficients that satisfy What must be?
Please help! Sorry to have a repost but on the
read more ..
●
●
●
Guest
Jul 20, 2021
0
372
1
Math
Find the greatest common factor of 5! and 6!. (Reminder: If is a positive integer, then stands for the product .)
●
Guest
Jul 20, 2021
0
455
1
Find the positive difference between the solutions to the equation 6t^2 + 30 = 41t
Find the positive difference between the solutions to the equation 6t^2 + 30 = 41t
●
Guest
Jul 20, 2021
0
204
0
please help
Find the positive difference between the solutions to the equation 6t^2 + 30 = 41t
Guest
Jul 20, 2021
0
221
0
please help
Find the positive difference between the solutions to the equation 6t^2 + 30 = 41t
Guest
Jul 20, 2021
0
357
1
The digits $1,2,3,4$ and $5$ can be arranged to form many different $5$-digit positive integers with five distinct digits. In how many such
The digits $1,2,3,4$ and $5$ can be arranged to form many different $5$-digit positive integers with five distinct digits. In how many such integers is the digit $1$ to the left of the digit $2$? (The digits 1 and 2 do not have to be next to each other.)
read more ..
●
Guest
Jul 20, 2021
0
259
1
Help needed.
Expand the product \left(x-2\right)^2\left(x+2\right)^2. What is the product of the nonzero coefficients of the resulting expression, including the constant term?
●
Guest
Jul 20, 2021
0
212
0
function
Let
f(x) = -x + 3 if x <= 0
f(x) = 2x + 15 if x > 0
read more ..
Guest
Jul 20, 2021
0
347
1
help algebra
Find the value of x if 9^x - 6*3^x - 27 = 0
●
Guest
Jul 20, 2021
0
403
2
+89
probability
is it 33%?
●
●
justinwh333
Jul 20, 2021
0
392
1
help please
The expression 3y^2 - y - 24 can be written as (3y+a)(y+b) where a and b are integers. What is a-b ?
●
Guest
Jul 20, 2021
0
456
1
HELP!!
A surveyor needs to find the distance BC across a lake as part of a project to build a bridge. The distance from point A to point B is 325 feet. The measurement of angle A is 42° and the measurement of angel B is 110°. What is the distance BC across the
read more ..
●
Guest
Jul 20, 2021
0
562
1
HELP ASAP!!
You are in a hot air balloon that is 600 feet above the ground where you can see your friend. If the angle from your line of sight to your friend is 20°, how far is he from the point on the ground below the hot air balloon to the nearest foot?
read more ..
●
Guest
Jul 20, 2021
0
621
2
Which is one way that analyzing ice benefits scientist who study ancient climates?
Which is one way that analyzing ice benefits scientist who study ancient climates?
A) scientists can analyze frozen volcanic dust To help predict eruption's.
B) scientist can study the layers of ice cores to gather information
read more ..
●
●
Guest
Jul 20, 2021
0
740
1
help
Joe will randomly select two letters from the word CAMP, four letters from the word HERBS, and three letters from the word GLOW. What is the probability that he will have all of the letters from the word PROBLEM? Express your answer as a common fraction.
read more ..
●
Guest
Jul 20, 2021
0
374
1
+4
help urgent
hi everyone, i need help on this problem
(a) Simplify
read more ..
●
userunknown5376
Jul 20, 2021
+1
421
2
+52
help
16c4-16c12
im stuck
●
●
PiggyEthyn
Jul 20, 2021
0
366
1
Coordinates
The equation of an ellipse is x^2+y^2/4=1. The equation of a line is y=3x+b. For what values of b is the line tangent to the ellipse?
●
Guest
Jul 20, 2021
0
210
0
plz help
x^2 + bx + b + 3 = 0 has roots of the form x = (-b +/- sqrt(7))/2, where b > 0. Find b.
Guest
Jul 20, 2021
+1
428
5
+63
Trignometry Help
Consider the diagram below, with , as well as and :
read more ..
●
●
●
●
●
elloooo
Jul 20, 2021
0
209
0
Inequalities
Let a, b, c, and d be real numbers such that a > b and c > d. Which of the below statements are true?
(A) a + c > b + d.
read more ..
Guest
Jul 20, 2021
0
218
0
help quadratic
What is the minimum value of the expression 2x^2 + y^2 + 8x - 24y + 62 for real x and y?
Guest
Jul 20, 2021
0
282
1
1/4
1/4 x 8
●
Guest
Jul 20, 2021
«
latest
9223
9222
..
7875
7874
7873
7872
7871
..
2
1
»
Post New Question
3 Online Users
Top Users
+128474
CPhill
moderator
+118609
Melody
moderator
+33615
Alan
moderator
+14915
asinus
moderator
+9519
MaxWong
+3144
admin
administrator
+2440
GingerAle
+1791
tomtom
+1484
bader
+1085
parmen
+1032
kittykat
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.